Novel liquid crystalline copoly(ester imide)s were synthesized via polyesterification of triethyleneglycol bis(4-carboxyphenyl) ether ( 1e), diacetoxybiphenyl, and diacids with imide moieties. The effects of composition on the changes of T g , T m , and T i were examined by global TSC and DSC. Therm
Electrically conductive composite of polypyrrole and liquid crystalline copoly(ester-amide)s
β Scribed by Jingsheng Bao; Chaochou Xu; Wei Cai; Xian-Tong Bi
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 631 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
The modification of the mechanical properties of polypyrrole ( PPY ) by electrochemical preparation of conductive composite film from pyrrole (PY) and three kinds of liquid crystalline copoly (ester-amide) -PEA ( H ) , PEA ( C ) , PEA (0) -are presented. The electrical conductivity of the PEA(H)/PPY, PEA(C)/PPY, and PEA(O)/PPY composites are the same order of magnitude as PPY. The mechanical properties of the composite films are much better than that of pure PPY, and the composite films have good conductivity and thermostability.
π SIMILAR VOLUMES
Three series of the thermotropic liquid crystalline copoly(imide-ester)s were prepared by direct polycondensation. The first two series of the copoly(imide-ester)s were synthesized from N-(4-carboxyphenyl) trimellitimide with N,N-di( hydroxypropyl) pyromellitic diimide and various aromatic diols. Th
A series of novel, fully aromatic high-molecular-weight poly(amide-ester)s was prepared by the direct polycondensation from terephthalic acid (TPA) and 2,6-naphthalene dicarboxlic acid (NDC) with various aromatic diols and diamines in the presence of diphenyl chlorophosphate (DPCP), LiCl, and pyridi