How to Turn Milk into Plastic

Did you know you can make plastic from milk? Check out this video and see how to make casein plastic beads and ornaments at home.

All you need to get started with this experiment is hot milk, a heat resistant cup, vinegar, paper towel and a spoon.

Click here to download a PDF of the experiment to print and recreate with your kids at home!

About Casein:

Casein plastics, made from the protein of cows' milk, were introduced in the early 20th century. Casein was commonly used to make many types of plastic ornaments, such as buckles, knitting pins, and beads. Casein plastic was especially important for the button trade, as the material easily takes on dye, allowing for colored buttons to easily be made from pale colored stock. In this experiment, you will make a simple casein plastic that you can dye and form into a shape.

Find us at to share the results of your casein plastic experiment! Also, be sure to tune in for the next segment of ABC11 Science Club with BASF next Wednesday at 4:28 PM during Eyewitness News.