Table of Contents
Indian Journal of Materials Science
Volume 2015, Article ID 658064, 6 pages
http://dx.doi.org/10.1155/2015/658064
Research Article

Effect of Fiber Treatment and Fiber Loading on Mechanical Properties of Luffa-Resorcinol Composites

1Depatment of Physics, Orissa University of Agriculture and Technology, Bhubaneswar, Odisha 751 003, India
2Department of Education in Science and Mathematics, National Council of Educational Research and Training, Bhubaneswar, Odisha 751022, India
3Department of Chemistry, Salipur College, Salipur, Odisha 754 202, India

Received 8 January 2015; Accepted 31 January 2015

Academic Editor: Marino Lavorgna

Copyright © 2015 Chhatrapati Parida et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Tensile and compressive behaviour of resorcinol-formaldehyde (RF) matrix and its composites reinforced with fibers of Luffa cylindrica (LC) have been studied. LC fibers were subjected to chemical treatments such as alkali activation by NaOH followed by bleaching and acid hydrolysis in order to improve fiber-matrix adhesion. Both treated and untreated LC fibers are modified with calcium phosphate. The presence of hydroxy apatite, a polymorph of calcium phosphate and a major constituent of vertebrate bone and teeth, was confirmed from XRD peak of treated LC fiber. XRD analysis of the treated LC fiber has confirmed the crystalline nature of the chemically treated LC fiber by its crystallinity index. The effects of fiber loading of chemically treated and untreated LC fiber on ultimate stress, yield strength, breaking stress, and modulus of the composites were analyzed. The tensile and compressive modulus of the composites were increased with incorporation of both treated and untreated LC fibers into the RF matrix. The modulus of composites with treated LC fiber was enhanced compared to that of the untreated fiber composites. Furthermore the values of ultimate stress, yield stress, and breaking stress were increased with the incorporation of treated LC fiber in the composites.