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Synthesis, characterization of poly (4- benzyloxyphenylmethacrylate) and its copolymer with acrylonitrile and determination of monomer reactivity ratios

Author: 
Somu Mageswari, Narayanan Nisha, John Santhosh Kumar and Kathavarayan Subramanian
Subject Area: 
Physical Sciences and Engineering
Abstract: 

The monomer 4-benzyloxyphenylmethacrylate (4-BOPMA) was synthesized by reacting 4-benzyloxy phenol dissolved in methylethylketone (MEK) with mathacryloyl chloride in the presence of triethylamine. The homopolymer and various copolymers of 4-BOPMA with acrylonitrile (AN) were synthesized by the free radical polymerization in MEK at 70 ± 1oC in nitrogen atmosphere using benzoylperoxide as initiator. The homopolymer and copolymers were characterized by various spectral techniques like IR, 1H-NMR, 13C-NMR spectroscopic techniques. The molecular weights of the polymers were determined by gel permeation chromatography. The glass transition temperature of the polymers were determined by differential scanning calorimetry. The thermal stability of the polymers were performed by thermogravimetric analysis in inert atmosphere. The monomer reactivity ratios were determined using the conventional linearization methods such as Fineman – Ross (r1 = 0.5858, r2= 0.2263), Kelen Tüdös (r1 = 0.5726, r2 = 0.1517) and extended Kelen Tüdös (r1 = 0.5691, r2 = 0.1880).

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