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SBS and SEBS Block Copolymers as Impact Modifiers …
SBS and SEBS Block Copolymers as Impact Modifiers forPolypropylene CompoundsF. O. M. S. Abreu,1M. M. C. Forte,1S. A. Liberman21 UFRGS, Escola de Engenharia, Laborato rio de Materiais Polime ricos, Av. Osvaldo Aranha, 99 s702,90035 190 Porto Alegre, RS, Brazil2 Braskem , III Po lo Petroqu mico, 95853 000 Triunfo, RS, BrazilReceived 3 February 2004; accepted 23 May 2004 DOI online in Wiley InterScience ( ).ABSTRACT:Blends of polypropylene (PP) and thermo-plastic elastomers (TPE), namely SBS (styrene-butadiene-styrene) and SEBS (styrene-ethylene/1-butene-styrene) Block Copolymers , were prepared to evaluate the effective-ness of the TPE type as an Impact modifier for PP andinfluence of the concentration of elastomer on the polymerproperties. polypropylene homopolymer (PP-H) and ethyl-ene propylene random copolymer (PP-R) were evaluated asthe PP matrix.
SBS and SEBS Block Copolymers as Impact Modifiers for Polypropylene Compounds F. O. M. S. Abreu, 1M. M. C. Forte, S. A. Liberman2 1UFRGS, Escola de Engenharia, Laborato´rio de Materiais Polime´ricos, Av. Osvaldo Aranha, 99 s702,
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