Abstract - Dependence of Tg of NBR Vulcanisates on Plasticiser Level and Crosslink Density


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 4^th Qtr 2008 Vol 11(4) 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Dependence of T_g of NBR Vulcanisates on Plasticiser Level and Crosslink Density Faridah H.A.H., A.J. Tinker and A.S. Farid This study reports the relationship between glass transition temperature (T_g ) and tributoxyethylphosphate (TBEP) concentration in acrylonitrile-butadiene rubber (NBR) gum vulcanisates. A linear relationship with weight fraction of TBEP was observed for up to 37 weight percent TBEP and the change in T_g over this range was high. However, the Fox-Hoy relationship between 1/T_g provided a better fit to the data. This observation provides a particularly reliable basis for estimating plasticiser levels through measurements of T_g. The Gordon-Taylor relationship did not provide a good basis for predicting the T_g of the plasticised rubber. A much lower dependence of T_g on crosslink density was also observed. back
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