PEP型嵌段共聚醚非离子表面活性剂的研究

Block Copoly (PEP)s as Non-Ionic Surfactants

以聚乙二醇和环氧丙烷为原料，用常压法合成了一系列氧丙烯—氧乙烯—氧丙烯嵌段共聚醚，对合成产物进行了结构表征，并对产物的浊点、泡沫稳定性、临界胶束浓度、乳化性能等进行了测定。研究结果表明，氧丙烯—氧乙烯—氧丙烯嵌段共聚醚作为非离子表面活性剂，其性能与嵌段序列长度和含量密切相关。

A series of block copoly(PEP)s were prepared from polyethylene glycol and propylene oxide at atmospheric pressure, and characterised by FTIR and 1 H-NMR mothods. The cloud points, foam stabilities, CMCs and emulsifing properties of these copoly(PEP)s have been measured too, the experimental results showed that the surface properties of the copoly(PEP) as non-ionic surfactants depend upon the block length and composition of ethylene oxide or/and propylene oxide within the copoly(PEP) mass.