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Phase transfer catalyzed polymerization of butylmethacrylate using peroxydiphosphate as an initiator – a kinetic study

Author: 
Thangaraj, G. and Ramu, A.
Subject Area: 
Physical Sciences and Engineering
Abstract: 

Phase transfer catalyzed free radical polymerization of butylmethacrylate (BMA), using peroxydiphosphate (PDP) as an initiator and hexadecyltrimethylammonium chloride (HDTMAC) as a phase transfer catalyst was studied. The polymerization reactions were carried out in ethyl acetate – water bi phase media at 50 ± 0.10C in an inert atmosphere under unstirred condition. The effect of various kinetic parameters such as different concentration of monomer, initiator, phase transfer catalyst (PTC) different acid strength and temperature were studied. The reaction orders with respect to monomer, initiator and the phase transfer catalyst concentrations were found to be 1, 0.5 and 0.5 respectively. The rate of polymerization (Rp) was independent of acid strength and ionic strength. Based on the experimental results obtained, a suitable mechanism has been proposed for the polymerization reaction and its significance was discussed.

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