Addition of Transition Metals to Improve Physico-Mechanical Properties of Radiation-Vulcanized Natural Rubber Latex Films |
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| Authors: | M W Rahman M M Hossain M J Alam N C Dafader M E Haque |
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| Institution: | 1. Department of Chemical Engineering , Jessore Science and Technology University , Jessore , Bangladesh engr_wasik54@yahoo.com;3. Department of Dyeing and Washing , Purbani Yarn Dyeing Ltd. , Dhaka , Bangladesh;4. Department of Chemical Engineering , Jessore Science and Technology University , Jessore , Bangladesh;5. Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Savar , Dhaka , Bangladesh |
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| Abstract: | The effect of transition metals as a promoter of physico-mechanical properties of radiation-vulcanized natural rubber latex (RVNRL) films was investigated. RVNRL films were prepared by the addition of transition metals (Fe, Mn, etc.) of different concentrations (0–30 ppm) in natural rubber (NR) latex and irradiated with various radiation doses (0–20 kGy). The concentrations of metal ions and radiation doses were optimized and found to be 20 ppm and 12 kGy, respectively. Tensile strength, tear strength, and cross-linking density of the irradiated rubber films were increased with increasing concentration of metal ions as well as radiation doses. The mechanical properties of the films were enhanced by approximately 20% at the optimum conditions. In contrast, elongation at break, permanent set, and swelling ratio of the films were decreased under the same conditions. The comparative effect of metal ions can be explained by Fajan's rules, reported in this article. |
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| Keywords: | Natural rubber latex Radiation Transition metals Vulcanization |
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