@@janjeikobu5163 100 mL water, 15mL starch, 10mL vinegar, 10mL glycerin. Just multiply/divide all these numbers by the same amount for different quantities of plastic.
Hi, thank you so much for this video, I saw your recent video on the bio plastic bag with completely no air bubbles, was wondering if there was a way to make a bio plastic with this recipe but with little to no air bubbles? Thank you!
Hi, may I ask how you achieved that kind of consistency for your cornstarch bioplastic? I'm also researching cornstarch-based bioplastics, and I tried doing the same, but the results weren't great. Since I'm limited with the materials such as a molder, I tried using wax paper instead to place my mixture. However, cracks keep appearing☹
Cracks are usually caused by insufficient glycerin and/or water. If it still cracks, maybe try duct taping the waxed paper to a piece of cardboard so it doesn't shift during the drying period.
@@gilchristacquah2368Hi, unfortunately, it did not work for me :(( Perhaps my method of doing it was incomplete in some way. If you're trying to do it, I suggest you try using a molder to ensure better outcomes
Awesome video! I just wanted to know why you used different vinegar, glycerin, and water measures than in your casava recipe. Can this videos measurements be universal and replaced with any starch?
A glycerol substitute you might have at home is honey. Depending on the viscosity of your honey, you might have to increase the amount (try doubling it, for example). Regarding the gelatin, I've never tried that; if you do, let us know if it works!
hi, I tried your recipe and I got a beautiful result, which dried in less than 24 hours!!! but every time all the sides come out and turn up and curl. Can you tell me why and if there is a solution?
@@elka4243 it takes you 10min continuous... if you have added more and made the solution saturated, then it will take longer time... that's why keep adding step wise rather than a huge amount initially...
Looks good! What other fruits/vegetables can I use instead of potato or cornstarch? We're trying to find a fruit that hasn't been turned into bioplastic yet. We're hoping that we can find a fruit that is similar to the needed content with the potato or corn starch content. Thanks!
Hello, what do you think should I add to the mixture to make the plastic hard enough to make a straw? I'm planning to make a bioplastic drinking straw. Thank you!
Hi Giestas, Another Question, So I’ve tried out your recipe and i found many cracks appearing in just a single day, so I modified the recipe to add more water and glycerin and did 2 batches, but i still found cracks. I looked through some tutorials and i found most people layering the plastic paper thin, however my plastic is 5mm thick, could this be the problem I’m facing? Thanks in Advance
5mm should be fine. Most often cracks appear when there's something wrong with the amount or quality of glycerin. If you need to change the recipe, maybe look at these tests first: th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
@@giestas Hi Giestas! Thanks for the Quick and helpful response, just like you predicted, thicker batches have cracked, but the paper / polythene thin batches are still perfect, so yeah thanks for all help and tip. I’m actually doing this for my grade 8 Science Project, Just letting you know :) Cheers
This recipe has starch as the main ingredient, which is a powdery white substance like flower; it doesn't work with other solid organic matter like fruit.
Good day again, sir! I have another question. Is it okay if I use oil to cover the metal tray? Because the mixture is sticking to the tray and I can't peel it out. Does it have the same results with using a silicone mould?
@@giestas tested a recipe I had and think that dehydration with temp doesn’t work. The whole mix crazed. Think maybe ambient fan will might speed up the process with no heat. Desperate to get a sheet made.
hi! we're planning to do a capstone project about bioplastics, would it be possible if we use the starch extracted from mung beans? (it's a common household ingredient in my country) Also, what specific steps do I need to do if I want my bioplastic to be transparent and texture similar to non biodegradable plastics?(we are planning to make a plastic bag where u can put things out of this bioplastic)
@@mc.shn_9472 hi hii, i'm assuming filipino ka rin? hehe pero sadly bago pa man namin matry kung gagana nga, nareject na siya title proposal palang kasi hindi raw cost-effective :((
Hi, thank you for making such good explainatory video :) I was wondering what was the size of the mold you were using in this video ? Just trying to figure out proportions
When you see a recipe expressed in 'parts' that means you are looking at the recipe 'ratio', which is supposed to help you scale the quantity up and down. Example: let's say you don't have measuring spoons at home and all you have is a small coffee cup. If the ratio called for 3:1:1:1, that would be 3 cups of water, 1 cup of starch, 1 cup of vinegar, 1 cup of glycerin. Then, let's say you wanted a bioplastic that was double the size. You can use a coffee cup that is double the size, or, following the same ratio 3:1:1:1 all you need to do is double the numbers, so that would be: 6 cups of water, 2 cups of starch, 2 cups of vinegar, 2 cup of glycerin.
