Yong, K.C., Foot, P.J.S., Morgan, H., Cook, S., Tinker, A.J. and Ahmed, Md Aris (2008) Electrically conductive epoxidised natural rubber-polyaniline dodecylbenzenesulfonate blends prepared by solution mixing. Journal of Rubber Research, 11(2), pp. 59-77. ISSN (print) 1511-1768Full text not available from this archive.
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[sup –3]S.cm[sup–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[sup–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.
|Uncontrolled Keywords:||epoxidised natural rubber (enr), polyaniline, conductive blend, epoxide level, solution mixing, electrical conductivity, ring opening, carbon-black, nitrile rubber, diene-rubber, thermoplastic elastomers, composites, pressure, strain, resistivity, parameters, behavior|
|Faculty, School or Research Centre:||Faculty of Science (until 2011) > School of Pharmacy and Chemistry|
|Depositing User:||Katrina Clifford|
|Date Deposited:||08 Jun 2009 18:10|
|Last Modified:||11 Feb 2013 16:22|
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