Study on grafting of different types of acrylic monomers onto natural rubber by γ-rays |
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| Institution: | 1. Nuclear and Radiation Chemistry Division, Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission, P.O. Box 3787, Dhaka, Bangladesh;2. Department of Chemistry, Jahangirnagar University, Savar, Dhaka, Bangladesh;1. Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, Cidade Universitaria, 05508-000 São Paulo, Brazil;2. Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México DF 04510, Mexico;3. Universida de Federal de São Paulo – UNIFESP, Rua São Nicolau, 210, Centro, 09913-030 Diadema, SP, Brazil;1. Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;2. Green Materials for Industrial Application Research Unit, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;3. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand |
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| Abstract: | A comparative study of various acrylic monomers for grafting onto natural rubber was done. The stability of natural rubber latex (NRL) against coagulum with monomer, mechanical properties of grafted rubbers and percent of grafting were investigated. The NRL with monomers, methylacrylate (MA), ethylacrylate (EA) and n-butylacrylate (n-BA), is unstable but it is stable with methyl methacrylate (MMA), n-butyl methacrylate (BMA) and cyclohexyl methacrylate (CHMA). The mechanical properties and degree of grafting attained a maximum at a total radiation dose of 4 kGy. The values of tensile properties of MMA and CHMA grafted rubbers are almost similar, and higher than those of BMA grafted rubbers. On the other hand, the degree of grafting for CHMA is higher than those of MMA and BMA grafted rubbers. The infrared (IR) spectra of monomer grafted natural rubber were also studied. |
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