An interesting contrast: effects of maleic acid and styrene on the synthesis of functional poly(methyl methacrylate) microspheres

被引：2
作者：
Li, SJ [1 ]
Hu, J
Liu, BL
机构：
[1] Chinese Acad Sci, Inst Organ Chem, Chengdu 610041, Peoples R China
[2] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China
来源：
POLYMER INTERNATIONAL | 2005年 / 54卷 / 01期
关键词：
PMMA microspheres; maleic acid; styrene;
D O I：
10.1002/pi.1641
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 effects of maleic acid and styrene on the polymerization of methyl methacrylate (MMA) have been studied. Both comonomers play a considerable role in terms of particle size and MMA conversion. The polymerization of MMA in the presence of maleic acid can result in larger particles and a higher MMA conversion. However, in the presence of styrene, the polymerization process yields smaller particles and low MMA conversion. This can be related to the different properties of maleic acid and styrene. Maleic acid, a hydrophilic and electron-withdrawing comonomer, can play a positive role in stabilizing the particles and increasing MMA activation. However, for styrene, these effects are reversed due to its opposite properties. The change in particle size may be caused by the change in particle stabilization. The change of MMA conversion can be kinetically attributed to the effects of maleic acid and styrene on the activation process. (C) 2004 Society of Chemical Industry.
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页码：96 / 100
页数：5
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