POLYMER COLLOID MORPHOLOGY STUDIED BY FREEZE-FRACTURE ELECTRON-MICROSCOPY

被引:13
作者
DISANAYAKA, B
ZHAO, CL
WINNIK, MA
SHIVERS, R
CROUCHER, MD
机构
[1] UNIV TORONTO, DEPT CHEM, 80 ST GEORGE ST, TORONTO M5S 1A1, ONTARIO, CANADA
[2] UNIV TORONTO, ERINDALE COLL, TORONTO M5S 1A1, ONTARIO, CANADA
[3] UNIV WESTERN ONTARIO, DEPT ZOOL, LONDON N6A 3K7, ONTARIO, CANADA
[4] XEROX RES CTR CANADA LTD, MISSISSAUGA L5K 2L1, ONTARIO, CANADA
关键词
D O I
10.1021/la00091a025
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The technique of freeze-fracture electron microscopy has been applied to study the morphology of poly (methyl methacrylate) and polystyrene polymer colloid particles. Both aqueous emulsion-polymerized and nonaqueous dispersion-polymerized particles have been examined. We distinguish essentially two types of fracture patterns. One is composed of irregularly organized globules; the other has a well-developed structure with radiant lines directed from the center to the surface of the particles. The fracture pattern does not seem to be simply a material property of the polymer, and the polymerization medium is not the determining factor. We believe that the fracture pattern is characteristic of polymer particle growth mechanism. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码:162 / 168
页数:7
相关论文
共 34 条
[1]   KINETICS OF DISPERSION POLYMERIZATION OF SOLUBLE MONOMERS .I. METHYL METHACRYLATE [J].
BARRETT, KEJ ;
THOMAS, HR .
JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY, 1969, 7 (9PA1) :2621-&
[2]  
BASSETT DR, 1983, NATO ASI SER, V1, P220
[3]  
BIKERMAN JJ, 1959, ADHES AGE, V2, P23
[4]   STRUCTURE OF COLLOIDAL PARTICLES IN WATER OIL MIXTURES STABILIZED BY POLYMERIC EMULSIFIERS .1. PHASE-DIAGRAMS AND ELECTRON-MICROSCOPE STUDIES [J].
CANDAU, F ;
BOUTILLIER, J ;
TRIPIER, F ;
WITTMANN, JC .
POLYMER, 1979, 20 (10) :1221-1226
[5]  
CHANG HS, 1987, MAKROMOL CHEM-RAPID, V8, P297
[6]  
DISANAYAKA B, IN PRESS J COLLOID I
[7]   SOME ARTIFACTS OF FREEZE-ETCHING TECHNIQUE [J].
DUNLOP, WF ;
ROBARDS, AW .
JOURNAL OF ULTRASTRUCTURE RESEARCH, 1972, 40 (3-4) :391-+
[8]  
Fitch R. M., 1969, J POLYM SCI C, V27, P95
[9]   COAGULATION-CONTROL OF PARTICLE NUMBER DURING NON-AQUEOUS EMULSION POLYMERIZATION OF METHYL-METHACRYLATE [J].
FITCH, RM ;
KAMATH, YK .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1976, 54 (01) :6-12
[10]  
FITCH RM, 1971, POLYM COLLOIDS, P103