writer：Liu Yin-Ling,Cai Zhi-Qi,Wen Xiufang,Pi Pihui,Zheng Dafeng),Cheng Jiang,Yang Zhuoru
keywords：Liquid crystalline epoxy resin, Synthesis, Esterification, Cure behavior
source：期刊
specific source：POLYMER BULLETIN卷: 67 期: 1 页: 57-66
Issue time：2011年
This article describes a high efficient and economical method to synthesize a liquid crystalline epoxy resin (LCER) containing biphenol and aromatic ester group, 3,3',5,5'-tetramethylbiphenyl-4,4'-diyl bis(4-(oxiran-2-ylmethoxy) benzoate) (4). First, 3,3',5,5'-tetramethylbiphenyl-4,4'-diyl bis(4-hydroxybenzoate) (3) was prepared by direct esterification of 3,3',5,5'-tetramethylbiphenyl-4,4'-diol (2) with p-hydroxybenzoic acid (1) in the presence of a certain amount of p-toluene sulfonic acid (p-TSA) as catalyst. And then (4) was synthesized by the reaction of (3) with epichlorohydrin. The chemical structure, melting range, and liquid crystalline phase transition behavior of (4) were characterized by FT-IR, (1)H-NMR, (13)C-NMR, mass spectroscopy, differential scanning calorimetry (DSC), and polarized optical microscopy (POM).