含聚环氧乙烷的两性多嵌段共聚物的某些性能

研究了(苯乙烯-丁二烯-环氧乙烷)两性多嵌段共聚物的吸水性能、乳化性能及结晶性能。结果表明,共聚物具有良好的吸水性能和乳化性能,共聚物中聚环氧乙烷含量和预聚体聚乙二醇的分子量是影响上述性能的主要因素。共聚物中聚环氧乙烷含量影响共聚物的结晶度和结晶形态,不同的浇铸溶剂对嵌段共聚物结晶形态也有影响。

SOME PROPERTIES OF THE AMPHIPHILIC MULTIBLOCK COPOLYMERS CONTAINING POLYOXYETHYLENE

Water absorption, emulsifying property and crystalline property of the amphiphilic(styrene-butadiene-ethy-lene oxide)multiblock copolymers were studied. The results show that the block copolymer possesses high water ab-sorbency and good emulsifying property. Polyoxyethylene content of the multiblock copolymer and molecular weight of polyethylene glycol prepolymer were the major factors that affect the above two properties. Crystallinity and ctrystalline morphology of the multiblock copolymer were affected by polyoxyethylene content of the multi-block copolymer as well as the kind of casting solvent used.