LIGHT-SCATTERING CHARACTERIZATION OF SPHERICAL-PARTICLES PREPARED BY THE DISPERSION POLYMERIZATION OF METHYL-METHACRYLATE IN A NONAQUEOUS MEDIUM

被引：31

作者：

STEJSKAL, J

KRATOCHVIL, P

KOUBIK, P

TUZAR, Z

URBAN, J

HELMSTEDT, M

JENKINS, AD

机构：

[1] KARL MARX UNIV, SEKT PHYS, O-7010 LEIPZIG, GERMANY

[2] UNIV SUSSEX, SCH CHEM & MOLEC SCI, BRIGHTON BN1 9QJ, E SUSSEX, ENGLAND

来源：

POLYMER | 1990年 / 31卷 / 10期

关键词：

block copolymer; dispersion polymerization; light scattering; particle molar mass; particle size; poly(methyl methacrylate) dispersion;

D O I：

10.1016/0032-3861(90)90002-G

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(methyl methacrylate) particles stabilized by polystyrene-block-poly(ethylene-co-propylene) in decane were prepared by dispersion polymerization. Scanning electron microscopy showed that the particles are spherical, relatively uniform in size and of submicrometre dimensions. Particle molar masses Mw of the order of magnitude 109 g mol-1 and radii of gyration can be determined with good accuracy by static light scattering if a logarithmic version of the Zimm plot is used. Geometric dimensions were calculated from the radii of gyration. Information on particle swelling can also be derived from the light-scattering data. The particle cores are found to be considerably swollen. The dimensions obtained from static light scattering are in accord with the dynamic light-scattering data. © 1990.

引用

页码：1816 / 1822

页数：7

共 19 条

[1]

Barrett K. E. J., 1975, DISPERSION POLYM ORG

[2] KINETICS OF DISPERSION POLYMERIZATION OF SOLUBLE MONOMERS .I. METHYL METHACRYLATE [J].