Polymer00041 - slope of the straight line. In this study,...

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30 non-isothermal vulcanization, respectively, have been developed. For isothermal vulcanization, the model developed by (Lopez-Manchado, et al. 2003) can be used: where dα / dt is the vulcanization rate, with α, degree of curing, and t, the time. K is the specific rate constant at temperature T and m and n are both the order of reaction . For non-isothermal vulcanization, the reaction can be quantified by Kissinger’s theory (Kissinger 1957): where q is the heating rate, Tp is the exothermic peak temperature, Ea is the activation energy, R is the gas constant, and A is a pre-exponential factor. A plot of –ln(q/T 2 p ) versus 1/T p should be linear and the apparent activation energy can be obtained from the
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Unformatted text preview: slope of the straight line. In this study, non-isothermal kinetic model was used to study the vulcanization kinetics of the FC2260 nanocomposites. DSC analysis of those materials mixed by the Haake mixing head (i.e. after initial vulcanization) was performed using a Mettler-Toledo 822e DSC. Each sample was tested using four different heating rates, i.e. 8, 10, 15, and 20 o C/ min. The collected data was used to analyze vulcanization kinetics of FC2260 in the nanocomposites. 2.3.4 Other Characterizations d / dt = K(T) m (1-) n-ln(q/ T p 2 ) =E a / RT p-ln(AR/E a )...
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This note was uploaded on 08/18/2011 for the course MATSE 447 taught by Professor Colby,r during the Spring '08 term at Pennsylvania State University, University Park.

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