By Salvatore Ferrara and Michael Konefal
Note: Adult supervision is required
Measuring cup / spoons
Spoon
Milk
Vinegar
Microwave
Microwaveable Containers
Paper Towels
Take one heat-resistant container and add 4 teaspoons of vinegar and set aside.
Measure one cup of milk and put it in another microwaveable container, then place in microwave at 50% power for five minutes.
Once the milk has been heated add it to the container with the vinegar, stir slowly with a spoon, this will start the process and produce curds (small clumps).
Stack a few sheets of paper towels (3 to 4) on a hard surface that is ok to get wet.
Once the mixture is cooled, scoop the curds out with a spoon and place them on the stack of paper towels, try not to scoop up too much liquid.
Fold over the edges of the paper towels and press down on the curds to soak up the remaining liquid.
Knead the curds into a ball, you now have created plastic using milk.
In this video, Michael makes the plastic at the same time as you. This type of plastic is in fact edible, though we aren't making any promises it tastes good. Make sure that you do this with a parent's supervision, and have fun!
https://drive.google.com/file/d/1sr3JBebNKNt5Vl_sbHDE4QAZahMNPirE/view?usp=sharing
In this experiment we used milk and vinegar to make plastic. This is due to a chemical reaction between the heated milk and the vinegar. Milk and vinegar don't mix well naturally, adding heat and agitating the mixture by stirring allows the solution of milk and vinegar to react with one another creating the curds gathered during the experiment. These curds are made up of polymers found in the milk. Milk is made up of many polymers, polymers are long chains of molecules that repeat in a pattern. The polymer found in milk is called casein, this is a Latin word for cheese. Yes, this experiment creates a form of cheese using vinegar. The reason the final product is considered plastic is because, a plastic is any material made up of polymers that can be molded and formed into a shape.
https://carnegiestemgirls.org/2017/08/23/turn-milk-into-plastic/#:~:text=Milk%20contains%20molecules%20of%20a,and%20molded%20as%20casein%20plastic.