Synthesis and study of aromatic polyamides containing silicon and phenylquinoxaline rings in the main chain

被引：16

作者：

Bruma, M ^{[1
]}

Schulz, B

Köpnick, T

Stiller, B

Belomoina, N

Mercer, F

机构：

[1] Inst Macromol Chem, Iasi 6600, Romania

[2] Inst Thin Film Technol & Microsensor, D-14513 Teltow, Germany

[3] Inst Element Organ Cpds, Moscow, Russia

[4] Raychem Corp, Menlo Park, CA 94025 USA

来源：

EUROPEAN POLYMER JOURNAL | 1999年 / 35卷 / 07期

关键词：

D O I：

10.1016/S0014-3057(98)00198-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New poly(phenylquinoxaline-amide)s with silicon in the main chain have been prepared by polycondensation reaction of a diacid chloride, namely bis(p-chlorocarbonyl-phenyl)-diphenylsilane, with aromatic diamines containing one or two phenylquinoxaline rings separated by a flexible bridge such as ether or methylene. These polymers were easily soluble in polar aprotic solvents such as N-methylpyrrolidinone (NMP) and dimethylformamide (DMF) and showed high thermal stability with decomposition temperature being above 450 degrees C and glass transition temperature in the range of 260-304 degrees C. Polymer solutions in NMP were processed into thin flexible films which exhibited very smooth surfaces, free of pinholes when studied by atomic force microscopy. The free-standing films showed a dielectric constant in the range of 3.6-3.7. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1253 / 1260

页数：8

共 14 条

[1] SYNTHESIS AND PROPERTIES OF NEW POLYPHENYLQUINOXALINE-IMIDE-AMIDES [J].