Comparison between nadimide and 1,2,3,6-tetrahydrophthal-imide end-capped resins, preparation and thermal behaviour

被引：7

作者：

Bounor-Legare, V ^{[1
]}

Mison, P ^{[1
]}

Sillion, B ^{[1
]}

机构：

[1] Lab Mat Organ Proprietes Specif, CNRS, UPR 9031, F-69390 Vernaison, France

来源：

POLYMER | 1998年 / 39卷 / 13期

关键词：

1,2,3,6-tetrahydrophthalimide; nadimide; para- and meta-phenylenediamine (mPDA and pPDA);

D O I：

10.1016/S0032-3861(97)00603-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nadimide and tetrahydrophthalimide end-capped oligomers have been synthesized from a mixture of para- and meta-phenylenediamine, 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (HFDA) and nadic or tetrahydrophthalic anhydride. Several percentages (25 to 50%) of metaphenylenediamine were used to obtain end-capped oligomers soluble in N-methylpyrrolidone. The tetrahydrophthalimide end-capped resins were characterized by H-1 nuclear magnetic resonance and size exclusion chromatography; their rheological behaviour was compared to their nadimide analogues. As expected from statistics both nadimide and tetrahydrophthalimide end-capped oligomers exhibit similar polydispersity ratios, with a high proportion of diimides which do not contain the HFDA moiety. However, their thermal treatments lead to different behaviours. Bis-nadimides gave crosslinked insoluble materials and bis-tetrahydrophthalimides gave soluble materials in spite of the disappearance of their olefinic protons. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2815 / 2823

页数：9