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聚乙二醇(Polyethylene glycol)是一类由氧化乙烯聚合而成的杂链聚合物。它有许多名称,如:Postonal,Postonal B(德国商品名,前者为固体,后者为稠厚液体),Carbowax(英美的商品名,其熔点与Postonal相近),聚氧乙烯(苏联名,其聚合度为100—186,与Postonal B相近),Scurol(法国商品名)等。其化学通式为:HOCH_2(CH_2OCH_2)_nCH_2OH,n从7～9起至70～85。聚乙二醇的制法有二种:一是乙二醇脱水的方法,用于制取低分子量的聚乙二醇;另一是氧化乙烯聚合的方法,用这方法可以制得具有
Polyethylene glycol (Polyethylene glycol) is a kind of heterogeneous chain polymerization made of ethylene oxide. It has many names, such as: Postonal, Postonal B (the former is a solid, the latter is a thick liquid), Carbowax (British and American trade names, similar to the melting point of Postonal), polyoxyethylene Degree of polymerization of 100-186, similar to Postonal B), Scurol (French trade name) and the like. Its chemical formula is: HOCH_2 (CH_2OCH_2) _nCH_2OH, n from 7 ~ 9 to 70 ~ 85. There are two ways to make polyethylene glycol: one is the dehydration of ethylene glycol, which is used to make low molecular weight polyethylene glycol; the other is the polymerization of ethylene oxide. With this method,