Hello, I am currently working in a group where we are making blocks from this kind of method. We discovered however that with the eveaporation of the water it is hard to have it keep shape jn a mold. Is their someway to fix this or another material we should use?
@@giestas thank you for the reply. I have another question regarding this. If we were to use coffee grounds, when in the process would we use it. Would it be the boiling part? Also what would the coffee grounds do for the product. Again, thank you for the response!
@@DaPug2176 you can add them after boiling before drying. An inert ingredient helps to structure the material, like when sand (inert material) is added to cement (binder) to make concrete.
@@giestasHello, so our group has done a couple of trials, and when we let it dry out of the mold, the top layer of our block is rough and hard, but all of the block below the top is soft and squishy. Do you possibly know why this is and how we may fix this? Thank you again
Hello! We have a capstone research and it is all about creating bioplastics using strach extracted from air potatoes. I would like to ask you for the specific measurements that you used in the beginning?
I've seen some applications of pectin as a waterproofing agent for leather, but I haven't found a recipe for a homemade version. You can use lemon juice yes. If possible, filter it with a paper coffee filter; but even then it might still take plenty more time for the bioplastic to dry.
@@giestas thanks for your reply! another quick question, what would you recommend on adding or reducing from the mixture to accelerate the drying without an oven?
Thank you for this video, is it fine if im going to mix starch from 2 different subjects??? like potato and cassava starch??? or taro and cassava starch?
Good day! May I ask if can we achieve the same results with different ingredients, like in our research we used citric acid instead of vinegar and the starch used was extracted from a jackfruit seed
Citric acid works, yes! About the jackfruit I can't say because I didn't even know what it is, I had to google it. If this recipe doesn't work with jackfruit starch, maybe try the cassava starch recipe: th-cam.com/video/x8BVDnFWkIg/w-d-xo.html
Hi, may I ask what could have been the reason why there was a red spot that appeared during the fourth day in the cornstarch bioplastic mixture? The red spot got bigger on the eighth day. Also, the mixtures of bioplastic made with cornstarch and potato starch have not yet really formed well because they have not hardened yet. What does this mean?
It might take a long while for all the water to evaporate from the bioplastic, so if it hasn't "hardened" after 8 days, wait a bit longer and check if it's gradually drying. The red spot is a mystery :/
With a dehydrator on high temperature (70ºC) you can dry it fast but it introduces a lot of small bubbles into the bioplastic. On low temperature (35ºC) it's quicker than air drying, but it might still take you something like three days.
@@giestas This reacts a lot like epoxy resin and two way to remove bubbles would be to put your mold in air pressure pot that suppresses the air bubbles or the opposite that would be to use a vacuum pot that would pull the air out your starches. I know that the pressure pots can go for days if needed but I'm not that sure you could go that long in time with a vacuum pot.
I HAVE A QUESTION (Research Purposes): Why did my cornstarch-based bioplastic develop mold while drying? I recently attempted to make this type of bioplastic, but after two days, it became moldy. Should I cover the bioplastic while it dries or no?
Hello! Can I ask you something for our research project? We made corn-based bioplastic and we dried it up using the oven. We followed your measurements in your youtube video however; if we put it in the open for an hour at 125C, it forms cracks. How can we fix this please?
Hi I would like to ask also, in our research we are going to use mango peel to make bioplastic, will it work if we are going to use the same ingredients as you use and mix it with mango peel? And how many days it take for drying?
If you use the recipe in the video and add the mango peel already dried, then the peel will be an inert material, so it shouldn't change the drying time.
@@giestas actually my dissertation topic is based on biocomposites for food packaging....I am confused which starch I should pick to lay down a food packaging film ...different research paper reports different results
Sir, why is my corn starch based bioplastic is still soft and the edges are crumpled when i rrmoved it from petri dish after drying? I dried mine for 6 hours in dehydrator at 45°C ;(
Even with a dehydrator, 6 hours is not enough, you'll probably need at least 24h. You can raise the temperature to get shorter times, but that'll introduce a lot of bubbles in the bioplastic.
i owe u my research paper, thank you so much for this you are a life saver
dude what is the universal ratio for the ingredients? like for every tablespoon of cornstarch is every tablespoon of everything else? need help lol
@@janjeikobu5163 100 mL water, 15mL starch, 10mL vinegar, 10mL glycerin. Just multiply/divide all these numbers by the same amount for different quantities of plastic.
what is your research paper all about?
