Synthesis and characterization of branched polymers by a free radical approach using a novel 'macroiniferter'

Ramakrishnan, Latha and Sivaprakasam, Kannan (2005) Synthesis and characterization of branched polymers by a free radical approach using a novel 'macroiniferter'. In: Polymer, 46 (15). pp. 5506-5513.

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Abstract

Free radical bulk polymerization of styrene and methyl methacrylate(MMA) was carried out using a novel 'macroiniferter' which resulted in branched polymers with relatively narrow molecular weight distribution.This approach involving the novel macroiniferter;poly[3-(t-butylperoxy)propyl disulfide] (PBPPDS) that has side chain peroxide groups and main chain disulfide linkages was developed to prepare soluble branched polymers as well as to control the extent of branching in vinyl polymers synthesized via a free radical route. The synthesis, characterization and thermal degradation studies of PBPPDS are reported here for the first time. The resulting polystyrene (PS) and poly(methyl methacrylate) (PMMA) polymers were characterized using gel permeation chromatography (GPC), intrinsic viscosity [77] measurements and the degree of branching was studied by the determination of g' factor.

Item Type:	Journal Article
Publication:	Polymer
Publisher:	Elsevier Science Ltd
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	Macroiniferter;Branched polymer synthesis;Polysulfide polymers
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	17 Aug 2005
Last Modified:	19 Sep 2010 04:19
URI:	http://eprints.iisc.ac.in/id/eprint/3514

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