Citation: Zhen Zhong YANG, De Lu ZHAO, Mao XU. Polymerization of Bisphenol A Epoxy Resin with Polyethylene glycol[J]. Chinese Chemical Letters, ;1997, 8(8): 725-728. shu

Polymerization of Bisphenol A Epoxy Resin with Polyethylene glycol

Polymer Physics Laboratory, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080

Received Date: 21 March 1997

Fund Project: This project is supported by the Science Foundation of Polymer Physics Laboratory, The Chinese Academy of Sciences.

The catalyst boron trifluoride etherate was used to catalyze the reaction of epoxy resin with polyethylene glycol (PEG),and the effect of the concentration of the catalyst on the reaction is studied.It is shown that there exist two competitive reactions:I,self polymerization of epoxy resin via chain growth and Ⅱ,copolymerization of epoxy resin with PEG via step growth.At high concentration of the catalyst,reaction I dominates and reaction Ⅱ is negligible.On the contrary,at low concentration of the catalyst,reaction Ⅱ dominates and block copolymers are formed.In the intermediate case,the two reactions are comparable with the result that a gel structure is obtained.
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