Homemade Bioplastic : cassava starch recipe

[@carlapalazzo7973]

Hi i noticed it is very difficult to blend the tapioca into hot water on the pot. Basically it creates little assemblements and it doesnt dissolve. What should i do?

[@nitadaniyati7858]

thanks for the video, I'll trying it someday

[@miguelc4422]

This is so cool!

[@ccm8475]

Hi! May I know where you got the measurements for each ingredients? How did you know that you should put a 4:1:1/3:1/3 ratio? Thank you!

[@giestas]

I googled a few recipes, tried them, tested changing each ingredient quantity, and got the best results with this ratio.

[@hoshi3457]

Hello! How many grams is the outcome of the bioplastic??

[@rrivera8255]

Can you like make one that is not soluble in water. Or like decrease the water solubility

[@giestas]

For this cassava starch bioplastic I don't know the answer, but I'm currently doing that kind of test for the gelatin and agar bioplastics.

[@rejoicemzumara8104]

What do you mean by "parts". Can you use teaspoon or tablespoon please? I don't understand

[@giestas]

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. 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.

[@roseannelopez544]

​@@giestashiii I have a question the tool you've used to measure the water is it tablespoon? And for fos the starch is it teaspoon?

[@gwen7819]

hello! may i ask what thepurpose of the vinegar is? is it important for it to become a bioplastic and not just a gelatin?

[@giestas]

It breaks the molecular structure of the starch, which changes into longer chains (polymer). This video might give you more info on this topic: kzbin.info/www/bejne/aXKQnX-FqtOFpac

[@kategonzales2785]

Hello! May I increase the tensile and strength of bioplastic by adding more vinegar?

[@giestas]

I tried adding more vinegar, as you can see in this video: kzbin.info/www/bejne/Z5mniaaFp8tjd7s and by hand feel I can't say the change in strength was significative. I would have to make some rigorous tests to know for sure, though.

[@ashafa360]

What can I used instead of vanigar

[@giestas]

You can try using lemon juice. I don't have an exact recipe but the quantities are not far from the original ones. It'll just take a bit longer to dry, if I remember correctly.

[@iwolfyou9972]

can i ask how much weight this can hold ? thank you

[@Han_Ryo]

Hello is it okay to add gelatin to the mixture even though we have cassava starch included?

[@giestas]

Good question but I can't say, haven't tried that yet.

[@laurelximena7712]

It is possible to make a bag with this bioplastic? Maybe with heat or sewing it?

[@giestas]

Here: kzbin.info/www/bejne/gpnCfKqAmLaHbM0

[@melinasolpaiz6994]

what effect would not adding vingar have on the plastic

[@giestas]

Not sure, this one doesn't have vinegar and looks similar: kzbin.info/www/bejne/jnPNhoOulqyWkLM

[@TheLalawitch]

Hey, I didn't understand your mesures. Can you pls help me? Thks.

[@giestas]

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.

[@arnieltorayno1114]

Can we assure that there will be no Fruit fly when we dry this bioplastic? Or molds to be form?

[@giestas]

If you keep it in a dry environment, it'll stay mold and fly free.

[@theaclairy8992]

hi, do you think using a blowtorch would eliminate the bubbles or would it ruin it? and have you found a way to speed up the drying process? a dehydrator perhaps?

[@theaclairy8992]

and i'm curious what do you use them for? is it exclusively for experimenting or do you actually have a specific use for it? sorry for the questions, i'm considering doing an assignment on this topic

[@giestas]

The dehydrator shortens the drying time to 3 days, but not a lot of people have one, so I'm looking for other ways to speed up the process. About the blowtorch, I don't know but now I'm curious, I'll have to try it out :)

[@giestas]

I had a lot of expectations for possible uses... until I started making the actual materials. Then I realized how much trial and error would be needed, and decided to share the tests.

[@ashok1goodlife]

​@@giestas Respect! Great efforts and thank you for sharing. Am working on industrialising this and wondering on your efforts on drying time reducing?

[@giestas]

@@ashok1goodlife check out the video on drying in the oven: kzbin.info/www/bejne/jnPNhoOulqyWkLM

[@kenjiclopino8770]

May i ask how long it takes to dicompose? Or even dissolve in water?

[@giestas]

I'd say it dissolves in water in a few hours, but I don't know how long it takes to decompose.

[@tanayatiwari-GMBT]

Hello sir i tried using rice starch instead of cassava but when i boiled it i didn't get that jelly texture to add it to mould it was more like cream

[@giestas]

I tried rice starch with this recipe and didn't manage to make it work either :/

[@tanayatiwari-GMBT]

@@giestas oh it's my project 😭 i thought it would work are there any other methods or ratios that I can try?

[@giestas]

@@tanayatiwari-GMBT it probably works, but I don't know the recipe.

[@TheLalawitch]

Have you tried to make other shapes, other colors? Or make it like a vase, utensils?

[@giestas]

Other colors yes, it's pretty easy: kzbin.info/www/bejne/an28aoOsrN5qr6s

[@akyl2471]

hello sir! may i know why in 1:42 you didnt mix it with a spatula? is there a reason for it?

