MOLECULAR-WEIGHT DISTRIBUTIONS IN THE MINIEMULSION POLYMERIZATION OF STYRENE INITIATED BY OIL-SOLUBLE INITIATORS

被引：28

作者：

ALDUNCIN, JA ^{[1
]}

ASUA, JM ^{[1
]}

机构：

[1] UNIV BASQUE COUNTRY, FAC CIENCIAS QUIM,DEPT QUIM APLICADA, INGN QUIM GRP,APDO 1072, E-20080 SAN SEBASTIAN, SPAIN

来源：

POLYMER | 1994年 / 35卷 / 17期

关键词：

MOLECULAR-WEIGHT DISTRIBUTION; MINIEMULSION POLYMERIZATION; OIL-SOLUBLE INITIATOR;

D O I：

10.1016/0032-3861(94)90558-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The evolution of the molecular-weight distributions in the batch miniemulsion polymerization of styrene initiated by different oil-soluble initiators (lauroyl peroxide, benzoyl peroxide and azobisisobutyronitrile) was investigated. Two series of polymerizations were carried out. In the first, miniemulsions contained only oil-soluble initiators to minimize monomer droplet degradation by molecular diffusion. In the second, the stability of the monomer droplets was reinforced with hexadecane. Also, a series of conventional emulsion polymerizations were carried out. The effect of both the type of initiator and the extent of the compartmentalization of initiator radicals between the polymer particles on the molecular-weight distributions were analysed by means of a mathematical model. A good agreement between experimental results and model predictions was achieved.

引用

页码：3758 / 3765

页数：8

共 16 条

[1] MINIEMULSION POLYMERIZATION USING OIL-SOLUBLE INITIATORS [J].