Hemmatollah Sheikhrobati - Department of Polymer Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran
Mohammad Reza Saeb - Department of Resin and Additives, Institute for Color Science and Technology, P.O.Box: ۱۶۷۶۵-۶۵۴, Tehran, Iran

Natural rubber (NR) nanocomposites are manufactured at three various contents of calcium carbonate(CA) nanofiller. To achieve better filler-matrix interaction, it was decided to choose a biofiller with porous structure which could has been employed in NR-base nanocomposites comparative with CA nanofillers. First of all, the eggshell nanofiller was chosen and then the its surface area was modified with stearic acid to ameliorate the wetability toward NR matrix. Afterwards, the wetability of both sorts of nanofillers has been studied through several tests. The results are representive of this fact that employing eggshell biofiller can ultimately affect both the mechanical and morphological traits of NR nanocomposites as well as CA-based nanocomposites does. Scanning electron microscopy was utilized on the prepared samples as an indication of nanofiller distribution and dispersion within the elastomeric matrix.

Eggshell bio-filler, calcium carbonate, natural rubber