Making glue from milk

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A close-up image of milk and a splash where more milk is poured or added

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Try this class practical to prepare a polymer glue from milk using the protein casein. Includes kit list and safety instructions.

A glue can be made from milk by souring it using vinegar (an acid) which separates it into curds and whey. The curds can be neutralised by various bases to produce a variety of different glues. In this experiment, students make glue using a protein in milk called casein.

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