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Photocrosslinked polymer and interpenetrating polymer network for nonlinear optics
Author(s) -
Zhang Lingzhi,
Cai Zhigang,
Yu Qingshui,
Liang Zhaoxi
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990214)71:7<1081::aid-app6>3.0.co;2-8
Subject(s) - photoinitiator , cationic polymerization , interpenetrating polymer network , sulfonium , photopolymer , polymer , materials science , polymer chemistry , epoxy , polymerization , prepolymer , methacrylate , radical polymerization , chemistry , salt (chemistry) , composite material , organic chemistry , polyurethane , monomer
Two photocrosslinkable NLO polymers of poly(glycidyl methacrylate) substituted with 4‐nitro‐4′‐hydroxyl stilbene (PGMAS) and acryloyl‐functionalized epoxy‐based polymer (PENAA) carrying 4‐nitroaniline moieties were synthesized and characterized. By using the sulfonium salt cationic photoinitiator BDS · 2PF 6 which can induce cationic or/and radical polymerization, the photocrosslinking of PGMAS and the interpenetrating polymer network (IPN) formed by the photocrosslinking of PGMAS and PENAA simultaneously were reported. The poled and photocrosslinked polymer films and IPN films exhibit relatively stable second‐order nonlinear optical activity. The influence of stilbene isomerization in PGMAS films with different crosslink densities on the SHG stability was also investigated. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 71: 1081–1087, 1999