We’re u able to produce the bioplastic film
@@nata5212i cant make it💀 if anyone here did pls help
The quality of this video is top notch! Really shows how hard you must have had to work on this. Thank you so much for putting this out💜💜😭
wow, this video looks so clean! it's a fascinating look, well done. also great information too
3:23 this reminds me of a rainy day and the "window has fogged up from the cold and some rain drops are on the window
Hi, thank you so much for this video, I saw your recent video on the bio plastic bag with completely no air bubbles, was wondering if there was a way to make a bio plastic with this recipe but with little to no air bubbles? Thank you!
Do you have some advice on how to dry them properly? If so, please kindly enlighten me!
Thank you for this video! I was wondering… What is actually the function of the vinegar?
See the F.A.Q. in the description.
Loving these videos
Excellent work. All videos are fantastic. Can you please tell us the measurements of your drying pan?
I owe you our research paper tysm love u
Hi, may I ask how you achieved that kind of consistency for your cornstarch bioplastic? I'm also researching cornstarch-based bioplastics, and I tried doing the same, but the results weren't great. Since I'm limited with the materials such as a molder, I tried using wax paper instead to place my mixture. However, cracks keep appearing☹
Cracks are usually caused by insufficient glycerin and/or water. If it still cracks, maybe try duct taping the waxed paper to a piece of cardboard so it doesn't shift during the drying period.
@@giestas thank you so much for the tip! I'll try doing this! ^^
@@mono.latte07 did it work?
@@mono.latte07 were u able to produce it?
@@gilchristacquah2368Hi, unfortunately, it did not work for me :(( Perhaps my method of doing it was incomplete in some way. If you're trying to do it, I suggest you try using a molder to ensure better outcomes
Awesome video! I just wanted to know why you used different vinegar, glycerin, and water measures than in your casava recipe. Can this videos measurements be universal and replaced with any starch?
Potato and corn starches seem to interchangeable, but the others not so much, hence the different recipes.
Some people use agar agar instead of glycerol
So can i use gelatin instead?
A glycerol substitute you might have at home is honey. Depending on the viscosity of your honey, you might have to increase the amount (try doubling it, for example).
Regarding the gelatin, I've never tried that; if you do, let us know if it works!
You can check out honey as a substitute to glycerin here: th-cam.com/video/lU1RiQTmLuA/w-d-xo.html
hi, I tried your recipe and I got a beautiful result, which dried in less than 24 hours!!! but every time all the sides come out and turn up and curl. Can you tell me why and if there is a solution?
A bit is normal, also happens in my samples.
Did you follow exactly recipe? Did it dry in room temperature
Hey how many time did it take for you to mix it in the hot water ?
@@elka4243 it takes you 10min continuous... if you have added more and made the solution saturated, then it will take longer time... that's why keep adding step wise rather than a huge amount initially...
Hi, such a great video
Just want to clarify first, is the bioplastic made waterproof or can support things such as groceries or not yet?
I haven't made strength tests yet. About the water resistance, I made some experiments: th-cam.com/video/DGp1-hdExMY/w-d-xo.html
Keep it going we need more
Hi, I would like to know how long does the plastic takes to decompose, thank you.
Here: th-cam.com/video/oub-YroMsR0/w-d-xo.html
Looks good! What other fruits/vegetables can I use instead of potato or cornstarch? We're trying to find a fruit that hasn't been turned into bioplastic yet. We're hoping that we can find a fruit that is similar to the needed content with the potato or corn starch content. Thanks!
I've only tried these ones and cassava, but I'm sure there are many more options out there to be explored...
Hii is it necessary to add gelatin unto the mixture to create bio plastic? By the way Im using corn starch and corn husk
Hello, what do you think should I add to the mixture to make the plastic hard enough to make a straw? I'm planning to make a bioplastic drinking straw. Thank you!
I wish I could tell you, I haven't managed to make a rigid sample with a specific shape.
This is awesome. But may I know it's Edible????
Judging by the ingredients I would guess so, but since I'm not sure, I'd rather not say.
