含两种不同介晶基团的半刚性共聚酯液晶态的结构研究  

STUDY ON THE STRUCTURE OF SEMIRIGID THERMOTROPIC LIQUID CRYSTAL COPOLYESTERS CONTAINING TWO KINDS OF MESOGENIC GROUPS

作　　者：刘俊秋[1] 王晋[1] 沈家[1] 

机构地区：[1]吉林大学化学系

出　　处：《高分子学报》1994年第2期129-133,共5页Acta Polymerica Sinica

摘　　要：用Ｘ－光衍射，偏光显微镜及ＤＳＣ对含两种不同长度介晶基团４，４’－联苯二酚（Ⅰ）和对苯二甲酸二（对羟苯基）酯（Ⅱ）的系列共聚酯的液晶态进行了表征，据其液晶态中两种介晶单元的堆砌方式提出了可能的模型，这种模型很好地解释了液晶态的Ｘ－光衍射分布．A series of semirigid main Chain thermotropic liquid crystal copolyesters containing two kinds of mesogenic groups were studied by polarizing microscopy,DSC and X-ray diffraction. The results showed that these copolyesters are typical of nematic liquid crystal structure. A possible mode about the packing of two mesogenic moiety in liquid crystal states was proposed, which accounted for the re suits.

关 键 词：热致液晶 共聚酯 向列型 晶体结构 

分 类 号：O633.14[理学—高分子化学]