COMPARISON OF OIL-SOLUBLE AND WATER-SOLUBLE INITIATION OF STYRENE POLYMERIZATION IN A 3-COMPONENT MICROEMULSION

被引：75

作者：

PUIG, JE ^{[1
]}

PEREZLUNA, VH ^{[1
]}

PEREZGONZALEZ, M ^{[1
]}

MACIAS, ER ^{[1
]}

RODRIGUEZ, BE ^{[1
]}

KALER, EW ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT CHEM ENGN,NEWARK,DE 19718

来源：

COLLOID AND POLYMER SCIENCE | 1993年 / 271卷 / 02期

关键词：

STYRENE POLYMERIZATION; LATEX; MICROEMULSION; POLYSTYRENE;

D O I：

10.1007/BF00651813

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The polymerization of styrene in three-component oil-in-water microemulsions made with the cationic surfactant dodecyltrimethylammonium bromide is studied by dilatometry and quasielastic light scattering as a function of type and concentration of initiator. Fast polymerization rates, high conversions, and high molecular weight polymers are achieved with both oil-soluble (AIBN) and water-soluble (potassium persulfate) initiators. The rate of polymerization shows initiation and termination intervals, but no constant-rate interval is observed. Stable monodisperse microlatexes are obtained with both types of initiators. or both AIBN and potassium persulfate, polystyrene molecular weight is proportional to initiator concentration [I]-0.4 and particle radii decrease as [I]-0.2. Polymerization initiation occurs in or at the microemulsion droplets, and polymer particles grow by recruiting monomer and surfactant from uninitiated swollen micelles.

引用

页码：114 / 123

页数：10

共 43 条

[1]

ALEXANDER AE, 1971, PROGR POLYMER SCIENC, V3, P145

[2] PHOTOINDUCED REACTIONS IN POLYMERIZED MICROEMULSIONS [J].