Advanced Composite Materials

The Korean Society for Composite Materials (한국복합재료학회)
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Property improvement of natural fiber-reinforced green composites by water treatment

  • Cho, Dong-Hwan (Polymer/Bio-Composites Research Lab, Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Seo, Jeong-Min (Polymer/Bio-Composites Research Lab, Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Hyun-Seok (Polymer/Bio-Composites Research Lab, Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Cho, Chae-Wook (Polymer/Bio-Composites Research Lab, Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Han, Seong-Ok (Functional Materials Research Center, Korea Institute of Energy Research) ;
  • Park, Won-Ho (Department of Textile Engineering, Chungnam National University)
  • Published : 2007.12.01
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Abstract

In the present study, natural fibers (jute, kenaf and henequen) reinforced thermoplastic (poly(lactic acid) and polypropylene) and thermosetting (unsaturated polyester) matrix composites were well fabricated by a compression molding technique using all chopped natural fibers of about 10 mm long, respectively. Prior to green composite fabrication, natural fiber bundles were surface-treated with tap water by static soaking and dynamic ultrasonication methods, respectively. The interfacial shear strength, flexural properties, and dynamic mechanical properties of each green composite system were investigated by means of single fiber microbonding test, 3-point flexural test, and dynamic mechanical analysis, respectively. The result indicated that the properties of the polymeric resins were significantly improved by incorporating the natural fibers into the resin matrix and also the properties of untreated green composites were further improved by the water treatment done to the natural fibers used. Also, the property improvement of natural fiber-reinforced green composites strongly depended on the treatment method. The interfacial and mechanical results agreed with each other.

Keywords

References

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