Stable vinyl polyperoxide: Synthesis, characteristics and thermal initiation potentials of poly(alpha-phenylstyrene peroxide)

Nanda, Ajaya Kumar and Kishore, Kausal (2001) Stable vinyl polyperoxide: Synthesis, characteristics and thermal initiation potentials of poly(alpha-phenylstyrene peroxide). In: Macromolecular Chemistry And Physics, 202 (11). pp. 2155-2160.

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Abstract

The stable vinyl polyperoxide, namely, poly(alpha -phenylstyrene peroxide) (PAPSP), an alternating copolymer of alpha -phenylstyrene and oxygen, has been synthesized by the oxidative polymerization of alpha -phenylstyrene. It was characterized by H-1 and C-13 NMR, FT-IR, DSC, GC-MS and GPC studies. The overall activation energy (E-d) for the degradation of PAPSP was found to be 45.0 kcal/mol. The stability of PAPSP was estimated from its isothermal degradation rate and compared with other related vinyl polyperoxides. Thermal initiating potentialities of PAPSP have been studied by polymerizing styrene at 80 degreesC. The polymerization follows classical kinetics. The mechanism of polymerization has been discussed. The active polymer, which contains PAPSP segments in the polystyrene chain was confirmed by H-1 NMR study. The values of K-2 for PAPSP compared to that of 2,5-dimethyl-2,5-dihydroperoxyhexane and di-tert-butyl peroxide at 80 degreesC indicate that PAPSP can be used as an effective high temperature initiator.

Item Type:	Journal Article
Publication:	Macromolecular Chemistry And Physics
Publisher:	Wiley
Additional Information:	Copyright of this article belongs to Wiley.
Keywords:	Polymerization;Block;Ms
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	04 Feb 2010 05:07
Last Modified:	19 Sep 2010 04:56
URI:	http://eprints.iisc.ac.in/id/eprint/17392

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