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Title:	The role of secondary filler on fracture toughness and impact strength of HDPE/clay nanocomposites
Authors:	Anizah Kalam (UITM) Rahilah Kamarudzaman (UITM) Koay Mei Hyie (UITM) Aidah Jumahat (UITM) Noor Leha Abdul Rahman (UITM)
Keywords:	Alkali treated Hybrid nanocomposite Oil palm empty fruit bunch (OPEFB) fiber Polyethylene Polymer
Issue Date:	Aug-2017
Description:	In this study, oil palm fruit bunch fiber (OPEFB) was used as a secondary filler in HDPE/clay nanocomposites. The composites were prepared by melt compounding, containing high density polyethylene (HDPE), OPEFB fibers, Maleic anhydride grafted polyethylene (MAPE) and four different clay loading (3, 5, 7 and 10 PE nanoclay masterbatch pellets per hundred HDPE pellets). Four OPEFB sizes (180 ?m, 250 ?m, 300 ?m and 355 ?m) were added in the composites to investigate its effects on the fracture toughness and impact strength. Fracture toughness of the composites was determined according to ASTM D5045 and single edge notch bending (SENB) was employed during the test while impact tests were performed according to ASTM D256. The effects of alkali treatment were also investigated in this study. The result indicates that the fracture toughness slightly increased as clay loading increased. The highest value of fracture toughness was 0.47 and 1.06 MPa.m1/2 at 5 phr for both types of composites. The presence of OPEFB fiber as a secondary filler in the matrix indicates significant enhancement of fracture toughness up to 133%. However, its impact strength seems to deteriorate with the presence of OPEFB fiber.
News Source:	Pertanika Journals
ISSN:	0128-7680
Volume:	25
Pages:	95-104
Publisher:	Universiti Putra Malaysia Press
Appears in Collections:	Journal Content Pages/ Kandungan Halaman Jurnal

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