曹路,钦维民,王燕萍,魏朋,许华君
CAO Lu,QIN Wei-min,WANG Yan-ping,WEI Peng,XU Hua-jun

• 1:东华大学化学化工与生物工程学院
• 2:东华大学材料科学与工程学院

摘要(Abstract)：

用熔融缩聚法制备了含有2,2-双(4-羟基苯基)丙烷(BPA)、1,1-双(4-羟基苯基)苯乙烷(BPAP)、2,2-双(4-羟基苯基)六氟丙烷(BPAF)的系列聚芳酯,并采用固相聚合增黏的方法提高了聚芳酯的相对分子质量,从而使其拥有更好的热性能和更优良的加工性能。采用傅里叶红外光谱、差示扫描量热分析、热失重分析、热台偏光显微镜、熔融指数仪等手段对其进行表征,证明这种从分子结构修饰聚芳酯分子链改变聚芳酯热力学性能的手段是行之有效的。在热台偏光显微镜中观察到的热致性液晶图像也证实在聚合物内部含有热致性液晶晶区。通过测试对比发现,含有BPAP单体的聚芳酯同时兼顾了较高的耐热性能和更优良的加工性能。
A series of liquid crystalline polyarylates were prepered from 2,2-bis(4-hydroxyphenyl) propane(BPA), 1,1- bis(4- hydroxyphenyl) benzene ethane(BPAP), 2,2- bis(4- hydroxyphenyl)hexafluoropropane(BPAF) via melt polymerization. Liquid crystalline polyarylates molecular weight were increased by usingsolid state polymerization method. Liquid crystalline polyarylates were characterized by Fourier transforminfrared, differential scanning calorimetry, thermal gravimetric analysis, polarized optical microscopy andmelt index meter. The results showed that the decomposition temperature at 5 % weight loss, the glass tem-perature of the liquid crystalline polyarylates and the melting temperature was in range of 352~408 ℃, 98~128 ℃ and 221~237 ℃ respectively. The thermotropic liquid crystal phase were confirmed by observingbanded texture image in the POM.

关键词(KeyWords)： 热致性液晶;聚芳酯;固相聚合
thermotropic liquid crystalline,polyarylate,solid state polymerization

Abstract:

Keywords:

基金项目(Foundation): 上海市教育委员会科研创新项目;; 中央高校基本科研业务费专项资金;; 产业用纺织品教育部工程研究中心资助项目;; 高等学校学科创新引智计划资助(No.111-2-04)

作者(Author): 曹路,钦维民,王燕萍,魏朋,许华君
CAO Lu,QIN Wei-min,WANG Yan-ping,WEI Peng,XU Hua-jun

DOI: 10.16090/j.cnki.hcxw.2014.03.004

参考文献(References)：

• [1]Chang H S,Wu T Y,Chen Y J.Synthesis and properties of TLCPs with 2,6-naphthalene-based mesogen,polymethylene spacer,and nonlinear 4,4′-thiodiphenyl links[J].Journal of Applied Polymer Science,2002,83:1 536-1 546.
• [2]Yonetake K,Takahashi M,Masuko T,et al.Synthesis and characterization of liquid crystalline copolyester of 4-hydroxy-2,3,5,6-tetrafluorobenzoic acid with 6-hydroxy-2-naphthoic acid[J].Journal of Polymer Science Part A:Polymer Chemistry,1998,36:413-419.
• [3]严兵,王飞,缪从兵,董国兴.热致性芳香族聚酯液晶的发展[J].化工中间体,2010(5):10-14.
• [4]陈玉伟,魏朋,王依民,等.热致性液晶聚芳酯纤维的制备与结构研究[J].合成纤维,2012,41(9):19-23
• [5]钦维民,王燕萍,朱卫彪,等.高性能聚芳酯纤维的研制和表征[J].合成纤维,2012,41(4):1-5.
• [6]Hsiao S H,Chiang H W.Synthesis and properties of new fluorinated polyarylates derived from 1,1-bis(4-hydroxypheny1)-1-phenyl-2,2,2-trifluoroethane and aromatic diacid chlorides[J].European Polymer Journal.2004,40:1 691-1 697.
• [7]朱秀华.熔融固相聚合法合成聚乳酸的工艺研究[D].天津工业大学,2006:10-19.
• [8]马建标.功能高分子材料[M].化学工业出版社,2000:263-264.
• [9]庄园园.热致性液晶聚芳酯纤维的制备与表征[D].东华大学,2010:32-42