Properties of poly(4-hyderoxybenzoate) oligomer and its blends with poly(trimethylene terephthalate)

摘要：

The poly(4-hydroxybenzoate) (PHBA) oligomer was synthesized by using the monomer of 4-acetoxybenzoic acid (PABA), and its blends with poly(trimethylene terephthalate) (PTT) are prepared by melt-blending at 250℃ in nitrogen. Their chemical structure characterization and crystal morphology were investigated by using the fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1HNMR), and polarizing optical microscopy, respectively. The results suggest that PHBA oligomer with 3 polymerization degree was synthesized and it is a thermotropic liquid crystal with the nematic characteristics. When the blends crystallize from melt, because the rigid oriented PHBA molecules becomes the nucleating agents for PTT molecules’ crystallization, much transcrystalline layers formed in the blends, although the crystalline PTT/PHBA blends show spherulites morphology character without observing nematic LC phase.

关键词： Poly(4-hydroxybenzoate) PTT Liquid crystal DSC

作者: Mingtao Run Xiaomin Hu Meibo Sun Weitao Ma

作者单位: Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei, P. R. China

会议类型: 国际会议

会议名称: 2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)

会议地点: 昆明

会议语种:英文

页码: 150-153

在线出版日期: 2009-08-02（万方平台首次上网日期，不代表论文的发表时间）