[@giestas]

That's because starch and water makes up a non-Newtonian fluid, that gets harder as you try to mix it with a spatula, for example.

[@akyl2471]

@@giestas ohhh so it turns into like... oobleck? thank you so much for that

[@dvwn7737]

what mold did you use for the bigger one?

[@giestas]

It's a 20x15cm silicone mold. You can see this mold being used in the video "BIOPLASTIC DIY : Cassava starch Vinegar Glycerin coloured".

[@dvwn7737]

@@giestas thank you!

[@raexxv]

hi! may i know what's temperature when you cooked the mixture? is it in medium high heat? thank youu!!

[@giestas]

Medium high heat yes, the mixture starts to get some consistency from 70⁰C upwards.

[@raexxv]

@@giestas thank you very much !

[@messilee2839]

Can it dissolve in tap water?

[@giestas]

I made a video about that: kzbin.info/www/bejne/enKZhpKif7KAadk

[@casetars5260]

Can we substitute cassava starch with flour?

[@giestas]

No, but if you have a hard time getting cassava starch, maybe you'll find it easier to get potato or corn starch: kzbin.info/www/bejne/i5LdaoSslsmsn9E

[@stephenjosephrubin7906]

Is the 10 days at room temperature or at direct sunlight?

[@giestas]

Room temperature.

[@rominagom9639]

Cassava Startech, vinegar

[@marifia.pusing9879]

What will be the measurement to get more product?

[@giestas]

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.

[@marifia.pusing9879]

Thank you sir.❤ Glod bless❤

[@marifia.pusing9879]

last question. Sir, is it advisable to use sunlight to dry easily or not?

[@jollyjokress3852]

maybe you can reinforce it with Cellulose nano-particles, but I have no idea if the two go together.

[@giestas]

I've been wanting to do some experiments like that, but getting a hold of nano cellulose is very difficult around here...

[@jollyjokress3852]

I believe there are sellers that distribute worldwide - or produce it yourself with certain chemicals;) literature is full with ways how to make them.@@giestas

[@rreshe]

Wow! Does this dissolve in water or hot water?

[@giestas]

Here: kzbin.info/www/bejne/enKZhpKif7KAadk

[@dianaloutapec5313]

hello, just ask if is this edible?

[@professorm4171]

It won't kill you but probably don't taste good.

[@giestas]

You should use food grade vegetable glycerin if that's the objective, and you'll probably survive :) but it won't taste good.

[@justknow-k4b]

hi, is this edible?

[@giestas]

If you use food grade ingredients it should be.

[@Croccini]

Are there other ways to speed up the drying process?

[@giestas]

With a dehydrator you can get a sample to dry in 3 days, but not a lot of people have one, so I've been looking for alternatives...

[@adelahmrhm5502]

@@giestas How about using room temperature and also sunlight? I tried putting it inside a car where the sunlight hits and it dried out for three days. I suggest you also try that.

[@aimee5552]

​@@giestas is oven possible?

[@giestas]

@@aimee5552 here: kzbin.info/www/bejne/jnPNhoOulqyWkLM

[@shifali2979]

What can we use as a substitute of cassava starch

[@giestas]

I've tried potato and corn starch, the process is the same but the ratios are a bit different, you can see it in this video: kzbin.info/www/bejne/i5LdaoSslsmsn9E

[@shifali2979]

@@giestas thankyou

[@timoruth9505]

Can u dry it using an oven?

[@giestas]

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.

[@camillehartmann1016]

​@@giestas ele vai demorar a princípio quantos dias se eu deixar ele no forno?

[@giestas]

@@camillehartmann1016 no desidratador demoraria 12 horas no mínimo; no forno a fazer de desidratador talvez demore o mesmo.

[@adibabdulaziz8426]

min aku minta videonya buat tugas yaa (aku potong sebaian)

[@zayy13anellab55]

What type of glycerol do you use?

[@giestas]

Common glycerol (a.k.a. glycerin) for household applications.

[@adelahmrhm5502]

good day, sir! May I know if you have a research study about making bioplastic using cassava starch? I was hoping I could include it in my research study as references, to properly acknowledge your work. I'm hoping for your reply as soon as possible. Thank you!!

[@giestas]

Thank you for your message, but I haven't made academic research on this subject; the extent of my work is what you see here on the channel.

[@adelahmrhm5502]

@@giestas Thank you for responding! Well, that's a shame. Then, do you have any references of the quantities of the ingredients you used? Such as why exactly 2tbsp of Cassava starch was used?

[@aimee5552]

​@@adelahmrhm5502hi! i'm doing a similar research, is it possible if I read your work for reference?

[@adelahmrhm5502]

@@aimee5552 hello! of course! we've already finished our research study, but the decomposition of the bioplastic was not included in the study. i'll e-mail you the document of our study.

[@adelahmrhm5502]

@@aimee5552 what's your e-mail account?

[@maryfranchyaneageronimo3437]

2:36

[@hillarydawn3013]

Can it dissolve in water??

[@giestas]

Yes!

[@cooldigitaltips]

please sir, what is the glycerin for

[@giestas]

It makes the bioplastic flexible. You can see the effect in this video: kzbin.info/www/bejne/Z5mniaaFp8tjd7s