Journal
COLLOID AND POLYMER SCIENCE
Volume 290, Issue 17, Pages 1837-1842Publisher
SPRINGER
DOI: 10.1007/s00396-012-2804-x
Keywords
Filled polymers; Annealing; Rheology; Electric conduction
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Funding
- National Natural Science Foundation of China [51073136]
- Fundamental Research Funds for the Central Universities of China [2011QNA4031]
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Annealing-induced viscoelastic and electric conduction variations were traced by simultaneous measurement of resistance and dynamic modulus to carbon black (CB)-filled high-density polyethylene, polystyrene, and polypropylene at elevated temperatures. The resistance decay during annealing the melts is closely related to terminal relaxation of polymer chains and the temperature-mediated interfacial tension between CB and the matrix. On the other hand, a time-temperature-concentration superposition principle was disclosed to evolution of dynamic modulus for the filled melts at different temperatures and CB volume fractions. Annealing the filled melts causes a liquid-to-solid-like transition and the differences in kinetic constant for evolution of dynamic modulus among the three systems at the same condition are involved in interfacial tension.
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