POLYIMIDES CONTAINING S-TRIAZINE RINGS IN THE MAIN CHAIN - SYNTHESIS AND CHARACTERIZATION

被引：2

作者：

SARWADE, BD ^{[1
]}

WADGAONKAR, PP ^{[1
]}

MAHAJAN, SS ^{[1
]}

机构：

[1] NATL CHEM LAB,DIV POLYMER CHEM,POONA 411008,MAHARASHTRA,INDIA

来源：

POLYMER INTERNATIONAL | 1993年 / 30卷 / 03期

关键词：

POLYIMIDES; S-TRIAZINE; DIISOCYANATES; DIANHYDRIDE;

D O I：

10.1002/pi.4990300305

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Eight s-triazine-containing polyimides were synthesized by solution polycondensation of diisocyanates having an s-triazine ring with pyromellitic dianhydride in dimethylacetamide. Polyimides derived from meta-oriented diisocyanates were amorphous and soluble in dipolar aprotic solvents while those based on para-oriented diisocyanates were semicrystalline and insoluble in organic solvents. However, all the polyimides were soluble in concentrated sulphuric acid. The polyimides showed similar patterns of decomposition with no weight loss below 300-degrees-C in air.

引用

页码：305 / 308

页数：4

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