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Type: Artigo de periódico
Title: Morphology and mechanical properties of polypropylene/maleated styrene-butadiene-styrene triblock copolymer blends
Author: Wilhelm, HM
Felisberti, MI
Abstract: The morphology and mechanical properties of blends of isotactic polypropylene (i-PP) and a maleated butadiene-styrene-butadiene triblock copolymer with maleic anhydride (SBS-MAH), i-PP/SBS-MAH, were investigated and compared with those of corresponding blends of i-PP and a styrene-butadiene-styrene triblock copolymer (SBS), i-PP/SBS. The blends were prepared in a mixer at 190degreesC with 5-25 wt % elastomer compositions. The blends exhibited a two-phase morphology with a disperse elastomer phase in the continuous i-PP matrix. The size and shape of the elastomer particles and the mechanical properties of the blends depended on the nature and concentration of the elastomer. The i-PP/SBS-MAH blends showed an impact strength superior to that of the corresponding i-PP/SBS blends. These results were attributed to the formation of the graft copolymer during the melt blending, which was verified by Fourier transform infrared. (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. 359, n. 365, 2002.
Rights: fechado
Identifier DOI: 10.1002/app.10971
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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