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Second order non‐linear optical interpenetrating polymer networks based on polyurethane or poly(methyl methacrylate) and epoxy polymer
Author(s) -
Zhang Lingzhi,
Cai Zhigang,
Xu Zeda,
Yu Qingshui,
Liang Zhaoxi
Publication year - 1999
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199906)48:6<467::aid-pi171>3.0.co;2-o
Subject(s) - interpenetrating polymer network , polyurethane , polymer , materials science , epoxy , methyl methacrylate , poly(methyl methacrylate) , methacrylate , polymer chemistry , composite material , polymerization
Two interpenetrating polymer networks (IPNs), (one pseudo‐IPN consisting of a linear polyurethane/epoxy‐based polymer network and one full‐IPN consisting of a poly(methyl methacrylate)/epoxy‐based polymer network) have been synthesized and characterized. Both IPNs showed only one T g ; hence a homogeneous phase morphology is suggested. The second‐order non‐linear optical coefficients ( d 33 ) of the pseudo‐IPN and the full‐IPN were measured and found to be 2.78 × 10 −7 esu and 1.86 × 10 7 esu, respectively. The study of temporal stability at room temperature and elevated temperature (120 °C) indicates that the full‐IPN is more efficient at improving the orientational stability of the non‐linear optical chromophores than the pseudo‐IPN, because of the permanent entanglements of the two component networks in the full‐IPN. © 1999 Society of Chemical Industry