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Photoinitiating capabilities of vinyl polyperoxides and metamorphosis of block-into-block copolymer

Subramanian, K and Kishore, K (1996) Photoinitiating capabilities of vinyl polyperoxides and metamorphosis of block-into-block copolymer. In: Journal of Polymer Science Part A: Polymer Chemistry, 34 (16). pp. 3361-3367.

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Abstract

This article describes the first comprehensive study on the use of a vinyl polyperoxide, namely poly(styrene peroxide) (PSP), an equimolar alternating copolymer of oxygen and styrene, as a photoinitiator for free radical polymerization of vinyl monomers like styrene. The molecular weight, yield, structure and thermal stability of polystyrene (PS) thus obtained are compared with PS made using a simple peroxide like di-t-butyl peroxide. Interestingly, the PS prepared using PSP contained PSP segments attached to its backbone preferably at the chain ends. This PSP-PS-PSP was further used as a thermal macroinitiator for the preparation of another block copolymer PS-b-PMMA by reacting PSP-PS-PSP with methyl methacrylate (MMA). The mechanism of block copolymerization has been discussed. (C) 1996 John Wiley & Sons, Inc.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: vinyl polyperoxides;photoinitiators;block copolymers; unzipping of alkoxy radicals
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 09 May 2011 10:49
Last Modified: 09 May 2011 11:08
URI: http://eprints.iisc.ernet.in/id/eprint/37469

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