Modification of styrene polymer by attaching suitable groups as side chain

Mehrdad Mahkam 1 , Bakhshali Massoumi 2 ,  and Hossien Mirfatahi 2
  • 1 Chemistry Department, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran; tel: +98 412 432 7541
  • 2 Chemistry Department, Payame Noor University of Tabriz, Tabriz, Iran


Chemical modification of inexpensive commercial polymers, such as styrene, is a safe methodology to obtain new copolymers. The 4-chloromethyl styrene (CMS) was copolymerized with styrene (in various mole ratios) by free radical polymerization method at 70 ºC using α,α-azobis(isobutyronitrile) (AIBN) as an initiator. The azide ion was covalently attached to the obtained copolymers with replacement of all the chlorine atoms in CMS units. The 1,3-dipolar click cycloaddition reaction between azido polymers and dimethyl acetylene dicarboxylate (DMAD) yielded polymers with 1,2,3-triazoles in side chain. The polymers, obtained in quantitative yields, were characterized by FT-IR and 1H NMR spectroscopy; thermogravimetric analysis (TGA) and GPC studies. The thermogravimetric analysis (TGA) indicated that the thermal stability of copolymers increases with incorporation of 1,2,3-triazole groups in side chains of copolymers.

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