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Mechanical, water absorption, and morphology of recycled polymer blend rice husk flour biocomposites
Author(s) -
Chen Ruey Shan,
Ab Ghani Mohd Hafizuddin,
Salleh Mohd Nazry,
Ahmad Sahrim,
Tarawneh Mou'ad A.
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41494
Subject(s) - materials science , absorption of water , compatibilization , composite material , husk , high density polyethylene , ultimate tensile strength , distilled water , glycidyl methacrylate , extrusion , maleic anhydride , scanning electron microscope , izod impact strength test , polymer , polyethylene , polymer blend , copolymer , chemistry , botany , chromatography , biology
Rice husk flour (RHF) biocomposites based on uncompatibilized and compatibilized recycled high density polyethylene/recycled polyethylene terephthalate (rHDPE/rPET) with ethylene‐glycidyl methacrylate (E‐GMA) copolymer were prepared through a two‐step extrusion and hot pressing with fiber loadings of 40, 60, and 80 wt %. Results showed that tensile and flexural properties increased. However, the elongation to break and impact strength decreased as the RHF loading increased. Compatibilizing polymer blend matrices can further enhance the mechanical properties. Water absorption (WA) test were examined in distilled and seawater. It is interesting to note that for composites made from uncompatibilized matrix, the calculated D and K SR were lower in seawater, but for the compatibilized matrix composites, the D and K SR obtained were generally lower in distilled water. However, compatibilization of rHDPE/rPET has been markedly reduced the WA and thickness swelling. Scanning electron microscope analysis of the compatibilized matrix composites confirmed the improved interfacial bonding of matrix–matrix and filler–matrix phases. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41494.