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bioplastic products: what is glycerol?

by eve

 

hi! i am confused i what is glycerol to be used in bioplastic. i am into a bioplastic investigatory project for my pupils.


 

ANSWER:  Glycerol is a term for glycerine in liquid form. For most bioplastic projects, you will want to use a liquid glycerol solution that is 99% water and 1% glycerine by volume.

You can often buy glycerol solutions at grocery or drug stores. Sometimes, you can buy pure glycerine in which case you can make your own solution with water. The following instructions appear on the Green Plastics book by E. S. Stevens:

“Before you begin, it will be useful to make up a stock solution of diluted glycerol.
Mix up a solution that has 10ml of glycerol for every litre of water (or 2 tsp of glycerol for every quart). This will give you a solution that is 1% by volume. Everytime a recipe calls for a certain amount of a 1% glycerol solution you can then simply measure from this stock”

I have heard it is more difficult to buy glycerine outside of the United States, however there are a number of online stores that should let you order it and that will ship it to you.

glycerine


Comments (2)

  1. Green Plastics says:

    Hello Eve! I have published your question and also written the answer in the post above, to help other people who have the same question. Hopefully this will help!

  2. Virginia says:

    Hi! Glycerol, Sorbitol and water, among others, are plasticisers but what are the differences between them? When use glycerol and/or sorbitol? Can be water use just by itself effectively?

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