@@giestas thank u so much for rply 🙏
Hi, thank you for this video. I am experimenting with bioplastics with potato starch. It won't seal. Is there any way to fix it?
How to check which starch based film effective and what are the test to check the perfect bio plastic quality
Thx for the vid. Quick question: is there a way to fasten the hardening process?
Here: th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Can I replace vinegar by lemon juice
You can do it without, as in this case: th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Hi Giestas, Another Question, So I’ve tried out your recipe and i found many cracks appearing in just a single day, so I modified the recipe to add more water and glycerin and did 2 batches, but i still found cracks. I looked through some tutorials and i found most people layering the plastic paper thin, however my plastic is 5mm thick, could this be the problem I’m facing? Thanks in Advance
5mm should be fine. Most often cracks appear when there's something wrong with the amount or quality of glycerin. If you need to change the recipe, maybe look at these tests first: th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
@@giestas Hi Giestas! Thanks for the Quick and helpful response, just like you predicted, thicker batches have cracked, but the paper / polythene thin batches are still perfect, so yeah thanks for all help and tip. I’m actually doing this for my grade 8 Science Project, Just letting you know :) Cheers
@@neelagandanu awesome, go for it!
Can i make bioplastic from papaya with this same procedure? Plz reply
This recipe has starch as the main ingredient, which is a powdery white substance like flower; it doesn't work with other solid organic matter like fruit.
Why it's stock up when I putted in the tray and cracked when I dried it under the heat of the sun?
Maybe too little glycerin?
@@giestas thank you❤️
Good day again, sir! I have another question. Is it okay if I use oil to cover the metal tray? Because the mixture is sticking to the tray and I can't peel it out. Does it have the same results with using a silicone mould?
Good question, but I can't say, I never tried using oil.
how about using baking paper?
Is the corn naturally sticky when being touched? Also, why does ours break so easily? Do we need to add more glycerin? Thank you!
Take a look at these samples and see if it matches one of them: th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
Does keeping it in oven get it ready faster and how much time is needed
At lower temperatures like 70ºC (158ºF) yes, ideally with fan on. More than that and the oven will introduce a lot of bubbles in the bioplastic.
Can this solution be dehydrated to speed up the drying process? Secondly how do the dried sheets react to warming? Do they stretch?
1 yes. 2 don't know, still have to make some tests on temperature.
@@giestas tested a recipe I had and think that dehydration with temp doesn’t work. The whole mix crazed. Think maybe ambient fan will might speed up the process with no heat. Desperate to get a sheet made.
@@davidktd a dehydrator is perfect. If you don't mind bubbles, you can also use the oven. Look for the oven drying video in the channel.
@@giestas gonna try your recipes. Next and use the dehydrator fan to speed up drying. Many thanks.
@@giestas I’ve seen recipes with soy lecithin. What’s the purpose of that? It’s an emulsifier. Have you tried?
hi! we're planning to do a capstone project about bioplastics, would it be possible if we use the starch extracted from mung beans? (it's a common household ingredient in my country)
Also, what specific steps do I need to do if I want my bioplastic to be transparent and texture similar to non biodegradable plastics?(we are planning to make a plastic bag where u can put things out of this bioplastic)
I haven't tried mung bean starch yet, you can start by trying this recipe or the recipe for cassava starch and see if either works.
@@giestas will I get the same consistency if I use starch?
did the mung bean work?
@@mc.shn_9472 hi hii, i'm assuming filipino ka rin? hehe pero sadly bago pa man namin matry kung gagana nga, nareject na siya title proposal palang kasi hindi raw cost-effective :((
Is this biodegradable under natural conditions unlike PLA?
Here: th-cam.com/video/oub-YroMsR0/w-d-xo.html
Hello, is the glycerin used as a plasticizer? Would we obtain a more brittle plastic if we skipped the glycerin? Thanks
Yes, you can see the effect of glycerin in this video: th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
how hot should the heater be?
Enough for the water to simmer.
At what stage can we add food colour?
Here is a video on the colored version: th-cam.com/video/4LY9Pvwy7yI/w-d-xo.html
CAN WE DO IT WITH CORNFLOUR INSTEAD OR USING CORN STARCH NECESSARY?
Amazing video! Did you have to wait for a specific temperature before heating your mixture?
Not really, as long as it's simmering, it'll work.
can i ironpress it to stick them together to create a bag?
Not really, it doesn't behave like a thermoplastic.
