The use of polyelectrolyte stabilisers for suspension polymerisation: the effect of pH on particle size distribution

被引：6

作者：

Georgiadou, S ^{[1
]}

Brooks, BW ^{[1
]}

机构：

[1] Univ Loughborough, Dept Chem Engn, Loughborough LE11 3TU, Leics, England

来源：

POLYMER INTERNATIONAL | 2006年 / 55卷 / 05期

关键词：

suspension; polymerisation; polyelectrolyte; pH; fine particles; electrosteric stabilisation; drop size; methyl methacrylate;

D O I：

10.1002/pi.2003

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ammonium polymethacrylate (APMA) and sodium polymethacrylate (PMA-Na) were used as suspending agents for the suspension polymerisation of methyl methacrylate (MMA). The effect of pH on particle sizes and the stabilisation mechanism were examined. Increasing the pH caused a decrease in the particle sizes, and the formation of fine particles with diameters smaller than 10 mu m. The amount of suspending agent required to stabilise a monomer dispersion and to prevent coalescence during suspension polymerisation decreases with increasing pH. The prevailing stabilisation mechanism that governs the dispersion stability is probably the electrosteric mechanism. (C) 2006 Society of Chemical Industry.

引用

页码：525 / 534

页数：10

共 24 条

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