Journal of Polymers and the Environment

, Volume 26, Issue 5, pp 1962–1968 | Cite as

Chemically Functionalized Plant Fibers and Carbon Nanotubes for High Compatibility and Reinforcement in Polylactic Acid (PLA) Composite

  • Po-Yuan Chen
  • Hong-Yuan Lian
  • Yeng-Fong Shih
  • Su-Mei Chen-Wei
Original Paper


In this study, surface modification is used to improve the compatibility of Kenaf fibers (KFs) and multi-walled carbon nanotubes (MWCNTs) in a polylactic acid (PLA) matrix, as well as to enhance the mechanical properties. Through the use of a silane coupling agent, the KF is grafted with functional groups to generate a chemical bond with the PLA; the modified KF shows high compatibility in the PLA matrix. Compared to the bare PLA, the optimal KF/MWCNT/PLA composite (PC1F30-OX) shows increases of 58% in tensile strength, and 113% in impact strength. A small addition of MWCNTs (1 wt%) dramatically improves the antistatic ability by lowering the surface resistance to 3.47 GΩ. With the addition of hydrophilic KF into the PLA, the composite becomes much more environmentally friendly, and the biodegradation rate can be controlled by the amount of KF added. The addition of hydrophilic KF allowed the composite to accommodate more enzyme to hasten the biodegradation; almost complete decomposition occurred after 11 weeks.


Polylactic acid Cellulose fibers Multi-walled carbon nanotubes Composite 


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Po-Yuan Chen
    • 1
  • Hong-Yuan Lian
    • 2
  • Yeng-Fong Shih
    • 1
  • Su-Mei Chen-Wei
    • 2
  1. 1.Department of Applied ChemistryChaoyang University of TechnologyTaichungTaiwan, ROC
  2. 2.Department of Advanced Coating, Division of Applied Chemistry, Material and Chemical Research LaboratoriesIndustrial Technology Research InstituteHsinchuTaiwan, ROC

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