External links History of Polymers & Plastics for Teachers. by The American Chemistry Council (HTML format) or (PDF format) - 1.9MB, which includes the "chasing arrow" recycling symbols (PET is #1) and a description of plastics. An interesting toy has been developed using boPET and a stick-shaped Van de Graaff generator.
External links History of Polymers & Plastics for Teachers. by The American Chemistry. Council (HTML format) or (PDF format) - 19MB, which includes the "chasing arrow" recycling symbols (PET is #1) and a description of plastics. An interesting toy has been developed using boPET and a stick-shaped Van de Graaff generator.