Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 38, Issue 2, Pages 369-377Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2006.03.009
Keywords
strength; wettability; injection moulding; hemp
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Hemp strands and cane straw of hemp have been used as reinforcement and filler of polypropylene composites obtained by injection moulding. The aim of the work was to improve the tensile properties of hemp composites and make them more similar to those obtained with glass fibre composites. For this reason, maleated polypropylene (MAPP) was used as compatibility agent in hemp strand and hemp straw composites. MAPP decreases the hydrophobic nature of PP matrix and enhances the dispersion and the adhesion at interface between both constituents. The hydrophilic property of material's surface was determined by colloidal titration. The length and diameter of the fibre reinforcement during processing were analysed and their aspect ratio calculated. The tensile results obtained showed that the mechanical properties of hemp strand composites can amount to 80% of the mechanical properties of glass fibre composites. (c) 2006 Elsevier Ltd. All rights reserved.
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