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Study of in‐situ photopolymerization of chiral liquid crystal acrylate
Author(s) -
He Liu,
Zhang Shufan,
Jin Shunzi,
Qi Zongneng
Publication year - 1995
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/pi.1995.210380215
Subject(s) - photopolymer , monomer , acrylate , materials science , acrylate polymer , polymerization , liquid crystal , phase (matter) , polymer chemistry , polymer , birefringence , chemical engineering , composite material , organic chemistry , optics , chemistry , physics , optoelectronics , engineering
Abstract The effect of the smectic and isotropic phase on the photo‐polymerization of the chiral liquid crystalline 4‐acryloxy‐undecanyloxy‐4′‐[S(−)‐2‐methylbutyloxy]‐biphenyl (monomer ( I )) was studied using FTIR. The effect of temperature on the birefringence of surface‐oriented monomer ( I ) and its polymer obtained by in‐situ photopolymerization was also investigated. The results show that photopolymerization in the isotropic phase proceeds at a higher rate than in the smectic phase, when monomer conversion is less than 60%; however, when monomer conversion is above 60%, the photopolymerization rate is independent of the initial phase state of monomer ( I ), and a highly oriented liquid crystalline polyacrylate film can be prepared by in‐situ photopolymerization of the surface‐oriented chiral acrylate ( I ).