Thermo-/chemo-responsive shape memory/change effect in a hydrogel and its composites

Zhang, Jeff L.; Huang, Wei Min; Lu, Haibao; Sun, Li

doi:10.1016/j.matdes.2013.08.016

Cited by 73 publications

(39 citation statements)

References 27 publications

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“…For hydrogels, water may be utilized to tailor the shape memory/change behavior [9,20,21]. Self-healing has been realized in different types of polymeric materials [22][23][24].…”

Section: Working Mechanisms and Technologiesmentioning

confidence: 99%

“…Very recently, we found that some hydrogels may be used to achieve active disassembly at sub-component level. Given the excellent heating and water/moisture-responsive SME in hydrogels [9], small hydrogel pieces may be compressed into a required shape with reasonable strength (Figure 22a). When it is required, by means of wetting (or heating, or a combination of both) the hydrogel component is able to disassemble into original small pieces (Figure 22b,c).…”

Section: Recyclingmentioning

confidence: 99%

“…For instance, for a piece of dry hydrogel, in which the water content is low [9], on the one hand, it has the heating-responsive SME as many polymers; on the other hand, upon wetting in water, it swells and, hence, shows the water-responsive SCE. Although the term of shape memory technology (SMT) was started to be mentioned in early 1990s, it was mainly meant for shape memory alloys (SMAs) and associated techniques for their engineering applications at that time [6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advanced Shape Memory Technology to Reshape Product Design, Manufacturing and Recycling

Yang¹,

Huang

et al. 2014

Polymers

108

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This paper provides a brief review on the advanced shape memory technology (ASMT) with a focus on polymeric materials. In addition to introducing the concept and fundamentals of the ASMT, the potential applications of the ASMT either alone or integrated with an existing mature technique (such as, 3D printing, quick response (QR) code, lenticular lens) and phenomena (e.g., wrinkling and stress-enhanced swelling effect) in product design, manufacturing, and recycling are demonstrated. It is concluded that the ASMT is indeed able to provide a range of powerful approaches to reshape part of the life cycle or the whole life cycle of products.

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“…For hydrogels, water may be utilized to tailor the shape memory/change behavior [9,20,21]. Self-healing has been realized in different types of polymeric materials [22][23][24].…”

Section: Working Mechanisms and Technologiesmentioning

confidence: 99%

Section: Recyclingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advanced Shape Memory Technology to Reshape Product Design, Manufacturing and Recycling

Yang¹,

Huang

et al. 2014

Polymers

108

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“…Reproducing natural mineralization in the laboratory to fabricate biominerals with tailored physiochemical property is an attractive prospect for bone tissue regenerative therapy. Recently, hydrogels gained popularity due to their intrinsic elasticity, water retention ability and structural homology with 3D collagen matrix of natural bone [7,8] and considered to serve as ideal candidates for bonelike biomaterials from structure and composition point view of [9].…”

Section: Introductionmentioning

confidence: 99%

Bio-inspired mineralization of hydroxyapatite in 3D silk fibroin hydrogel for bone tissue engineering

Jin

Kundu

Cai

et al. 2015

Colloids and Surfaces B: Biointerfaces

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“…Hence instead of heating to above its original T g , upon immersing a piece of polyurethane in room temperature water, shape recovery can be observed. It has been reported that water-induced SME is also applicable in hydrogel [101] and cotton cellulose nanowhiskers (CNWs) [102].…”

Section: -Coolingmentioning

confidence: 99%

Temperature memory effect/triple-shape memory effect in niti shape memory alloys and shape memory effect in keratin

Tang¹

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Besides the shape memory effect (SME), in which the permanent shape can be recovered at the presence of the right stimulus, the temperature memory effect (TME) is another feature of shape memory materials. The TME refers to a phenomenon that a particular temperature can be memorized in a certain manner. A systematical investigation of the mechanism from energy point of view for the TME in NiTi shape memory alloys (SMAs) is presented based on the results of a series of differential scanning calorimeter (DSC) tests. The traditional approach for the TME is expanded, and a modified one is identified, which can be utilized to monitor overheating temperature with high accuracy. The triple-shape memory effect (triple-SME), which is easily achievable in shape memory polymers (SMPs) but not in SMAs, is achieved in a few types of NiTi SMAs. Two approaches, namely small strain program and larger strain program are proposed. The conditions on both material and programming parameters, as well as the mechanisms for the triple-SME, are identified and the influence of programming parameters is investigated. Both heating-induced and water-induced SMEs in human nail and silkworm silk, in which keratin is their main component, are systematically investigated. The influence of water content is studied. The triple-SME utilizing multiple-stimuli is realized in nail. The fundamentals behind the difference in heating and water based SMEs are studied.

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Thermo-/chemo-responsive shape memory/change effect in a hydrogel and its composites

Cited by 73 publications

References 27 publications

Advanced Shape Memory Technology to Reshape Product Design, Manufacturing and Recycling

Advanced Shape Memory Technology to Reshape Product Design, Manufacturing and Recycling

Bio-inspired mineralization of hydroxyapatite in 3D silk fibroin hydrogel for bone tissue engineering

Temperature memory effect/triple-shape memory effect in niti shape memory alloys and shape memory effect in keratin

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