Phase Transfer Catalysis: Polymerization Kinetics and Mechanism of Methyl Acrylate

被引：5
|
作者：
Thajudeen, H. [1 ]
Ahamed, V. S. Jamal [1 ]
Shabeer, T. K. [1 ]
机构：
[1] New Coll, Postgrad & Res Dept Chem, Madras 600014, Tamil Nadu, India
来源：
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS | 2008年 / 57卷 / 09期
关键词：
benzyltributylammonium chloride; kinetics; methyl acrylate (MA); phase transfer catalyst; potassium peroxomonosulfate; radical polymerization;
D O I：
10.1080/00914030802153264
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Kinetics and mechanism of the free-radical polymerization of methyl acrylate (MA), using potassium peroxomonosulfate (PMS) as a water-soluble initiator in the presence of benzyltributylammonium chloride (BTBAC) as a phase-transfer catalyst (PTC), were studied. The polymerization reactions were carried out under inert and unstirred conditions at a constant temperature of 60 +/- 1 degrees C in ethyl acetate/water biphasic medium. The rate of polymerization (R-p) increased with an increase in the concentrations of MA, BTBAC and PMS. The order with respect to the monomer, initiator, and PTC was found to be 1.0, 0.5, and 0.5 respectively. Rp was independent of the ionic strength and pH of the medium. Based on the kinetic evidences a suitable mechanism is proposed.
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页码：904 / 917
页数：14
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