The Effect of Curing Parameters on the Mechanical Properties of Styrene-NR Elastomers Containing Natural Rubber-Graft- Polystyrene

Authors

  • Tarinee Nampitch Department of Physico-Chemical Processing Technology, Faculty of Agro-Industry, Kasetsart University. Bangkok 10900, Thailand.
  • Polchit Buakaew Rubber Research Institute, Department of Agriculture, Ministry of Agriculture and Co-operative, Thailand.

Keywords:

natural rubber, curing parameters, vulcanization, graft copolymerization, synthesis

Abstract

The copolymerization of styrene on natural rubber latex was prepared by an emulsion polymerization using potassium persulfate and sodium laurylsulfate as an initiator and emulsifier, respectively. The vulcanization characteristics of styrene-NR elastomers were studied using moving die
rheometer. The effect of vulcanization on styrene-NR elastomer containing natural rubber-graftpolystyrene was investigated in accelerated-sulphur curing system containing 2.0, 2.5, 3.0, 3.5 phr of sulphur with various temperatures ranging from 130 oC to 160 oC. Increase of tensile strength resulted from an increase of the crosslink density of vulcanization when compared to uncured sample. Furthermore, the accelerating action of temperature in curing system could be confirmed by increase of curing rate index and rate constant. The value of activation energy of the cure reaction could be calculated as 72.278 kJ/mol. 

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Published

2006-12-30

How to Cite

Tarinee Nampitch, and Polchit Buakaew. 2006. “The Effect of Curing Parameters on the Mechanical Properties of Styrene-NR Elastomers Containing Natural Rubber-Graft- Polystyrene”. Agriculture and Natural Resources 40 (6 (Suppl.). Bangkok, Thailand:7-16. https://li01.tci-thaijo.org/index.php/anres/article/view/244010.

Issue

Vol. 40 No. 6 (Suppl.) (2006): November-December

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.