Synthesis and characterization of poly(p-phenylene terephthalate) crystals obtained by crystallization during polymerization

被引：3

作者：

Kimura, Kunio ^{[1
]}

Endo, Seiji ^{[1
]}

Kato, Yasuo ^{[1
]}

Yamashita, Yuhiko ^{[1
]}

机构：

[1] Okayama Univ, Okayama, Japan

来源：

High Performance Polymers | 1994年 / 6卷 / 01期

关键词：

Aromatic polymers - Condensation - Crystal whiskers - Crystallization - Molecular structure - Morphology - Polymerization;

D O I：

10.1088/0954-0083/6/1/009

中图分类号：

学科分类号：

摘要：

Poly(p-phenylene terephthalate) (PPTE) crystals were prepared by high-temperature solution polymerization via three different types of reaction as follows: bimolecular condensation of (1) 1,4-diacetoxybenzene and terephthalic acid and (2) hydroquinone and diphenyl terephthalate and self-condensation of (3) mono(4′-acetoxyphenyl) terephthalate. In spite of the reaction types, needle-like crystals are not obtained as found with poly(oxy-1,4-benzenediylcarbonyl) (POB) whiskers, under polymerization conditions identical with those used to produce POB whiskers. PPTE and POB have similar molecular structure, that is, they comprise 1,4-phenylene groups and ester linkages, whereas the morphologies of the crystals obtained are quite different. From the structural study, PPTE crystals are single crystals, and polymer chains align perpendicular to the plane of the sheaf-like or plate-like crystal.

引用

页码：83 / 93