FREE-RADICAL CROSS-LINKING COPOLYMERIZATION OF STYRENE UNSATURATED POLYESTER RESINS .1. PHASE-SEPARATION AND MICROGEL FORMATION

被引：56

作者：

HSU, CP ^{[1
]}

LEE, LJ ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT CHEM ENGN,COLUMBUS,OH 43210

来源：

POLYMER | 1993年 / 34卷 / 21期

基金：

美国国家科学基金会;

关键词：

COPOLYMERIZATION; MICROGEL; PHASE SEPARATION;

D O I：

10.1016/0032-3861(93)90156-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An important feature of free-radical crosslinking copolymerization of styrene (ST)/unsaturated polyester (UPE) resins is the formation of a heterogeneous structure through strong intramolecular reactions and phase separation. Such structure formation affects not only the cure behaviour and rheological changes of the resin but also the physical properties of final products. In this study, the phase separation process was investigated by optical microscopy and time-resolved light scattering goniometry. Partially reacted samples of ST/UPE resin before macrogelation were also prepared by stopping the polymerization at preset times. The size and composition of primary polymers were determined using dynamic light scattering goniometry and Fourier transform infra-red spectroscopy.

引用

页码：4496 / 4505

页数：10

共 43 条

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