出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/05/29 06:31 UTC 版)
出典:『Wikipedia』 (2011/07/20 13:26 UTC 版)
Polystyrene ( /ˌpɒliˈstaɪriːn/; IUPAC Poly(1-phenylethene-1,2-diyl)), abbreviated following ISO Standard PS, is an aromatic polymer made from the monomer styrene, a liquid hydrocarbon that is manufactured from petroleum by the chemical industry. Polystyrene is one of the most widely used plastics, the scale being several billion kilograms per year.