Petrochemical

Polymers

Polymers

Many polymers are made of repeat units derived from natural gas or coal or crude oil.  But building block repeat units can sometimes be made from renewable materials such as polylactic acid from corn or cellulosics from cotton linters. Some plastics have always been made from renewable materials such as cellulose acetate used for screwdriver handles and gift ribbon.  When the building blocks can be made more economically from renewable materials than from fossil fuels, either old plastics find new raw materials or new plastics are introduced.

Read 1545 times Last modified on Thursday, 01 February 2018 17:07
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