Hi, thank you for making such good explainatory video :) I was wondering what was the size of the mold you were using in this video ? Just trying to figure out proportions
or the average thickness of the protduct inside the mold
200 x 150 x 0.5 mm 2:46
Will the bioplastic then be waterproof or will it revert back into a gel if exposed to water?
Here is a test on that: th-cam.com/video/DGp1-hdExMY/w-d-xo.html
Can we add gelatin after
Hi i would like to know what u mean by parts is it spoon or cups thank u
When you see a recipe expressed in 'parts' that means you are looking at the recipe 'ratio', which is supposed to help you scale the quantity up and down.
Example: let's say you don't have measuring spoons at home and all you have is a small coffee cup. If the ratio called for 3:1:1:1, that would be 3 cups of water, 1 cup of starch, 1 cup of vinegar, 1 cup of glycerin.
Then, let's say you wanted a bioplastic that was double the size. You can use a coffee cup that is double the size, or, following the same ratio 3:1:1:1 all you need to do is double the numbers, so that would be: 6 cups of water, 2 cups of starch, 2 cups of vinegar, 2 cup of glycerin.
How about the measures using ml?
This video is very nice 👍👍
I have a dought..
Is this bioplastic is suitable for packaging the liquid items?
You can see a test in this video: th-cam.com/video/DGp1-hdExMY/w-d-xo.html
What factors might contribute to mold growth in cornstarch-based bioplastic, aside from the fact that it is a food?
Hello, I am currently working in a group where we are making blocks from this kind of method. We discovered however that with the eveaporation of the water it is hard to have it keep shape jn a mold. Is their someway to fix this or another material we should use?
You probably need to add an inert material, like spent coffee grounds for example.
@@giestas thank you for the reply. I have another question regarding this. If we were to use coffee grounds, when in the process would we use it. Would it be the boiling part? Also what would the coffee grounds do for the product. Again, thank you for the response!
@@DaPug2176 you can add them after boiling before drying. An inert ingredient helps to structure the material, like when sand (inert material) is added to cement (binder) to make concrete.
@@giestas thank you so much. I will make sure to try this.
@@giestasHello, so our group has done a couple of trials, and when we let it dry out of the mold, the top layer of our block is rough and hard, but all of the block below the top is soft and squishy. Do you possibly know why this is and how we may fix this? Thank you again
Is it highly flammable?
Good opportunity nice 🙏
But which starch is best
Potato. Ya. Corn
If you need the surface to be smooth, corn starch might be a better option.
Hi, my oven can go as low as 20 Celcius (but it has no fan), what is the most recommended temperature to dry it?
Most dehydrators go between 30ºC and 80ºC, so maybe try something in the middle like 50ºC?
@@giestas i am going to try 70 Celcius first, because i need it to be finished a bit faster, i am watching the oven for each hour
Is they use sea water for steam the water path ? Which type of water u used for stemed the water ?
I just used regular tap water during the whole process.
Hello! We have a capstone research and it is all about creating bioplastics using strach extracted from air potatoes. I would like to ask you for the specific measurements that you used in the beginning?
I want to be enlightened regarding the specific ratio of the following ingredients
It is really helpful indeed,
May I ask if I can use vegetable glycerin?
Hope you'll notice me, i really need your help
Thank you so much 😔💓
I have to confess I didn't know vegetable glycerin existed until now :)
Yes!!!!! Already did my research regarding that.
Is this plastics are stretchable like polyethylene ?
Maybe what you have in mind is more like this: th-cam.com/video/Us9XAzjRNzE/w-d-xo.html
great video!
have you ever tried to use pectin to waterproof the plastic?
also, do you think that lemon juice can make a substance for the vinegar?
I've seen some applications of pectin as a waterproofing agent for leather, but I haven't found a recipe for a homemade version.
You can use lemon juice yes. If possible, filter it with a paper coffee filter; but even then it might still take plenty more time for the bioplastic to dry.
@@giestas thanks for your reply!
another quick question, what would you recommend on adding or reducing from the mixture to accelerate the drying without an oven?
The less glycerin you had, the faster it'll dry (but the more rigid the plastic will be)
Hi, I was wondering if any of the plastics had a strong scent to them. Or were they unscented?
After drying, they're pretty much unscented.
hi, do you think it's possible to make a bioplastic envelope using those ingredients and measurements?
Good question, it might be possible, if you have a way to "glue" it into shape.
