Journal
POLYMER
Volume 126, Issue -, Pages 206-210Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2017.08.039
Keywords
Triple-shape memory; Dual-responsive property; Polyolefin elastomer; Stearic acid; House of cards structure
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Funding
- Natural Science Foundation of Shanghai [14ZR1442500]
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Triple-shape memory polymers (triple-SMPs) have one permanent and two temporary shapes, which enable more complex actuation than traditional dual-SMPs. This work reports a novel polyolefin elastomer (POE)/stearic acid (SA) composite with excellent triple-shape memory and dual-responsive properties. SA displays two well-separated thermal transitions when melt-blending with POE, and is capable of memorizing two temporary shapes under different temperatures. It is found that the robust house of cards structure formed by the flake-like SA crystals in the composite is the key player behind the unique behavior. In addition, the actuation of the POE/SA composite can also be triggered upon exposing the material to the appropriate chemical vapor at room temperature. The triple-shape memory and dual-responsive ability atop the simple preparation process dramatically widen the applications of this fantastic material. (C) 2017 Elsevier Ltd. All rights reserved.
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