Rubber-Solvent Interaction Parameter (χ1,2) of NR/SBR Rubber Blend Solution in Determination of Crosslink Concentration for Vulcanized Rubber Blend

Azreen Izzati Dzulkifli; Che Mohd Som Said; Chan Chin Han; Ahmad Faiza Mohd

doi:10.4028/www.scientific.net/AMR.1134.75

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Rubber-Solvent Interaction Parameter (χ₁_,2) of NR/SBR Rubber Blend Solution in Determination of Crosslink Concentration for Vulcanized Rubber Blend
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1134Rubber-Solvent Interaction Parameter (χ1,2) of...

Rubber-Solvent Interaction Parameter (χ₁_,2) of NR/SBR Rubber Blend Solution in Determination of Crosslink Concentration for Vulcanized Rubber Blend

Abstract:

Crosslink concentration is an important property affecting the major characteristic of cured rubber. One of the important parameter to determine the crosslink concentration of a vulcanized rubber by swelling measurement is the rubber-solvent interaction parameter known as ‘kai’ value denoted as χ. For single rubber, the χ value is known however, the χ₁_,2 for rubber blends are unknown. This research concerned with the investigation to determine the χ₁_,2 for rubber blends solution (uncured rubber). Natural rubber (NR) and styrene butadiene rubber (SBR) rubber blends solution were blend at 7 different ratios of 100/0, 80/20, 70/30, 60/40, 50/50, 40/60 and 0/100 and were dissolved in toluene. The χ₁_,2 value of each rubber blends were determined based on the intrinsic viscosity measurement. Crosslink concentrations of vulcanized rubber blends obtained from the swelling measurement were then compared against the value determined from simple extension measurement (stress-relaxation method). This cross-checking was to ensure the accuracy and reliability of χ₁_,2 value for rubber blends solution.

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Periodical:

Advanced Materials Research (Volume 1134)

Pages:

75-81

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1134.75

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Online since:

December 2015

Authors:

Azreen Izzati Dzulkifli, Che Mohd Som Said, Chan Chin Han, Ahmad Faiza Mohd

Keywords:

Crosslink Concentration, Flory-Rehner Equation, Mooney-Rivlin Equation, Natural Rubber, Styrene Butadiene Rubber, Toluene

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