Reinforcement of natural rubber/high density polyethylene blends with electron beam irradiated liquid natural rubber-coated rice husk |
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| Authors: | E.L. Chong Ishak Ahmad H.M. Dahlan Ibrahim Abdullah |
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| Affiliation: | 1. Department of Pharmaceutical Technology, University of Szeged, Eötvös utca 6., H-6720 Szeged, Hungary;2. Richter Gedeon Ltd., Gyömr?i út 17-19., H-1103 Budapest, Hungary;3. Laboratory of Nuclear Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest 112, Hungary;4. Department of Applied Informatics, University of Szeged, Boldogasszony sgt. 6., H-6720 Szeged, Hungary |
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| Abstract: | Coating of rice husk (RH) surface with liquid natural rubber (LNR) and exposure to electron beam irradiation in air were studied. FTIR analysis on the LNR-coated RH (RHR) exposed to electron beam (EB) showed a decrease in the double bonds and an increase in hydroxyl and hydrogen bonded carbonyl groups arising from the chemical interaction between the active groups on RH surface with LNR. The scanning electron micrograph showed that the LNR formed a coating on the RH particles which transformed to a fine and clear fibrous layer at 20 kGy irradiation. The LNR film appeared as patches at 50 kGy irradiation due to degradation of rubber. Composites of natural rubber (NR)/high density polyethylene (HDPE)/RHR showed an optimum at 20–30 kGy dosage with the maximum stress, tensile modulus and impact strength of 6.5, 79 and 13.2 kJ/m2, respectively. The interfacial interaction between the modified RH and TPNR matrix had improved on exposure of RHR to e-beam at 20–30 kGy dosage. |
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