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Rasika Prabhu, Rasmus Klitkou, Grigori A. Medvedev and James M. Caruthers A critical analysis of the effect of crosslinking on the linear viscoelastic behavior of styrene–butadiene rubber and other elastomers Journal of Polymer Science Part B: Polymer Physics 51

Article first published online: 24 JAN 2013 | DOI: 10.1002/polb.23243

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Time–temperature superposition (TTS) is used to analyze linear viscoelastic behavior of elastomer systems with varying degrees of crosslinking. Linear viscoelastic behavior in dynamic shear and tensile creep at temperatures from −30 to 70 °C is measured for SBR elastomer cured with dicumyl peroxide to crosslinking densities between 0 and 23.5×10−5 mol/cm3. To achieve the TTS of the storage, loss, and δ isotherms in the lightly crosslinked SBR, an anomalous vertical shift is required in the narrow temperature range from 10 to 30 °C.

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