MODEL FILLED POLYMERS .9. SYNTHESIS OF UNIFORMLY CROSS-LINKED POLYSTYRENE MICROBEADS

被引：28

作者：

DING, ZY ^{[1
]}

MA, SM ^{[1
]}

KRIZ, D ^{[1
]}

AKLONIS, JJ ^{[1
]}

SALOVEY, R ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1992年 / 30卷 / 11期

关键词：

POLYSTYRENE; SYNTHESIS OF UNIFORMLY CROSS-LINKED MICROBEADS OF; CROSS-LINKED POLYSTYRENE; SYNTHESIS AND CHARACTERIZATION OF MICROBEADS OF; COPOLYMERIZATION OF STYRENE AND DIVINYLBENZENE TO PRODUCE UNIFORMLY CROSS-LINKED MICROBEADS;

D O I：

10.1002/polb.1992.090301102

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Monodisperse sized crosslinked polystyrene (PS) beads prepared by reaction of styrene (S) and divinylbenzene (DVB), in batch emulsion copolymerization in the absence of emulsifiers, are not uniformly crosslinked, because DVB is more reactive than S. For copolymerization of 1 to 10 mol % DVB and S, within each crosslinked PS microbead, the crosslink density varies by a factor exceeding two and decreases with increased conversion. A semicontinuous copolymerization, involving incremental additions of DVB, produces uniformly crosslinked PS beads. For both copolymerization techniques, T(g) correlates well with crosslink density and PS beads are spherical and monodisperse in size.

引用

页码：1189 / 1194

页数：6

共 32 条

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