Study of electroactive shape memory polyurethane–carbon nanotube hybrids

Lee, Hsu-Feng; Yu, Hsin Her

doi:10.1039/c0sm01101k

Cited by 77 publications

(42 citation statements)

References 35 publications

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“…The utilization of electrically resistive Joule heating to drive SME is desirable and convenient to apply in a number of real-life applications, especially where direct heating is not easily achieved. A variety of conductive fillers from zero dimensional particles, one dimensional chains to two dimensional films, such as carbon nanotubes (CNTs) [22], carbon black [23], carbon nanofibers (CNFs) [24,25], magnetic particles [26], short carbon fibers [27,28], conductive alignment [29,30], CNF mat [31] and nanopaper [32] have been used in the SMP nanocomposites. These conductive fillers not only enable remote actuation of shape transitions but also enhance the thermal conductivity [33][34][35].…”

mentioning

confidence: 99%

Synergistic effect of Ag nanoparticle-decorated graphene oxide and carbon fiber on electrical actuation of polymeric shape memory nanocomposites

Liang

Gou

et al. 2014

Smart Mater. Struct.

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This study reports an effective approach of significantly improving electrical properties and recovery performance of shape memory polymer (SMP) nanocomposite, of which its shape recovery was triggered by electrically resistive Joule heating. Reduced graphene oxide (GOs) self-assembled and grafted onto carbon fiber, were used to enhance the interfacial bonding with the SMP matrix via van der Waals force and covalent bond, respectively. A layer of Ag nanoparticles was synthesized from Ag+ solution and chemically deposited onto GO assemblies. These Ag nanoparticles were expected to bridge the gap between GO and improve the electrical conductivity. The experimental results reveal that the electrical conductivity of the SMP nanocomposite was significantly improved via the synergistic effect between Ag nanoparticle-decorated GO and carbon fiber. Finally, the electrically induced shape memory effect of the SMP nanocomposite was achieved, and the temperature distribution in the SMP nanocomposites was recorded and monitored. An effective approach was demonstrated to produce the electro-activated SMP nanocomposites and the resistive Joule heating was viable at a low electrical voltage below 10 V.

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confidence: 99%

Synergistic effect of Ag nanoparticle-decorated graphene oxide and carbon fiber on electrical actuation of polymeric shape memory nanocomposites

Liang

Gou

et al. 2014

Smart Mater. Struct.

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“…SMPs being responsive to athermal stimulus, such as moisture, light, electric/magnetic field, etc. have been reported as well 13–15. He et al reported a multi‐composite SMP featuring remote and selective triggering of the recovery of multiple temporary shapes.…”

Section: Introductionmentioning

confidence: 92%

Polymeric Shape Memory Nanocomposites with Heterogeneous Twin Switches

Luo

Zhu

2011

Macromol. Chem. Phys.

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“…The GO filled SMPU fibers have similar peaks with the pristine SMPU fibers except two peaks at ~1350 cm -1 and 1600 cm -1 , and these two peaks are the characteristic bands of the GO. With the increasing amount of GO incorporated into the system, the11 intensity of the peaks increases simultaneously. The results indicate that the GO sheets are successfully distributed in the SMPU matrix.The incorporation state of GO in SMPU matrix can be further investigated by the XRD patterns illustrated inFig.…”

mentioning

confidence: 93%

“…Compared with traditional shape memory materials like alloy, SMPU possesses several unique properties, including low production cost, flexibility, good processing performance, high deformation, and low density. In addition, its chemical structure and physical properties are highly adjustable to meet various applications [11][12][13]. However, SMPU still has some disadvantages, such as poor surface wettability, insufficient SME and mechanical strength.…”

Section: Introductionmentioning

confidence: 99%