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Enhanced ductility and tensile properties of hybrid montmorillonite/cellulose nanowhiskers reinforced polylactic acid nanocomposites

Arjmandi, Reza and Hassan, Azman and Eichhorn, Stephen J. and Mohamad Haafiz, M. K. and Zakaria, Zainoha and Tanjung, Faisal Amri (2015) Enhanced ductility and tensile properties of hybrid montmorillonite/cellulose nanowhiskers reinforced polylactic acid nanocomposites. Journal of Materials Science, 50 (8). pp. 3118-3130. ISSN 0022-2461

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Official URL: http://dx.doi.org/10.1007/s10853-015-8873-8

Abstract

Montmorillonite (MMT)/cellulose nanowhiskers (CNW) reinforced polylactic acid (PLA) hybrid nanocomposites were prepared by solution casting. CNW were isolated from microcrystalline cellulose using a chemical swelling method. An initial study showed that the optimum MMT content, for mechanical properties, in a PLA/MMT nanocomposite is five parts per hundred parts of polymer (phr). Various amounts of CNW were added to the optimum formulation of PLA/MMT to produce PLA/ MMT/CNW hybrid nanocomposites. FT-IR analysis indicated the formation of some polar interactions, resulting in enhanced tensile properties of the hybrid nanocomposites. The highest tensile strength for the hybrid nanocomposites was obtained for a 1 phr CNW content. Young’s modulus was also found to increase with an increasing CNW content. Interestingly, the strain to failure (or ductility) of the hybrid nanocomposites increased significantly from ~10 to ~90% with the addition of 1 phr CNW. This increase in ductility was proposed to be due to the nucleation of crazes and the formation of shear bands in the PLA.

Item Type:Article
Uncontrolled Keywords:nanowhiskers, polyesters, reinforcement, tensile strength
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:55011
Deposited By: Fazli Masari
Deposited On:09 Aug 2016 01:52
Last Modified:15 Feb 2017 07:24

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