Effect of electron beam irradiation on dynamic mechanical,thermal and morphological properties of LLDPE and PDMS rubber blends |
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| Authors: | Radhashyam Giri Kinsuk Naskar Golok B Nando |
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| Affiliation: | 1. Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden;2. Akzo Nobel Pulp and Performance Chemicals AB, 445 80 Bohus, Sweden;1. College of Science, China Three Gorges University, Yichang, Hubei 443002, China;2. College of Electrical Engineering & New Energy, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002, China;3. College of Materials and Chemical Engineering, China Three Gorges University, Yichang Hubei 443002, China;4. Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO 64110, USA;1. Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Spain;2. School of Engineering, Cardiff University, UK |
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| Abstract: | The effect of electron beam irradiation on the blends of linear low-density polyethylene (LLDPE) and poly dimethyl siloxane rubber (PDMS) prepared over a wide range of compositions starting from 70:30 to 30:70 (LLDPE: PDMS) by varying the radiation doses from 50 to 300 kGy has been studied. The dynamic modulii and dielectric strength of the blends increase on irradiation at 100 kGy as compared to that for the unirradiated blends. Degree of crystallinity and melting behaviour remain unchanged upon irradiation upto a dose of 100 kGy, beyond which it decreases. Thermal stability increases with increase in the proportion of PDMS rubber in the blend as well as on irradiation at 100 kGy. The phase morphology of the blends examined under the SEM exhibit two phase morphology before electron beam irradiation, whereas single phase morphology is observed after electron beam irradiation due to intra- as well as inter-molecular crosslinking leading to a miscible system. |
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