聚乙二醇在无皂乳液共聚体系中的应用

APPLICATION OF POLYETHYLENE GLYCOL IN SOAP-FREE EMULSION COPOLYMERIZATION SYSTEM

在苯乙烯（Ｓｔ）和丙烯酸正丁酯（ＢＡ）的无皂乳液共聚体系中，加入聚乙二醇（ＰＥＧ）作相转移催化剂，考察了其浓度、分子量以及Ｋ２Ｓ２Ｏ８引发剂浓度对反应动力学的影响。讨论了相转移催化作用机理。

The polyethylene glycol (PEG) has been used as phase transfer catalyst in the soap-free emulsion copolymerization system of styrene (St) with butyl acrylate(BA). The influence of the concentration and MW of the PEG, and the amount of initiator K 2S 2O 8 on the reaction kinetics has been discussed. The mechanism of the phase transfer catalysis was also given.