Mechanical and thermal properties of chicken feather fiber/PLA green composites |
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| Authors: | Sha Cheng Kin-tak Lau Tao Liu Yongqing Zhao Pou-Man Lam Yansheng Yin |
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| Affiliation: | aInstitute of Materials Science and Technology, Ocean University of China, Qingdao, China;bDepartment of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China;cCentre for Excellence in Engineered Fibre Composites, University of Southern Queensland, Qld 4350, Australia;dCollege of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China |
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| Abstract: | Chicken feather fiber (CFF)/reinforced poly(lactic acid) (PLA) composites were processed using a twin-screw extruder and an injection molder. The tensile moduli of CFF/PLA composites with different CFF content (2, 5, 8 and 10 wt%) were found to be higher than that of pure PLA, and a maximum value of 4.2 GPa (16%↑) was attained with 5 wt% of CFF without causing any substantial weight increment. The morphology, evaluated by scanning electron microscopy (SEM), indicated that an uniform dispersion of CFF in the PLA matrix existed. The mechanical and thermal properties of pure PLA and CFF/PLA composites were compared using dynamic mechanical analysis (DMA), thermomechanical analysis (TMA) and thermogravimetric analysis (TGA). DMA results revealed that the storage modulus of the composites increased with respect to the pure polymer, whereas the mechanical loss factor (tan δ) decreased. The results of TGA experiments indicated that the addition of CFF enhanced the thermal stability of the composites as compared to pure PLA. The outcome obtained from this study is believed to assist the development of environmentally-friendly composites from biodegradable polymers, especially for converting agricultural waste – chicken feather into useful products. |
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| Keywords: | A Polymer-matrix composites (PMCs) B Mechanical properties B Thermal properties C Electron microscopy |
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