摘要
Two monomers of 2,5 bis[( p methoxyphenoxy)carbonyl]benzyl acrylate and 2,5 bis[( p methoxyphenoxy)carbonyl] benzyl methacrylate and their corresponding polymers were successfully synthesized. The mesomorphic behavior of both polymers was examined by using differential scanning calorimetry(DSC) and polarized optical microscopy(POM). It was found that both polymers are noncrystalline with a glass transition temperature of 67.1 ℃ for poly {2,5 bis[( p methoxyphenoxy)carbonyl]benzyl acrylate} and 95.1 ℃ for poly {2,5 bis[( p methoxyphenoxy)carbonyl]benzyl methacrylate}, above which the former can form liquid crystalline state and the clearing temperature is 97.8 ℃ while the latter can not. This indicates that main chain rigidity will affect the liquid crystallinity of mesogen jacketed polymers.
Two monomers of 2,5 bis[( p methoxyphenoxy)carbonyl]benzyl acrylate and 2,5 bis[( p methoxyphenoxy)carbonyl] benzyl methacrylate and their corresponding polymers were successfully synthesized. The mesomorphic behavior of both polymers was examined by using differential scanning calorimetry(DSC) and polarized optical microscopy(POM). It was found that both polymers are noncrystalline with a glass transition temperature of 67.1 ℃ for poly {2,5 bis[( p methoxyphenoxy)carbonyl]benzyl acrylate} and 95.1 ℃ for poly {2,5 bis[( p methoxyphenoxy)carbonyl]benzyl methacrylate}, above which the former can form liquid crystalline state and the clearing temperature is 97.8 ℃ while the latter can not. This indicates that main chain rigidity will affect the liquid crystallinity of mesogen jacketed polymers.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第11期1817-1819,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
中国博士后科学基金
关键词
甲壳型
液晶高分子
液晶性
主链
MJLCP
Di p methoxyphenyl terephthalate, Mesogen jacketed polymers, Liquid crystallinity, Main chain
