Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 46, Issue -, Pages 89-95Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2012.10.014
Keywords
Polymer-matrix composites; Mechanical properties; Thermal properties; Surface treatments
Funding
- Ministry of Science and Technology (MOSTI) of Malaysia
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This work investigates the effects of the binary modifying agents-organosolv lignin and acrylic acid, on the mechanical and thermal properties of chitosan-filled polypropylene (PP) composites. We analyse the mechanical and the thermal properties of the composites by means of ASTM D 638-91, ASTM 0256, thermogravimetry analysis (TGA) and differential scanning calorimety (DSC). Tensile strength of the composites decreases upon the addition of chitosan, but Young's modulus improves. Impact strength is found to increase with the maximum value at 30 php. The chemical modifications do not alter the stress strain character or the thermal degradation mechanism of the composites considerably; however the results of this study show that the treated composites are found to have better mechanical and thermal properties than untreated composites. Furthermore, the obtained results are comparable to results from previous work. This outcome implies that organosolv lignin could be a potential reagent to partially replace its synthetic counterpart. (C) 2012 Elsevier Ltd. All rights reserved.
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