Mullins Effect and Its Reversibility for Thermoplastic Vulcanizates Based on Ethylene–Acrylic Acid Copolymer/Nitrile–Butadiene Rubber Blends

Sun, Yingtao; Yang, Linji; Liu, Feifei; Wang, Zhaobo

doi:10.1134/s0965545x20060103

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…For instance, in [16], 80% recovery was achieved when heated at 100 • C for two days. The temperature-dependent nature of the Mullins effect in thermoplastic vulcanizates was reported in [28,44] and it was reported that it could be enhanced by increasing the heat treatment temperature. High temperature makes it possible for the broken polymeric chains to regenerate, thereby reversing the softening of the material due to the Mullins effect [45].…”

Section: Introductionmentioning

confidence: 94%

Evolution of Shore Hardness under Uniaxial Tension/Compression in Body-Temperature Programmable Elastic Shape Memory Hybrids

et al. 2022

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Body-temperature programmable elastic shape memory hybrids (SMHs) have great potential for the comfortable fitting of wearable devices. Traditionally, shore hardness is commonly used in the characterization of elastic materials. In this paper, the evolution of shore hardness in body-temperature programmable elastic SMHs upon cyclic loading, and during the shape memory cycle, is systematically investigated. Upon cyclic loading, similar to the Mullins effect, significant softening appears, when the applied strain is over a certain value. On the other hand, after programming, in general, the measured hardness increases with increase in programming strain. However, for certain surfaces, the hardness decreases slightly and then increases rapidly. The underlying mechanism for this phenomenon is explained by the formation of micro-gaps between the inclusion and the matrix after programming. After heating, to melt the inclusions, all samples (both cyclically loaded and programmed) largely recover their original hardness.

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