Table of Contents
Journal of Materials
Volume 2015, Article ID 131957, 6 pages
Research Article

Biodegradation Study of Nanocomposites of Phenol Novolac Epoxy/Unsaturated Polyester Resin/Egg Shell Nanoparticles Using Natural Polymers

1Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345-1789, Iran
2Engineering Department, Islamic Azad University of Bushehr, Bushehr 19555-75196, Iran
3Young Researchers and Elite Club, Nourabad Mamasani Branch, Islamic Azad University, Nourabad 81746-73441, Iran
4Department of Mechanical Engineering, Islamic Azad University, Najafabad Branch, Najafabad 85141-43131, Iran

Received 14 June 2015; Revised 8 September 2015; Accepted 8 October 2015

Academic Editor: Da-Bin Liu

Copyright © 2015 S. M. Mousavi 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.


Nanocomposite materials refer to those materials whose reinforcing phase has dimensions on a scale from one to one hundred nanometers. In this study, the nanocomposite biodegradation of the phenol Novolac epoxy and the unsaturated polyester resins was investigated using the egg shell nanoparticle as bioceramic as well as starch and glycerin as natural polymers to modify their properties. The phenol Novolac epoxy resin has a good compatibility with the unsaturated polyester resin. The prepared samples with different composition of materials for specified time were buried under soil and their biodegradation was studied using FTIR and SEM. The FTIR results before and after degradation showed that the presence of the hydroxyl group increased the samples degradation. Also adding the egg shell nanoparticle to samples had a positive effect on its degradation. The SEM results with and without the egg shell nanoparticle also showed that use of the egg shell nanoparticle increases the samples degradation. Additionally, increasing the amount of starch, and glycerol and the presence of egg shell nanoparticles can increase water adsorption.