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Mechanical and thermal properties of polypropylene/recycled polyethylene terephthalate/chopped rice husk composites
Author(s) -
ErshadLangroudi Amir,
JafarzadehDogouri Fatemeh,
RazaviNouri Mohammad,
Oromiehie Abdulrasoul
Publication year - 2008
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.27729
Subject(s) - materials science , composite material , polypropylene , ultimate tensile strength , polyethylene terephthalate , flexural strength , izod impact strength test , scanning electron microscope , composite number , maleic anhydride , husk , polyethylene , wood flour , flexural modulus , dynamic mechanical analysis , plastics extrusion , differential scanning calorimetry , polymer , copolymer , botany , thermodynamics , physics , biology
The various ratios of recycled polyethylene terephthalate (rPET) into polypropylene (PP) filled with 40 parts chopped rice husk per hundred part of polymer have been studied. Composites were prepared using a corotating twin screw extruder at temperature zones of 165–215, well below 250°C (rPET mp temperature) and characterized by mechanical and thermal properties. To improve the compatibility between different components, PP grafted with maleic anhydride was added as a coupling agent in all the compositions studied. The results showed that the addition of rPET improved the tensile and flexural modulus and impact strength of the composite while reducing its tensile and flexural strength. The scanning electron microscopy micrographs of samples in the injection direction showed that some particle shaped rPET inside the composites appear as drawn fibrils and some appear as plates. Differential scanning calorimetric studies showed that the addition of rPET particles to the composites decrease the PP crystallization temperatures. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008