Abstract - Electrically Conductive Epoxidised Natural Rubber-polyaniline dodecylbenzenesulfonate Blends Prepared by Solution Mixing


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 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 Electrically Conductive Epoxidised Natural Rubber-polyaniline dodecylbenzenesulfonate Blends Prepared by Solution Mixing K.C. Yong, P.J.S. Foot, H. Morgan, S. Cook, A.J. Tinker and Md Aris Ahmad Epoxidised natural rubber (ENR) and polyaniline dodecylbenzenesulfonate (PAni.DBSA) were predicted to be miscible, on the basis of simple solubility parameter calculations. Blends with electrical conductivities up to 10^–3S.cm^–1 were prepared for the first time by solution mixing. The lowest estimated electrical conductivity percolation threshold for these blends was 2.9 wt% or 2.5 volume% of added PAni.DBSA. NMR spectroscopy showed that the epoxide level of the host, ENR decreased with increasing PAni.DBSA loading (due to the sensitive nature of ENR to acidic conditions). This decrease was a direct sign of ring opening in the ENR molecular structure. The ring opening of ENR was also identified indirectly through the increasing absorption value of FT-IR peaks in the region of 3390 cm^–1 and through the trends observed by differential scanning calorimetry (DSC). Electrical conductivity measurement and morphology studies [by optical microscopy and transmission electron microscopy (TEM)] revealed that the ring opening did not affect the electrical properties of the blends. back
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