【摘要】 一类活性极高的高分子表面活性剂范仲勇，李娜，吴大诚（四川联合大学轻纺学院，成都，６１００６５）ＺｈａｏｈｕｉＳｕ，Ｓ．Ｌ．Ｈｓｕ（ＤｅｐａｒｔｍｅｎｔｏｆｐｏｌｙｍｅｒＳｃｉｅｎｃｅ＆Ｅｎｇｉｎｅｅｒｉｎｇ，ＵｎｉｖｅｒｓｉｔｙｏｆＭａｓｓａｃｈｕｓ...更多还原

【Abstract】 Polymeric surfactants are the kind of polymers with the average molecular weight 103￣105 as well as the kind of surface active substances which can decrease obviously the surface tension on the air-water surface. It was found that end-capped polyethylene oxides(PEO) were very active polymeric surfactants, where one or two terminal groups of PEO were replaced with perfluoroalkyl group (perfluorodecanoyl). Their number-averaged molecular weights were in the range of 3 000～16 000When concentration of aqueous solutions for these perfluoroalkyl end-capped PEO was in the range of 0. 4%～1%(percentage by weight),the surface tension of their aqueous solutions decreases as low as 15 mN·m-1 which is the best value of the surface activity for polymeric surfactants up to now. The molecular picture for the adsorption of perfluoroalkyl end-capped PEO was presented briefly.更多还原