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Journal of Polymer Research

, 26:54 | Cite as

Tailoring the performance of bamboo filler reinforced epoxy composite: insights into fracture properties and fracture mechanism

  • Rahul Kumar
  • Kaushik Kumar
  • Sumit BhowmikEmail author
  • Gautam Sarkhel
ORIGINAL PAPER
  • 20 Downloads

Abstract

Due to the graded micro-structure and high specific strength-stiffness, bamboo micro fillers are systematically utilized in reinforcing different thermoset and thermoplastic polymers as replacement of conventional glass and carbon fillers. In this work, micro-size bamboo particle fillers are reinforced in ‘specific grade’ thermoset epoxy matrix and its fracture properties has been evaluated by following linear elastic fracture mechanics. To enhance its compatibility with the polymer matrix and to reduce the hydrophilicity, the bamboo micro fillers are surface modified through alkaline treatment. The extent of surface modification and removal of lower weight polymers from filler surface are examined and established by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction analysis and thermogravimetric analysis. The fracture properties of bamboo-epoxy composite material are observed to be increasing with the addition of bamboo fillers and the maximum value of fracture toughness is 0.678 MPa.m0.5 which is 32% higher than the same for neat epoxy samples. In addition, the mechanisms of notch initiated fracture propagation have also been explained for the understanding of stress singularity present at the preexisted crack tip.

Keywords

Bamboo Particle filler Epoxy matrix Fracture toughness Binary phase 

Notes

Acknowledgements

The authors would like to acknowledge SAIF-IIT Bombay and SAIC-Gauhati University for providing necessary technical assistances for FTIR and XRD. The authors also would like to thank Machine element laboratory and Material testing laboratory, MED, NIT Silchar for giving essential research facilities. The first author gratefully acknowledges the Ministry of Human Resource Development (MHRD), GOI for fellowship during his PhD work.

Compliance with ethical standards

Conflict of interest

The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Institute of TechnologySilcharIndia
  2. 2.Department of Mechanical EngineeringBirla Institute of TechnologyMesraIndia
  3. 3.Department of Chemical Engineering and TechnologyBirla Institute of TechnologyMesraIndia

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