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Type: Artigo de periódico
Title: Thermal polymerization of styrene in the presence of TEMPO
Author: Nabifar, A
McManus, NT
Vivaldo-Lima, E
Lona, LMF
Penlidis, A
Abstract: To investigate aspects of the contribution of (thermal) self-initiation in nitroxide-mediated radical polymerization (NMRP) of styrene, selective styrene polymerizations with 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) in the absence of initiator were carried out at 120 and 130 degrees C. The results of these experiments (including conversion data, molecular weight averages, polydispersity and molecular weight distribution information) were compared with regular thermal polymerization of styrene and NMRP of styrene in the presence of a bimolecular initiator (benzoyl peroxide; BPO). It was observed that although the thermal polymerization of styrene can be controlled to some extent in the presence of TEMPO to provide polystyrene with low polydispersity, the polymerization was never as controlled as that obtained by a BPO-initiated NMRP. (C) 2008 Elsevier Ltd. All rights reserved.
Subject: Polymers
Controlled/living radical polymerization
Styrene polymerization
Reaction engineering
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.ces.2008.10.013
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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