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最新成果發表在流變學頂級期刊Journal of Rheology上
來源:劉憲虎教授個人網站 發布日期:2017-06-08

In this work, the creep-recovery behavior of immiscible poly (styrene)/poly (methyl methacrylate) blends and their pure components in the molten state were systematically investigated. A stationary plateau in the recoverable compliance of pure components is observed. Unexpectedly, for immisciblepolymer blends, the recoverable compliances show different phenomena. For blends with a fine co-continuous morphology, the recoverable compliances exhibit a one-reversal phenomenon, whereas a two-reversal phenomenon is found in the blends with a sea-island morphology. Moreover, these reversal behaviors become less pronounced with decreasing temperature, increasingcreep stress, increasing annealing time, or incorporation of nanoparticles.Three competitive effects, i.e., the recovery of oriented polymer matrix, the interfacial tension which drives the deformed droplets to their equilibrium shape, and the phase coarsening process, are used here to explain the different behaviors.

文章鏈接:

http://sor.scitation.org/doi/full/10.1122/1.4985005?aemail=author

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