Stimulus methods of multi-functional shape memory polymer nanocomposites: A review

Liu, Tianzhen; Zhou, Tianyang; Yao, Yongtao; Zhang, Fenghua; Liu, Liwu; Liu, Yanju; Leng, Jinsong

doi:10.1016/j.compositesa.2017.04.022

Cited by 186 publications

(97 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photoresponsive SMPs can respond to light stimuli by undergoing reversible changes in their properties [37]. ere are two main mechanisms that operate in light-induced SMPs: photochemical reactions leading to deformation and the employment of particles that convert light to heat [38,39]. In photochemical reactions, intrinsically photoresponsive SMPs are produced by incorporating reversible photoreactive molecular switches when a special wavelength of light strikes them; this alters the structure of their crosslinked polymer networks.…”

Section: Photoresponsive Smpsmentioning

confidence: 99%

“…e accumulation of structural alterations leads to an evolution of the polymer network and even subsequent macroscopic deformation. Consequently, photochemical SMEs are produced [38][39][40][41].…”

Section: Photoresponsive Smpsmentioning

confidence: 99%

“…erefore, it should be differentiated from the indirect actuation of thermally responsive SMPs [7]. Another photosensitive function is that molecular switches convert light to heat and then actuate thermally responsive SMPs [39]. erefore, illumination with the radiant thermal energy of infrared light possessing a wide range of spectra (500∼4000 cm −1 ) can serve as a heat source for photoresponsive SMPs; these can then be applied with noncontact nonmediums [7,39].…”

Section: Photoresponsive Smpsmentioning

confidence: 99%

See 2 more Smart Citations

Applications of Shape Memory Polymers in Kinetic Buildings

Duan

Zhang

et al. 2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Shape memory polymers (SMPs) have attracted significant attention from both industrial and academic researchers, due to their useful and fascinating functionality. One of the most common and studied external stimuli for SMPs is temperature; other stimuli include electric fields, light, magnetic fields, water, and irradiation. Solutions for SMPs have also been extensively studied in the past decade. In this research, we review, consolidate, and report the major efforts and findings documented in the SMP literature, according to different external stimuli. The corresponding mechanisms, constitutive models, and properties (i.e., mechanical, electrical, optical, shape, etc.) of the SMPs in response to different stimulus methods are then reviewed. Next, this research presents and categorizes up-to-date studies on the application of SMPs in dynamic building structures and components. Following this, we discuss the need for studying SMPs in terms of kinetic building applications, especially about building energy saving purposes, and review recent two-way SMPs and their potential for use in such applications. This review covers a number of current advances in SMPs, with a view towards applications in kinetic building engineering.

show abstract

Section: Photoresponsive Smpsmentioning

confidence: 99%

Section: Photoresponsive Smpsmentioning

confidence: 99%

Section: Photoresponsive Smpsmentioning

confidence: 99%

See 1 more Smart Citation

Applications of Shape Memory Polymers in Kinetic Buildings

Duan

Zhang

et al. 2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Its shape recovery process can be triggered with different stimuli, such as heat, electric field, pH, light, and so forth. With their low cost, light weight, ease of processability, and excellent shape‐memory properties compared with shape‐memory alloys and shape‐memory ceramics, shape‐memory polymer has attracted great attention . These characteristics enable shape‐memory polymer to have excellent application prospects in self‐deployable structures of aerospace fields such as antenna, truss, and hinges .…”

Section: Introductionmentioning

confidence: 99%

High glass transition temperature shape‐memory materials: Hydroxyl‐terminated polydimethylsiloxane‐modified cyanate ester

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Hydroxyl-terminated polydimethylsiloxane (HTPDMS) and hydrogenated bisphenol A-type epoxy resin (AL-3040) were coreacted with a silane coupling agent (KH-550) to form an AL-3040 epoxy resin-HTPDMS block copolymer. Then, the copolymer was used as a compatibilizer to modify cyanate ester with different mass ratios. Subsequently, the blend was cured to form HTPDMSmodified shape-memory cyanate ester. The soft Si─O─Si segments of HTPDMS act as a flexible unit that can be grafted with the crosslinked triazine structures of cyanate ester. It was excellent for the toughening modification of cyanate ester. With increasing mass ratio of compatibilizer and cyanate ester, the tensile strength and glass transition temperature (T g ) of HTPDMS-modified cyanate ester were decreased, whereas impact strength and elongation at break were increased. The shape-memory tests exhibited that HTPDMSmodified cyanate ester systems have excellent shape-memory properties with a shape recovery rate of >96% and shape fixity rate of >97% and a recovery time of less than 110 s. Furthermore, Thermo-Gravimetric Analyzer (TGA) tests showed that HTPDMS-modified cyanate ester exhibited good thermal stability; the temperature of 10% mass loss was high at 365 C. The char yield was increased with increasing contents of compatibilizer at 800 C. Therefore, HTPDMS modified cyanate ester exhibited much better heat resistance at high temperature. Figure 7. (a) The TGA curves of cyanate ester and HTPDMS-modified cyanate ester; (b) the DTGA curves of cyanate ester and HTPDMS-modified cyanate ester. [Color figure can be viewed at wileyonlinelibrary.com] ARTICLE WILEYONLINELIBRARY.COM/APP

show abstract

“…SMPs with a wide range of material properties have been designed and are reviewed briefly here for the interested reader ,. Due to inherent versatility, SMPs have been proposed for applications spanning biomedical devices,, space applications, microsensors and actuators, drug delivery systems and intelligent textiles, among others ,.…”

Section: Introductionmentioning

confidence: 99%

Ternary Polymeric Composites Exhibiting Bulk and Surface Quadruple‐Shape Memory Properties

et al. 2018

View full text Add to dashboard Cite

We report the design and characterization of a multiphase quadruple shape memory composite capable of switching between 4 programmed shapes, three temporary and one permanent. Our approach combined two previously reported fabrication methods by embedding an electrospun mat of PCL in a miscible blend of epoxy monomers and PMMA as a composite matrix. As epoxy polymerization occurred the matrix underwent phase separation between the epoxy and PMMA materials. This created a multiphase composite with PCL fibers and a two-phase matrix composed of phase-separated epoxy and PMMA. The resulting composite demonstrated three separate thermal transitions and amenability to mechanical programming of three separate temporary shapes in addition to one final, equilibrium shape. In addition, quadruple surface shape memory abilities are successfully demonstrated. The versatility of this approach offers a large degree of design flexibility for multi-shape memory materials.

show abstract

Stimulus methods of multi-functional shape memory polymer nanocomposites: A review

Cited by 186 publications

References 96 publications

Applications of Shape Memory Polymers in Kinetic Buildings

Applications of Shape Memory Polymers in Kinetic Buildings

High glass transition temperature shape‐memory materials: Hydroxyl‐terminated polydimethylsiloxane‐modified cyanate ester

Ternary Polymeric Composites Exhibiting Bulk and Surface Quadruple‐Shape Memory Properties

Contact Info

Product

Resources

About