Polymeric Shape Memory Nanocomposites with Heterogeneous Twin Switches

Luo, Hongsheng; Hu, Jinlian; Zhu, Yaofeng

doi:10.1002/macp.201100292

Cited by 39 publications

(26 citation statements)

References 33 publications

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“…In addition to the previously created concept of heterogeneous twin switches [10], we hypothesized that the simple SMP nanocomposite had three switches: the first, thermo-sensitive switch (S T ) due to the thermal transitions of the PCL; the second, naked watersensitive switch (S wÀ n ) due to the percolation cellulose network (PCN) distributed in SMPU amorphous region where hydrogen bonding could be disrupted by cool water; the third one, shielded water-sensitive switch (S wÀ s ) due to the PCN embedded in the PCL crystals where hydrogen bonding could only be disrupted after the PCL crystals were melted by hot water. This triple-switch-netpoint structure of the composite is schematically illustrated in Fig.…”

Section: Resultsmentioning

confidence: 97%

“…Although their multicomposite approach offered the benefit in terms of material design freedom, these required two types of nano-particles to be spatially separated otherwise the selective actuation capability would be lost. In recent years we have successfully explored cellulose whisker containing polymeric nanocomposites with water-triggered rapid shape recovery [9] and heterogeneous twin-switch triple-shape nanocomposites [10]. In this article, we further explored switch selectivity and path dependence in multi-shape recovery of the nano-composites.…”

Section: Introductionmentioning

confidence: 96%

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Path-dependent and selective multi-shape recovery of a polyurethane/cellulose-whisker nanocomposite

Luo

Zhu

2012

Materials Letters

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 96%

Path-dependent and selective multi-shape recovery of a polyurethane/cellulose-whisker nanocomposite

Luo

Zhu

2012

Materials Letters

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“…In addition to that, Hu and his team also fabricated cellulose nanowhiskers (CNWs)/elastomer and CNW/SMPU nanocomposites which exhibited good water sensitivity due to the reversible hydrogen bonding. They found that the fabricated CNW/SMPU showed triple SMEs upon exposure to sequential thermal and water stimuli [27].…”

Section: Water/solvent-responsive Smpsmentioning

confidence: 99%

Shape Memory Polymers for Smart Textile Applications

Thakur¹

2017

Textiles for Advanced Applications

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Shape memory polymer (SMP) is a genre of smart materials which demonstrate a capability to fix in the temporarily programed shape and to recover the original shape upon exposure to external stimuli. Such unique and amazing properties of SMPs are applied to develop smart textiles by incorporating SMP into the fabric. Various types of stimuliresponsive SMPs such as thermal, light, pH, and moisture have been used in textiles for enhancing or attaining some smart properties. The integration of SMPs in fabric provides many fascinating and improved properties such as good aesthetic appeal, comfort, textile soft display, smart controlled drug release, fantasy design, wound monitoring, smart wetting properties and protection against extreme variations in environmental conditions. In this chapter, we discussed different types of SMP used for this purpose, their functions, and applications in textiles with their potential applications in the near future.

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“…Another useful effect of NCs in SMPs is their high density of hydroxyl groups, leading to a novel type of water-sensitive SMP nanocomposite. Therefore, recent researches of NCs in shape-memory materials were focused on their reinforcing effect and new ambient responsive switches, such as water-triggered rapid shape-recovery nanocomposites [66,142].…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose and Its Application for Shape-Memory Materials

Fu¹,

Tian²

2015

Advanced Structured Materials

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Nanocellulose (NC) has been attracting a great deal of interest as promising candidates for bionanocomposite due to their appealing intrinsic properties, such as low density, high surface area, and mechanical strength. In view of countless publications on nanocellulose composites already, this chapter concentrates on application of nanocellulose for reinforcing shape-memory composites. Shape-memory composites enable high-recovery stress levels and various functions due to their different components. The shape-memory behavior is also dependent on the size, shape, and concentration of the fillers. The effect of nanocellulose in these composites is determined by different shape-memory switches and interactions between nanocellulose and matrices. A challenge of using NC in shape-memory composites is the lack of compatibility between hydrophobic matrices and hydrophilic NCs. Various chemical modification methods have been explored to address this hurdle. In this chapter, we summarized the effect of nanocellulose on the deformation mechanism of shape-memory materials, with a particular focus on thermo-and water-sensitive switches. The application of shape-memory composites based on nanocellulose is also discussed.

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Polymeric Shape Memory Nanocomposites with Heterogeneous Twin Switches

Cited by 39 publications

References 33 publications

Path-dependent and selective multi-shape recovery of a polyurethane/cellulose-whisker nanocomposite

Path-dependent and selective multi-shape recovery of a polyurethane/cellulose-whisker nanocomposite

Shape Memory Polymers for Smart Textile Applications

Nanocellulose and Its Application for Shape-Memory Materials

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