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

被引:64
作者
Arjmandi, Reza [1 ]
Hassan, Azman [1 ]
Eichhorn, Stephen J. [2 ]
Haafiz, M. K. Mohamad [3 ]
Zakaria, Zainoha [4 ]
Tanjung, Faisal Amri [1 ]
机构
[1] Univ Teknol Malaysia, Fac Chem Engn, Dept Polymer Engn, Johor Baharu 81310, Johor, Malaysia
[2] Univ Exeter, Coll Engn Maths & Phys Sci, Exeter EX4 4QL, Devon, England
[3] Univ Sains Malaysia, Sch Ind Technol, George Town 11800, Malaysia
[4] Univ Teknol Malaysia, Fac Sci, Johor Baharu 81310, Johor, Malaysia
关键词
POLY(LACTIC ACID); CELLULOSE WHISKERS; MICROCRYSTALLINE CELLULOSE; SILICATE NANOCOMPOSITES; TOUGHENING MECHANISMS; THERMAL-PROPERTIES; LAYERED SILICATE; COMPOSITES; FILMS; MORPHOLOGY;
D O I
10.1007/s10853-015-8873-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 similar to 10 to similar 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.
引用
收藏
页码:3118 / 3130
页数:13
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