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http://hdl.handle.net/123456789/16100
Title: | Mechanical, interfacial, and fracture characteristics of poly (lactic acid) and Moringa oleifera fiber composites |
Authors: | Islam M.R., Isa, N. M.R. Yahaya, Beg, M.D.H. A.N. Yunus, R.M. |
Keywords: | Compression molding Extrusion molding Injection molding Moringa oleifera fiber Poly (lactic acid) |
Issue Date: | May-2017 |
Abstract: | Three different processing techniques, extrusion, injection, and compression, were followed to fabricate poly (lactic acid) (PLA) and Moringa oleifera fiber (MOF) based composites. Chopped fibers of length 3-5 mm were used for the extrusion followed by injection molding, whereas long-length fibers (~100 mm) were used for compression molding process. For compression molding, long-length fibers were spread in single and double layers. The interfacial shear strength of the composites was evaluated by fiber pull-out testing. Composites were characterized for fracture behavior and mechanical properties. Additionally, surface morphology was also observed by scanning electron microscopy, whereas crystalline properties were evaluated by X-ray diffraction analysis. Analyses revealed that compression molding with double layers of long-length fibers reinforcement showed better properties than other samples. Tensile strengths of extruded and compression processed samples (double-layered) were 75.5 and 81.1 MPa, which are approximately 33% and 44% higher respectively than neat PLA (56.5 MPa). The crack generation of PLA during applied load was observed and found eliminated for the double-layered sample processed via compression molding. It was found that compression molding with double layer can be considered as easy and less time-consuming method for composite preparation, with nearly 8 wt.% of less fiber consumption compared with extrusion/injection molding. © 2017 Wiley Periodicals, Inc. |
URI: | 10.1002/adv.21823 http://ir.unikl.edu.my/jspui/handle/123456789/16100 |
ISSN: | 07306679 |
Appears in Collections: | Journal Articles |
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Mechanical, interfacial, and fracture characteristics of poly _lactic acid_ and Moringa oleifera fiber composites.pdf | 13.14 kB | Adobe PDF | View/Open |
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