Static and Dynamic Mechanical Analysis of Coir Fiber/Montmorillonite Nanoclay-Filled Novolac/Epoxy Hybrid Nanocomposites

  • Sudhir Kumar SawEmail author
Part of the Advanced Structured Materials book series (STRUCTMAT, volume 75)


A simple method for the preparation of novel nanocomposites involving different weight ratios of blends of epoxy novolac (ENR) and diglycidyl ether of bisphenol A (DGEBA) resin, natural coir fiber, and organically modified montmorillonite (OMMT) nanoclay is described. It was found that on blending ENR with DGEBA, the storage modulus at room temperature are enhanced by about 100 % or more in the case of 50 and 65 % ENR-containing matrices; whereas, the enhancement in the case of 20 and 35 % ENR-containing matrices is only 50 % that of the pure matrix. It was also observed that the tan δ peak heights of the composite containing 50 and 65 % ENR are closer to that of 35 % ENR-containing composite. The plausible explanation is made on the basis of experimental findings of static and dynamic mechanical analysis (DMA) of ENR and DGEBA resin blends. X-ray diffraction (XRD) studies and Fourier transform infrared (FTIR) spectroscopy was used to obtain information on the modification of nanoclay and also thermal stability of various nanocomposites were determined from thermo gravimetric analyses. DMA showed that the modification of the clay strongly influences the stiffness and glass transition temperature (T g) of the nanocomposites. It is possible to manufacture coir composites with increased stiffness without sacrificing their ductility.


Coir fibers Epoxy resin Composite materials Mechanical properties Fiber-matrix interaction Synergistic effect 



I would like to thank Central Instrumental Facility (CIF) of Birla Institute of Technology, Mesra, Ranchi, India for providing equipment access.


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Copyright information

© Springer India 2015

Authors and Affiliations

  1. 1.Central Instrumentation FacilityBirla Institute of TechnologyRanchiIndia

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