@@giestas thank youu, one last question, does the finished product have some changes after a few weeks or months?
Hi! I was wondering for our capstone, if i added pectin to the mix how much should i add?
Just a guess: maybe start with 2% pectin?
@@giestas thanks! 😊
Thank you for this video, is it fine if im going to mix starch from 2 different subjects??? like potato and cassava starch??? or taro and cassava starch?
Some starches require more water than others, but you can definitely mix them, yes!
How do you dry it? Like in a cold or hot place or just dry it in a table for a couple of days?
Check the FAQ in the description.
Thank you very much, we successfully made thiss bioplastic with the recipes@@giestas
Hi. How did you dry your film? Our bioplastic keeps getting white molds when drying.
These samples were dried at room temperature, but if you live in a high humidity environment it might be more difficult.
Good day! May I ask if can we achieve the same results with different ingredients, like in our research we used citric acid instead of vinegar and the starch used was extracted from a jackfruit seed
Citric acid works, yes! About the jackfruit I can't say because I didn't even know what it is, I had to google it. If this recipe doesn't work with jackfruit starch, maybe try the cassava starch recipe: th-cam.com/video/x8BVDnFWkIg/w-d-xo.html
Hi, may I ask what could have been the reason why there was a red spot that appeared during the fourth day in the cornstarch bioplastic mixture? The red spot got bigger on the eighth day.
Also, the mixtures of bioplastic made with cornstarch and potato starch have not yet really formed well because they have not hardened yet. What does this mean?
It might take a long while for all the water to evaporate from the bioplastic, so if it hasn't "hardened" after 8 days, wait a bit longer and check if it's gradually drying.
The red spot is a mystery :/
@@giestasHi, can you dry it quicker? Like microwave or oven? Thank you! This is really usefull! 😁🤗
@@nikola.acimovic the latest video is about drying in the oven: th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Hello! Is there any ways to speed up the drying? if needed dehydrator, how many degrees is needed, and how many hours?
With a dehydrator on high temperature (70ºC) you can dry it fast but it introduces a lot of small bubbles into the bioplastic. On low temperature (35ºC) it's quicker than air drying, but it might still take you something like three days.
Can i use oven instead of dehydrator?
If it goes down to those low temperatures yes; if it has a fan option, even better.
@@giestas This reacts a lot like epoxy resin and two way to remove bubbles would be to put your mold in air pressure pot that suppresses the air bubbles or the opposite that would be to use a vacuum pot that would pull the air out your starches. I know that the pressure pots can go for days if needed but I'm not that sure you could go that long in time with a vacuum pot.
@@giestas my oven can go as low as 20 Celcius (but it has no fan), what is the most recommended temperature to dry it?
Hi! May I know if bioplastics harden? We are currently making a bioplastic brick made from the almost the same ingredients you utilized. Thank you!
It'll be hard if you don't introduce the plasticizer (in this case, glycerine). The trouble is it'll deform heavily while drying.
@@giestas will it not harden though despite the presence of glycerin? By the way, thank you so much for your response!
@@wilbertgutierrez2267 Glycerine makes it flexible, but I've only tried making thin films, so I can't be of much help about solid blocks like bricks.
The real question is... can this bio-degrade or composte under bromal conditions or does it require industrial conditions?
What is the cost on making the bioplastic for the potato starch? How can I increase the production rate of this by myself?
I HAVE A QUESTION (Research Purposes):
Why did my cornstarch-based bioplastic develop mold while drying? I recently attempted to make this type of bioplastic, but after two days, it became moldy. Should I cover the bioplastic while it dries or no?
Can we kept it in refrigerator for fast result of getting hard
The refrigerator won't do much, but the oven may help: th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Thankyou ❤
Is it water resist?
Here: th-cam.com/video/DGp1-hdExMY/w-d-xo.html
hey, want to ask...which type of material is best for making bioplastic? like corn cob, corn stalks, starch or cotton stalks?
Wish I could help, but from all those options, I only have experience with starch.
@@giestas thanx a lot for your quick response 🙏
Hello! Can I ask you something for our research project? We made corn-based bioplastic and we dried it up using the oven. We followed your measurements in your youtube video however; if we put it in the open for an hour at 125C, it forms cracks. How can we fix this please?
Cracks usually appear when you don't have sufficient glycerin.
i used glycerin same as the reciep😢
What is the ideal temperature and time if I use an oven?
th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Does the mixture hardens quickly of you add cold water or room temperature water to it?
