Dynamic mechanical analysis was performed using a Perkin Elmer DMA 8000 in the temperature/time scan
mode. The shape of test sample was rectangular, 25 mm. long, 10 mm. and 3 mm. thick. The dual cantilever mode
of deformation was used under the test temperature range from -110 to +100o
C with a heating rate of 5o
C min-1 and a frequency of 1 Hz. A sinusoidal strain with a frequency of 1 Hz and amplitude of 50 mm was applied to each
specimen. The storage and loss moduli, tan G, and glass transition temperature (Tg) of the rubber vulcanizates were
subsequently measured based on the test results.