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Type: Artigo de periódico
Title: Half-sandwich samarium (III) diketiminate bromide as a catalyst for methyl methacrylate polymerization
Author: Fabri, F
Muterle, RB
de Oliveira, W
Schuchardt, U
Abstract: Half-sandwich samarium(III) diketiminate bromide was successfully synthesized and was shown to be active in methyl methacrylate (MMA) polymerization. The effects of temperature, polymerization time and catalyst concentration were studied. Activities of ca. 18 kg of polymethacrylate (PMMA) per mol of samarium, per hour were obtained under optimum conditions (0 degrees C and a MMA/catalyst molar ratio of 100/1), giving a polymer with a molar mass M-n > 24,000 g mol(-1) and a molar mass distribution (M-w/M-n) < 1.4. After 1 h of polymerization, conversions of MMA as high as 96% were observed. (c) 2006 Elsevier Ltd. All rights reserved.
Subject: methyl methacrylate polymerization
samarium(III) complex
diketimino ligand
Country: Inglaterra
Editor: Elsevier Sci Ltd
Citation: Polymer. Elsevier Sci Ltd, v. 47, n. 13, n. 4544, n. 4548, 2006.
Rights: fechado
Identifier DOI: 10.1016/j.polymer.2006.04.055
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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