Micro-flowers of poly(p-phenylene pyromelliteimide) crystals

被引：9

作者：

Wakabayashi, Kanji ^{[1
]}

Uchida, Tetsuya ^{[2
]}

Yamazaki, Shinichi ^{[1
]}

Kimura, Kunio ^{[1
]}

机构：

[1] Okayama Univ, Grad Sch Environm Sci, Kita Ku, Okayama 7008530, Japan

[2] Okayama Univ, Grad Sch Nat Sci & Technol, Kita Ku, Okayama 7008530, Japan

来源：

POLYMER | 2011年 / 52卷 / 03期

关键词：

Crystallization; Morphology; Polyimide; MODULUS POLYIMIDE FIBERS; MORPHOLOGY CONTROL; OLIGOMER; POLY(P-OXYBENZOYL);

D O I：

10.1016/j.polymer.2010.12.022

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Morphology control of poly(p-phenylene pyromelliteimide) (PPPI) crystals was examined using reaction-induced crystallization of oligomers during solution polymerization of self-polymerizable N-(4'-aminophenyl)-3-carboxyl-4-alkoxycarbonylPhthalimide. Micro-flowers of the PPP1 needle-like crystals were formed in which the needle-like crystals grew radially from the center part as petals. The molecules aligned regularly along the long axis of the needle-like crystal. The structure of alkoxy group in the monomer and the monomer concentration influenced the size of the needle-like crystals, and their average length and width were changeable from 640 nm to 1.69 mu m and from 110 nm to 210 nm, respectively. The average thickness was 20 nm. The obtained micro-flowers possessed high crystallinity and exhibited excellent thermal stability. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：837 / 843

页数：7

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