SYNTHESIS AND CHARACTERIZATION OF BLOCK COPOLYMERS OF POLYETHER SULFONE WITH LIQUID-CRYSTALLINE POLYESTERS

被引：7

作者：

HSU, CS

CHEN, LB

机构：

[1] Department of Applied Chemistry, National Chiao Tung University, Hsinchu

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1993年 / 34卷 / 01期

关键词：

D O I：

10.1016/0254-0584(93)90115-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of novel ABA block copolymers containing a liquid crystalline polyester (A) block and an amorphous polyether sulfone (B) block were prepared. The block copolymers were characterized by FT-IR spectroscopy, differential scanning calorimetry, thermogravimetric analysis, optical polarizing microscopy and X-ray diffraction measurement. Calculated results obtained from FT-IR spectra and a hydrolysis study reveal that the block copolymers contain 17-33% weight of polyether sulfone segments. All the prepared block copolymers have shown a liquid crystalline property. The block copolymer containing 33% polyether sulfone presented a glass transition at 180-degrees-C and a crystalline to nematic phase transition at 278-degrees-C. The other copolymers have exhibited only a crystalline to nematic phase transition at approximately 255-degrees-C.

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页码：28 / 34

页数：7

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