Journal of Polymers and the Environment

, Volume 14, Issue 4, pp 347–352 | Cite as

Fungal-modification of Natural Fibers: A Novel Method of Treating Natural Fibers for Composite Reinforcement

  • Deepaksh Gulati
  • Mohini SainEmail author
Original Paper


Growing interest in green products has provided fresh impetus to the research in the field of renewable materials. Plant fibers are not only renewable but also light in weight and low in cost. Polymer composites manufactured using them find applications in diverse fields such as automobiles, housing, and furniture. However, their hydrophilic nature and inadequate adhesion with matrix limits their use in high performance applications. In this study, a novel method for improving adhesion characteristics of natural fibers has been developed. This method is carried out by treating hemp fibers with a fungus: Ophiostoma ulmi, obtained from elm tree infected with Dutch elm disease. Treated fibers showed improved acid–base characteristics and resistance to moisture. Improved acid–base interactions between fiber and resin are expected to improve the interfacial adhesion, whereas improved moisture resistance would benefit the durability of the composites. Finally, composites were prepared using untreated/treated fibers and unsaturated polyester resin. Composites with treated fibers showed slightly better mechanical properties, which is most probably due to improved interfacial adhesion.


Natural fiber Composite Interface Acid–base characteristics Inverse gas chromatography 



Authors would like to thank Auto21 Network of Centers of Excellence for providing the financial support to carry out this project. We are also grateful to Hempline Inc., Canada and Dr. M. Dumas of The Great Lake forest Center, Canada Forest Service for providing hemp fibers and isolates of O. ulmi respectively. Valuable advice of Dr. Robart Zang is deeply appreciated.


  1. 1.
    ‘Green’ door-trim panels use PP & natural fibers (November 2000) Plastics Technology, 27Google Scholar
  2. 2.
    Broge JL (September 2000), Automotive Engineering InternationalGoogle Scholar
  3. 3.
    Schuh TG, Renewable materials for automotive applications, Daimler-Chrysler AG, StuttgartGoogle Scholar
  4. 4.
    Liu WJ, Mohanty AK, Askeland P, Drzal LT, Misra M (2004) Polymer 45:7589CrossRefGoogle Scholar
  5. 5.
    Bledzki AK, Reihmane S, Gassan J (1996) J Appl Polym Sci 59:1329CrossRefGoogle Scholar
  6. 6.
    Gassan J, Gutowski VS (2000) Compos Sci Technol 60:2857CrossRefGoogle Scholar
  7. 7.
    Mwaikambo LY, Ansell MP (1999) Angew Makromol Chem 272:108CrossRefGoogle Scholar
  8. 8.
    Buschle-Diller G, Fanter C, Loth F (1999) Text Res J 69:244CrossRefGoogle Scholar
  9. 9.
    Zhang Y, Lu X, Pizzi A, Delmotte L (2003) Holz Roh Werkst 61:49CrossRefGoogle Scholar
  10. 10.
    Kenealey W, Klungness J, Tshabalala M, Horn E, Akhtar M, Gleisner R, Buschle-Diller G (2004) In: Saha BC, Hayashi K (eds), ACS Symposium Series 889, pp 126–138Google Scholar
  11. 11.
    Fowkes FM, Mostafa MA (1978) Ind Eng Chem Prod Res Dev 17:3CrossRefGoogle Scholar
  12. 12.
    Dwight DW, Fowkes FM, Cole DA, Kulp MJ, Sabat PJ, Salvati L, Huang TC (1990) J Adhes Sci Technol 4:619Google Scholar
  13. 13.
    Park SJ, Donnet JB (1998) J Colloid Interface Sci 206:29CrossRefGoogle Scholar
  14. 14.
    Mittal KL (2000) Acid–Base interactions: relevance to adhesion science and technology, vol 2, VSP BVGoogle Scholar
  15. 15.
    Shultz J, Laville L, Martin C (1987) J Adhesion 23:45Google Scholar
  16. 16.
    Flour CS, Papirer E (1983) J Colloid Interface Sci 91:69CrossRefGoogle Scholar
  17. 17.
    Sawyer DT, Brookman DJ (1968) J Anal Chem 40:1847CrossRefGoogle Scholar
  18. 18.
    Sawyer DT, Brookman DJ (1968) J Anal Chem 40:106CrossRefGoogle Scholar
  19. 19.
    Panzer U, Schreiber HP (1992) Macromolecules 25:3633CrossRefGoogle Scholar
  20. 20.
    Fowkes FM (1964) Ind Eng Chem Res 56:40Google Scholar
  21. 21.
    St-Flour C, Papirer E (1982) Ind Eng Chem Prod Res Dev 21:666CrossRefGoogle Scholar
  22. 22.
    Guttmann V (1983) The donor–acceptor approach to molecular interactions. Plenum Press, New YorkGoogle Scholar
  23. 23.
    Rouison D, Sain M, Couturier M (2004) Compos Sci Technol 64:629CrossRefGoogle Scholar
  24. 24.
    Chand N, Verma S, Khazanchi AC (1989) J Mater Sci Lett 8:1307CrossRefGoogle Scholar
  25. 25.
    Gulati D, Sain M (2006) Polym Eng Sci. 46:269Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Centre for Biocomposites and Biomaterials ProcessingUniversity of TorontoTorontoCanada
  2. 2.Faculty of ForestryTorontoCanada

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