Abstract
The properties of electroactive shape memory composites fabricated from polyvinyl alcohol filled with short carbon fibers were studied. Short carbon fibers were used to induce the conductivity of the polyvinyl alcohol. It was shown that when the content of the filler was higher than the percolation threshold of 4%, it formed the conductive network in the polymer matrix. The conductivity increased with the increase of the filler content and electrical properties became more stable. At the same time, the glass transition temperature dropped from 68°C for neat PVA to 53°C for composites. The mechanical properties of the composites depended on the filler content non-monotonically, with a maximum at ~6%. The composites exhibited a robust shape recovery performance under the conductive conditions, and the recovery time could be controlled precisely. The study could offer the possibility for the development of electroactive shape memory composites based on polymer matrices.
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Liulan Lin, Zhou, Q. & Li, M. Thermal and Electroactive Shape Memory Behaviors of Polyvinyl alcohol/Short Carbon Fiber Composites. Polym. Sci. Ser. A 61, 913–921 (2019). https://doi.org/10.1134/S0965545X1906004X
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DOI: https://doi.org/10.1134/S0965545X1906004X