Radical polymerization of methyl methacrylate (MMA) initiated by KHSO sub(5) - BTBAC system - a kinetic study

Kinetics of free radical polymerization of methyl methacrylate using potassium peroxomonosulfate as initiator in the presence of benzyltributylammonium chloride (BTBAC) as phase transfer catalyst was studied. The polymerization reactions were carried out under nitrogen atmosphere and unstirred condi...

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Bibliographic Details
Published in:Journal of polymer research 2012-02, Vol.19 (2), p.1-8
Main Authors: Jamal Ahamed, VS, Thajudeen, H, Shabeer, T K
Format: Article
Language:English
Subjects:
Initiators
Monomers
Phase transfer catalysts
Polymerization
Polymethyl methacrylates
Radicals
Reaction kinetics
Strength
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Summary:Kinetics of free radical polymerization of methyl methacrylate using potassium peroxomonosulfate as initiator in the presence of benzyltributylammonium chloride (BTBAC) as phase transfer catalyst was studied. The polymerization reactions were carried out under nitrogen atmosphere and unstirred conditions at a constant temperature of 60 degree C in ethyl acetate/water bi-phase system. The role of concentrations of monomer, initiator, catalyst, temperature, acid and ionic strength on the rate of polymerization (R sub(p)) was ascertained. The orders with respect to monomer, initiator and phase transfer catalyst were found to be 1.5, 0.5 and 0.5 respectively. The rate of polymerization (R sub(p)) is independent of ionic strength and pH. Based on the kinetic results, a suitable mechanism is proposed.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-011-9779-z