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http://dx.doi.org/10.17702/jai.2012.13.3.121

Effect of Bamboo Fiber Grinding on the Mechanical, Thermal, Impact, and Water Absorption Properties of Bamboo/Poly(lactic acid) Biocomposites  

Cho, Yong Bum (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Cho, Donghwan (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Adhesion and Interface / v.13, no.3, 2012 , pp. 121-130 More about this Journal
Abstract
In the present study, bamboo/PLA biocomposites through injection molding process using extruded bamboo/PLA pellets with the fiber contents of 30, 40, and 50 wt% according to the presence and absence of bamboo fiber grinding, respectively, were fabricated and their mechanical, thermal, impact, and water absorption properties were explored. Compared to neat PLA, the flexural modulus, tensile modulus, storage modulus and impact strength of bamboo/PLA biocomposites were considerably increased. In particular, the moduli were further increased by introducing the ground bamboo fibers. In addition, use of the ground bamboo fibers was effective to enhance the long-term water resistance of the biocomposites. The heat treatment temperature of neat PLA was improved by 16% by incorporating the bamboo fibers and the fiber grinding effect was slight. The incorporation of the ground bamboo fibers to PLA did not influence the tensile strength and impact toughness of bamboo/PLA biocomposites.
Keywords
bamboo/poly(lactic acid) biocomposites; ground bamboo fibers; mechanical properties; thermal properties; impact strength; water absorption;
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