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Reactive Extrusion of Polypropylene and Nylon Blends from Commingled Plastic Wastes
Author(s) -
Kim Gwang Ho,
Hwang Seung Sang,
Cho Bong Gyoo,
Hong Soon Man
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750424
Subject(s) - materials science , reactive extrusion , maleic anhydride , polypropylene , compatibilization , nylon 6 , izod impact strength test , composite material , extrusion , thermoplastic elastomer , rheology , thermoplastic , copolymer , melt flow index , polymer blend , elastomer , polymer , ultimate tensile strength
Reactive extrusion for recycled PP/nylon blends from commingled plastic wastes was investigated through thermal, morphological, mechanical and rheological studies. From SEM investigation, we found improved surface morphologies with homogeneous domains in the recycled 75/25 PP/nylon blends compatibilized with copolymers containing maleic anhydride (MA) as a reactive functional group; SEBS‐g‐MA, PP‐g‐MA, PE‐g‐MA. Especially, SEBS‐g‐MA thermoplastic elastomer which is highly reactive with amine terminal group of nylon, resulted in a large increase of impact strength above nearly 200%. This compatibilization effect resulted from the increase of interfacial adhesion and the reduction of domain size of dispersed phase in PP/nylon blend system. To confirm the existence of this network structure, we measured a dynamic rheological properties.
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