Synthesis and Photoinitiation Activity of a Novel Cationic Macrophotoinitiator Polystyrene-iodonium Hexafluoroantimonate

doi:10.7517/j.issn.1674-0475.2008.06.438

Abstract

Abstract: In this article,a novel Cationic Macropbotoinitiator Polystyrene-iodonium hexafluoroanti-monate (PS-I·SbF₆) was prepared by the reaction of Polystyrene with [hydroxy(tosyloxy)iodo] benzene.The later product PS-I·SbF₆ was identified by ¹H-NMR,FTIR,GPC,DSC,and UV spectrum.The red shift phenomenon was observed in the ultraviolet spectrum of PS-I·SbF₆,itsλ_max moved from 227 to 260 nm,so it can well match with mercury lamp.Compared with the small molecular iodonium photoinitiators,its relative migration ratio in the cured film was much lower. The photoinitiation activities of the epoxy system in which PS-I·ShF₆ as a cationic photoinitiator were studied.Results showed that the system had good curing and post-curing ability.

Key words: iodonium salt, cationic macrophotoinitiator, UV curing, photoinitiation activity

CLC Number:

XIA Chao-rong, LIU Ren, HUANG Qiang, ZHANG Sheng-wen, JIANG Jin-qiang, LIU Xiao-ya. Synthesis and Photoinitiation Activity of a Novel Cationic Macrophotoinitiator Polystyrene-iodonium Hexafluoroantimonate[J]. Imaging Science and Photochemistry, 2008, 26(6): 438-444.

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