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Type: Artigo de periódico
Title: Bulk modification of styrene-butadiene-styrene triblock copolymer with maleic anhydride
Author: Wilhelm, HM
Felisberti, MI
Abstract: The bulk modification of SBS rubber with maieic anhydride in a mixing chamber of a Haake rheomixer was studied. The effect of temperature, maleic anhydride, and benzoyl peroxide concentrations on the grafting efficiency was evaluated. High grafting efficiency was achieved when the ratio of peroxide and maleic anhydride concentration was high. On the other hand, on this condition high insoluble fraction was generated. The addition of a diamine, 4,4'-diaminediphenylmethane to the reaction mixture minimizes the amount of insoluble polymer. However, the grafted MAH content also decreases. The graft copolymer was characterized by infrared spectroscopy and the grafting extension was determined by titration. (C) 2002 John Wiley Sons, Inc.
Subject: block copolymers
functionalization of polymers
reactive processing
Country: EUA
Editor: John Wiley & Sons Inc
Citation: Journal Of Applied Polymer Science. John Wiley & Sons Inc, v. 83, n. 13, n. 2953, n. 2960, 2002.
Rights: fechado
Identifier DOI: 10.1002/app.10355
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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