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Type: Artigo de periódico
Title: Reactive compatibilization of maleated polypropylene and maleated poly(styrene-b-butadiene-b-styrene) blends
Author: Wilhelm, HM
Felisberti, MI
Abstract: Blends of maleated polypropylene with maleic anhydride (PP-MAH) and maleated styrene-butadiene-styrene triblock copolymer with maleic anhydride (SBS-MAH) were compatibilized with 4,4'-diaminediphenylmethane, at various concentrations, as the coupling agent for the functionalized polymers. Their properties were compared with those of the corresponding blends of PP-MAH and styrene-butadiene-styrene triblock copolymer. The blends containing 15 and 50 wt % elastomers were prepared in a mixer at 190degreesC and 55 rpm. Torque measurements and solubility tests suggested a graft copolymerization during the melt blending of PP-MAH and SBS-MAH. Infrared spectroscopy was used to characterize the graft copolymer formed during the melt blending of the maleated polymers. The blends presented a morphology of a disperse elastomer phase in a continuous PP-MAH matrix. The size of the elastomeric domains decreased as the diamine and anhydride molar ratio increased. (C) 2002 Wiley Periodicals, Inc.
Subject: blends
poly(propylene) (PP)
reactive processing
Country: EUA
Editor: John Wiley & Sons Inc
Citation: Journal Of Applied Polymer Science. John Wiley & Sons Inc, v. 86, n. 2, n. 366, n. 371, 2002.
Rights: fechado
Identifier DOI: 10.1002/app.10977
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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