Abstract
Crosslinking of elastomers using electron beam radiation has several advantages over conventional method. It is accomplished much faster, in a more environmental friendly approach and in a much simpler manner. When fast moving electrons that are generated from electron accelerators are targeted on a polymer matrix, they primarily crosslink the polymer. However, in the process, some chain scission may also occur. In this work, a high vinyl (~50%) styrene–butadiene–styrene (S–B–S) block copolymer was used as the base polymer. Radiation doses were varied from 25 to 300 kGy. A detailed investigation was made to understand the effect of electron beam radiation on the rheological properties such as storage modulus, loss modulus, storage viscosity and complex viscosity of the block copolymer under strain and frequency sweeps performed in a Rubber Process Analyzer (RPA). Recyclability of the crosslinked S–B–S polymer was also explored by RPA and mechanical studies.
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Acknowledgments
The authors wish to acknowledge Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), Mumbai, India, for financially supporting this research project and, Mr. Xavier Muyldermans, Kraton Polymers for his technical support.
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Datta, S., Naskar, K., Bhardwaj, Y.K. et al. A study on dynamic rheological characterisation of electron beam crosslinked high vinyl styrene butadiene styrene block copolymer. Polym. Bull. 66, 637–647 (2011). https://doi.org/10.1007/s00289-010-0359-x
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DOI: https://doi.org/10.1007/s00289-010-0359-x