Synthesis and characterization of siloxane contained liquid crystalline polymers with two symmetric mesogens

被引：1
|
作者：
Noh, HG
Shim, HK
Chang, JH
Jin, JI
机构：
[1] KUMOH NATL UNIV TECHNOL,DEPT POLYMER SCI & ENGN,KYUNGBUK 730070,SOUTH KOREA
[2] KOREA UNIV,DEPT CHEM,SEOUL 136701,SOUTH KOREA
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1996年 / 280卷
关键词：
D O I：
10.1080/10587259608040317
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
New thermotropic siloxane contained liquid crystalline polymers with two symmetric mesogens were prepared by hydrosilation with Rh(PPh(3))(3)Cl catalyst. It was found that Rh(PPh(3))(3)Cl catalyst was effective for low molecular weight polymerization. The resulting polymers exhibited good solubility in organic solvents such as tetrahydrofuran(THF), chloroform, and so on. The structures of the monomer and polymers were confirmed by IR, H-1 and C-13 NMR spectra The number average molecular weight(<(Mn)over bar>) values of the polymers were in the range of 2000 similar to 6000. Thermal properties of the monomers and the polymers were analyzed by differential scanning calorimetry(DSC), and polarized optical microscopy. Monomers did not show liquid crystalline phase but the polymers exhibited nematic phases.
引用
收藏
页码：103 / 108
页数：6
相关论文
共 50 条
12345