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Structural, Dynamic Mechanical, Mechanical and Thermal Analysis of Cis-Polyisoprene and Styrene-Butadiene Rubber Blends

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Elastomeric blends of cis-polyisoprene (CPI) and styrene-butadiene-rubber (SBR) at different volume concentrations have been prepared by solution casting. The prepared blends have been characterized through X-ray diffraction. Experimental measurements on dynamic mechanical and mechanical properties have been done through dynamical mechanical analyzer (DMA) while thermal conductivity has been measured using thermal constant analyzer (TCA). Results show that blends are immiscible having two separate glass transition temperatures. Tensile strength is lower for all the blends as compared to pure materials whereas toughness is highest for the blend CPI-75/SBR-25. Also, the value of thermal conductivity of CPI improves with the enhancement of SBR concentration in the blend.
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Keywords: Blends; Crosslink Density; DMA; Glass Transition; Storage Modulus; Thermal Conductivity

Document Type: Research Article

Affiliations: Semiconductor and Polymer Science Laboratory, Department of Physics, University of Rajasthan, Jaipur 302055, India

Publication date: November 1, 2016

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