期刊
FIBERS AND POLYMERS
卷 10, 期 1, 页码 83-90出版社
KOREAN FIBER SOC
DOI: 10.1007/s12221-009-0083-z
关键词
Natural fiber; Long and discontinuous polypropylene; Biocomposite; Mechanical property
资金
- Korea National Cleaner Production Center (KNCPC) [2006-A046-03]
- Korea Science and Engineering Foundation (KOSEF) [R11-2005-065]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10027991] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Institute of Industrial Technology(KITECH) [2006-A046-03] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2008-0057394] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Natural fiber reinforced polypropylene (PP) biocomposites were fabricated by blending long-and-discontinuous (LD) natural fibers (NF) with LD PP fibers. Firstly, random fiber mats were prepared by mixing NFs and PP fibers using a carding process. Then, heat and pressure were applied to the mats, such that the PP fibers dispersed in the mats melted and flowed out, resulting in the formation of consolidated sheets upon subsequent cooling. The effect of the fiber volume fraction on the mechanical properties of the bio-composites was scrutinized by carrying out tensile and flexural tests and observing the interface between the fiber and matrix. It was observed that the natural LD fiber content needs to be maintained at less than the nominal fiber fraction of 40 % by weight for the composites fabricated using the current method, which is quite low compared to that of continuous or short fiber reinforced composites. The limited fiber fraction can be explained by the void content in the biocomposites, which may be caused by the non-uniform packing or the deficiency of the matrix PP fibers.
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