Effect of Defatted Rice Bran, Calcium Carbonate and Clay on Properties of Cellular Natural Rubber

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Published: Dec 31, 2016
DOI: https://doi.org/10.14456/sustj.2016.12
Keywords:
cellular natural rubber defatted rice bran CaCO3 clay blowing agent

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Darinya Moonchai
Program in Rubber and Polymer Technology, Faculty of Engineering and Agro-Industry, Maejo University, Thailand. Corresponding author's e-mail: darinyamoonchai@gmail.com
Pattaporn Juntamui
Program in Rubber and Polymer Technology, Faculty of Engineering and Agro-Industry, Maejo University, Thailand.
Rungtiwa Ruankum
Program in Rubber and Polymer Technology, Faculty of Engineering and Agro-Industry, Maejo University, Thailand.

Abstract

The effects of defatted rice bran (DRB) as a filler for cellular natural rubber (NR) vulcanizate on its cell morphology, water absorption and mechanical properties were investigated. The properties of the DRB-filled cellular NR vulcanizate were also compared with clay-filled and CaCO3-filled cellular NR vulcanizates at similar loading level (30 parts per hundred of rubber). Scanning electron micrographs revealed that the greater cell size was observed when cellular NR vulcanizates were filled with all types of filler. The DRB-filled cellular NR vulcanizate exhibited better and more uniform dispersion of cellular cell structure as compared to CaCO3-filled and Clay-filled cellular NR vulcanizates.Moreover,the DRB-filled cellular NR vulcanizate gave the highest water absorption value, tensile strength and 100%modulus as compared to CaCO3-filled and Clay-filled cellular NR vulcanizates. The elongation at break of DRB-filled cellular NR vulcanizate was found to be comparable to that of CaCO3-filled cellular NR vulcanizate. However, the cellular NR vulcanizate filled with DRB showed the lowest hardness value.According to these observations, DRB can potentially be used as acheap and more environment-friendly natural filler for cellular natural rubber.

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How to Cite
Moonchai, D., Juntamui, P., & Ruankum, R. (2016). Effect of Defatted Rice Bran, Calcium Carbonate and Clay on Properties of Cellular Natural Rubber. Science, Engineering and Health Studies, 10(4), 10–14. https://doi.org/10.14456/sustj.2016.12
Issue
Volume 10, Number 4 Special issue (December), 2016
Section
Research Articles

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