What is the function of the glycerin?
It's a plasticizer. Here you can see what it looks like without glycerin: th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
Do you air dry it, or oven dry?
Check the FAQ in the description.
can u tell me the ingredients in ml plz, ty
Hi may i know will it dry within 24 hours???
I really hope to get a reply from you giestas.
Check the FAQ in the video description.
Do you think bioplastic could be cast in plaster moulds? I'm a sculpture student looking for resin substitute
Not with recipe. The water content is very high, it'll contract a lot, making the mould kind of irrelevant.
@giestas That's a shame, thank you for responding. Do you know of any recipes that don't contain so much water?
Hi I would like to ask also, in our research we are going to use mango peel to make bioplastic, will it work if we are going to use the same ingredients as you use and mix it with mango peel? And how many days it take for drying?
If you use the recipe in the video and add the mango peel already dried, then the peel will be an inert material, so it shouldn't change the drying time.
Which had more durability ?? According to you which starch will be best to create biocomposites
Difficult to say as they are very similar. Maybe the potato one is a little bit stronger, but this is a very unscientific answer :)
@@giestas have you ever worked on tapioca starch
@@alkananda6699 Yes, my first tests were with tapioca actually: th-cam.com/video/4LY9Pvwy7yI/w-d-xo.html
@@giestas actually my dissertation topic is based on biocomposites for food packaging....I am confused which starch I should pick to lay down a food packaging film ...different research paper reports different results
Is it a theoretical dissertation or do you have to actually make it?
Do I have to use the stuff in the video like the cooking part where you put a bowl above the boiling water??
is it ok to dry it using heat of sunlight? or is it better to dry ith in a room temperature with a fan on? I don't have a dehydrator
I never tested that, but I would guess it's ok to dry it in the sun.
Is there any results to your bioplastic?
How do I measure 2/3 of spoon?
A teaspoon is 1/3 of a tablespoon.
How do you prevent folds from the edges when the bioplastic is in the drying stage?
The edges always end up with a few imperfections and I cut them in the end.
@@giestas thank you so much
Sir, why is my corn starch based bioplastic is still soft and the edges are crumpled when i rrmoved it from petri dish after drying? I dried mine for 6 hours in dehydrator at 45°C ;(
Even with a dehydrator, 6 hours is not enough, you'll probably need at least 24h. You can raise the temperature to get shorter times, but that'll introduce a lot of bubbles in the bioplastic.
@@giestas hii, i already dried it for 24 hrs with 45-50°c and its all good hehe
@@giestas thank youuu
@@bamtori6937hello were u able to produce the bioplastic film pls
What is the concentration of glycerine used
In this recipe I use pure glycerine, not a solution of glycerine in water.
Hi, may I know how long it will take to degrade?
I've tested it underwater, you can see the results here: th-cam.com/video/DA6U_lJMM3w/w-d-xo.html
Do these dissolve in water? and are these edible?
th-cam.com/video/DA6U_lJMM3w/w-d-xo.html
I can replace the glycerin with something else. and both pectin and glycerin are food or pharmaceutical.... please❤
Can I use a laboratory oven (about 90 celsius) to dry it quickly?
Probably yes, but you can check the effect of different temperatures here: th-cam.com/video/XBjUPxaGcZQ/w-d-xo.html
Hi i actually wanted to make biodegradable plastic bottle and i want to know what to add to make it stiff?
Watch this video to see a more stiff example th-cam.com/video/1hDXsOrf0AY/w-d-xo.html
May i ask what type of glycerin you used?
Just regular vegetable glycerin
how should I dry it? do I need to cover it?
Hello! May I ask what type of glycerin did you use in the video? There are so many types and brands, and I don't know what to choose.
I don't have a specific brand to recommend, I just go for common vegetable glycerin.
@@giestas thank you so much!
May I ask if there are alternatives for glycerol? Can we use coconut oil instead? Or maybe even honey?
Honey can work, I have a video on some tests: th-cam.com/video/lU1RiQTmLuA/w-d-xo.html
Hello, is this water soluble??
Do we need to use glycerol and what can we use instead of it
Here: th-cam.com/video/lU1RiQTmLuA/w-d-xo.html
Should we just keep it to set
It'll dry at room temperature if you just leave it yes, if that's what you mean.
Nifty!