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According to the two-phase model theories of polymer crystallization, the degree of crystallinity of natural rubber (NR) induced to crystallize at −25 °C can be directly determined by dynamic mechanical thermal analysis (DMTA) by testing its tanδ peak areas of crystalline state and 100% amorphous state respectively. The degree of crystallinity is 86% when the induction time increases to 12 h. However,...
The dynamic mechanical properties of Eucommia ulmoides (EU) gum with different degree of cross-linking are studied systematically in this article. EU gum displays five dynamic mechanical behaviors with increasing degree of cross-linking. Before elastic critical turning point, EU gum shows two active dynamic mechanical temperature zones with rising of temperature, one is Tg zone, controlled by glass...
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