Make bioplastic by yourself!

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Subtitles available in English, German and French.

What ingredients and material do you need?
👉water, corn starch, vinegar, glycerin (you can get it in a pharmacy), cooking pot, hotplate, whisk, wooden spoon & baking tray

How can you DIY?
👉Add 1 tablespoon of starch and 1 teaspoon of vinegar to 4 tablespoons of water in a cooking pot. Add also 1 teaspoon of glycerin. You can get the glycerine in a pharmacy. If you want to make more bioplastics, you can double, triple, etc. the quantities.
👉Stir the mixture thoroughly with a whisk and heat over medium heat. Always keep stirring.
After a few minutes, the mixture becomes thicker, you have to then replace the whisk with a wooden spoon to continue stiring.
👉After more or less 10 minutes you have a sticky and glassy substance in your cooking pot. You can then spread this substance on a baking tray or another suitable surface.
👉Wait at least 24 hours for the bioplastic to dry. Then you can pull it off the baking tray.

What’s the duration⏱️ of this DIY?
👉45 minutes of production – finished bioplastic earliest after 24 hours

What’s the scientific explanation?
👉The starch that serves as a raw material in this experiment consists of very long molecular chains, many of which are branched. In order to produce bioplastic from it, the starch must be boiled with vinegar. A chemical reaction takes place in which the side branches of the molecular chains making up the starch, are "cut off". The results are long starch molecule chains (which can be compared to cooked spaghetti). The effect of the third ingredient, the glycerin, can be explained well with the "spaghetti model": long, damp spaghetti stick together and get stuck. Transferred to the bioplastic, it would be rigid after drying and therefore easily fragile. The oily glycerin serves as a "lubricant", the spaghetti or the long starch molecules can glide past each other. The bioplastic softens and stays flexible even when it has dried. You can control whether your bioplastic is getting harder or softer by adding more or less glycerin.

Some additional tips:
👉You can also use cooking oil, instead of glycerin, but it doesn’t work as well.
👉The more glycerin you take, the softer your bioplastics becomes. If you take less glycerin, the bioplastic will become harder but also more fragile.
👉If you want to make colored bioplastic, you can add color to the substance. Food coloring works well, but don’t hesitate to try out other dyes!
👉If you want to convert the quantities into milliliters, one tablespoon corresponds to 15 ml and 1 teaspoon to 5 ml.
👉You can also sew purses, make hats or other items for Carnival out of the bioplastic fabric! Just one thing: please note that the bioplastic fabric is not waterproof!

Hazard note⚠️
👉The hot bioplastic is sticky. Make sure to not burn yourself with it and please only try it in the presence of an adult!

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📹Video: Ingo Knopf/scienceRELATIONS & FNR

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For everybody who asked himself what the link explains here is a short translation. Take one tablespoon starch mix it with one teaspoon vinegar, 4 tablespoons water and one teaspoon glycerine in a pan. Take a whisk and mix it throughly at a medium heat until it is a thick goey mass. Now change your whisk with a big spoon and put the goey bioplastic on a cooking sheet. Let it cool and give it any shape and thickness you like. Leave it 24h to dry. Now you have your bioplastic. Have fun ! By the way you can experiment with the glycerine to change the hardness of your bioplastic. More glycerine makes a softer plastic and less a harder but more brittle plastic.

Telectronics

I had google auto- translate it from german:
"Add 1 tablespoon of starch and 1 teaspoon of vinegar to 4 tablespoons of water in a saucepan. Add 1 teaspoon of glycerine. The glycerine you get in a pharmacy. If you want to make more bioplastics, you can double, triple, etc. the quantities.

Stir the mixture thoroughly with a whisk and heat over medium heat. Always keep stirring. After a few minutes, the mixture becomes tougher, you have to then replace the whisk with a wooden spoon to continue to stir. After 10 minutes at the latest, you have a sticky and glassy substance in your saucepan. You can then pass on a baking sheet or other suitable surface. Wait at least 24 hours for the bioplastic to dry. Then you can pull it off the baking sheet. The bioplastics can be cut well if you want to make something out of it.

If you want to make objects, you can rub the still soft bioplastic into fabric. But first check if the bioplastic is not too hot so you do not burn yourself! For example, you can place this bioplastics-soaked fabric on an upside-down bowl and smooth it out. Wait at least 24 hours before removing the dried bioplastic again. For example, you can make bowls made from bioplastic material. In the video you see an example, but let your ingenuity run wild!"

spacecaptain

That*s really unbelievable....! We have such knowledge and we don't work it out...!!! It should be a big industry!

GertKlimanschewski

If you ever tried making this and it didn't work please reduce the amount of the Glycerine to 3/4 teaspoons!!

dubuuu

It seems eco-friendly to make bio-plastics, not oil. However, bioplastics that need to be decomposed by heat are having difficulty in post-production processing. PHA, which decomposes without heat, looks better in the future than PLA, where raw plastic decomposes only into heat. In the future, PHA materials will become more perfect eco-friendly materials.

qgykvpi

how do you dispose of the residue from the cooking pot?

ihhzt.

Is this waterproof and does the vinegar add any slight smell to the plastic?

charliebrownsabstractmind

Can we make hard cups and spoons in your method by not adding glycerine?

mrinnovatorin

Add 1 tablespoon of starch and 1 teaspoon of vinegar to 4 tablespoons of water in a saucepan. Add 1 teaspoon of glycerine. The glycerine you get in a pharmacy. If you want to make more bioplastics, you can double, triple, etc. the quantities.

Stir the mixture thoroughly with a whisk and heat over medium heat. Always keep stirring. After a few minutes, the mixture becomes tougher, you have to then replace the whisk with a wooden spoon to continue to stir. After 10 minutes at the latest, you have a sticky and glassy substance in your saucepan. You can then pass on a baking tray or other suitable surface. Wait at least 24 hours for the bioplastic to dry. Then you can pull it off the baking sheet. The bioplastics can be cut well if you want to make something out of it.

If you want to make objects, you can rub the still soft bioplastic into fabric. But first check if the bioplastic is not too hot so you do not burn yourself! For example, you can place this bioplastics-soaked fabric on an upside-down bowl and smooth it out. Wait at least 24 hours before removing the dried bioplastic again. For example, you can make bowls made from bioplastic material. In the video you see an example, but let your ingenuity run wild

That's it humans :)

infusions

Can we use cassava starch as a substitute for corn starch?

aaliyahnicolemortel

•After how many days does this bioplastic begin to decompose?
• What material do you suggest me to use if this material must to be in contact with water?
Please answer me :)

marcodelia