Self-assembled multi-layered carbon nanofiber nanopaper for significantly improving electrical actuation of shape memory polymer nanocomposite

Lu, Haibao; Liang, Fei; Yao, Yongtao; Gou, Jihua; Hui, David

doi:10.1016/j.compositesb.2013.12.009

Cited by 77 publications

(42 citation statements)

References 28 publications

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“…SMPs can be deformed into a temporary shape, and then recover their original shapes, shape under external stimuli, such as heat [4][5][6], light [7][8][9], electricity [10][11][12], magnetic fields [13][14][15] and solvents [16,17]. Most research has focused on thermally induced SMPs in which the shape deformations were accomplished by direct heating.…”

Section: Introductionmentioning

confidence: 99%

Electroactive shape memory polymer based on optimized multi-walled carbon nanotubes/polyvinyl alcohol nanocomposites

Yang

et al. 2015

Composites Part B: Engineering

129

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Section: Introductionmentioning

confidence: 99%

Electroactive shape memory polymer based on optimized multi-walled carbon nanotubes/polyvinyl alcohol nanocomposites

Yang

et al. 2015

Composites Part B: Engineering

129

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“…The shape memory effect (SME) is the most typical characteristic of the SMPs and can be triggered by heating, electric field and solvent [16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Spontaneous biaxial pattern generation and autonomous wetting switching on the surface of gold/shape memory polystyrene bilayer

Liu

et al. 2017

Composites Part B: Engineering

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In this paper, shape memory effect induced initiation and evolution of surface patterns (wrinkles and cracks) were studied on the surface of gold/shape memory polystyrene (PS) bilayer, alongside with their impacts on autonomous surface wetting effects. Surface wrinkling was generated as a result of in-plane compression in the gold film where the thermal-induced shape memory effect occurred on the foundation layer.Cracks were generated on gold surface when the wrinkle pattern was further developed at a higher strain. The in-plane surface morphological bifurcation was observed when the crack patterns were developed perpendicular to the wrinkles direction, which is induced by biaxial stress transformation within the gold thin film because of the lateral Poisson's effect. The experimental mechanics investigations describe the relationships of the initiation/evolvement of surface morphology upon gold/shape memory PS bilayer with respects to various settings, such as the thicknesses of gold films, the applied strain on polymer layer, etc. The associated impact on surface wetting condition brought by the generated biaxial pattern on gold surface was studied. The water contact angle fluctuates within a narrow range according to the pre-strain for the samples after heating under the same plasma treatment times, which indicates that the biaxial pattern (cracks and wrinkles) in this paper have a little effect on the hydrophobicity of the gold film surface when the heated samples were treated by plasma for same times. After the surface plasma treatment, the surface hydrophilicity of the samples after post-annealing is significantly higher than that of the sample after deposition. And the contact angle decreases steadily as the air plasma treatment time is increased, the controllable surface hydrophobicity of gold coated PS bilayer can be achieved by tuning the plasma treatment time.

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“…Tremendous progress in synthesis, analysis, characterization, structural design, modeling and simulation promotes to the development SMPs in a knowledge based approach [15][16][17][18]. The thermally stimuli-responsive SME in SMPs have been achieved by a photoactive effect, magnetic-active effect, water (or solvent)-active effect and electro-active effect [19][20][21]. 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.…”

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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Self-assembled multi-layered carbon nanofiber nanopaper for significantly improving electrical actuation of shape memory polymer nanocomposite

Cited by 77 publications

References 28 publications

Electroactive shape memory polymer based on optimized multi-walled carbon nanotubes/polyvinyl alcohol nanocomposites

Electroactive shape memory polymer based on optimized multi-walled carbon nanotubes/polyvinyl alcohol nanocomposites

Spontaneous biaxial pattern generation and autonomous wetting switching on the surface of gold/shape memory polystyrene bilayer

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

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