Shape memory-assisted self-healing polyurethane inspired by a suture technique

Xu, Yurun; Chen, Dajun

doi:10.1007/s10853-018-2346-9

Cited by 33 publications

(18 citation statements)

References 37 publications

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“…which make it suitable for many applications such as recyclable, remendable, controlled-release, and shape memory materials. [4][5][6][7][8] Thermoreversibility is extensively used as a felicitous method to bring process ability to the polymer realm which introduces remendability, removability, and recyclability to polymeric systems. 9,10 Dynamic covalent bonds below their cleavage temperature improved mechanical properties of the polymer and after their cleavage temperature improved self-healing, recycling, and processing properties.…”

Section: Introductionmentioning

confidence: 99%

“…These bonds can cleave under the definite condition by external stimuli (light, pH, temperature, radiation, pressure, etc.) which make it suitable for many applications such as recyclable, remendable, controlled‐release, and shape memory materials . Thermoreversibility is extensively used as a felicitous method to bring process ability to the polymer realm which introduces remendability, removability, and recyclability to polymeric systems .…”

Section: Introductionmentioning

confidence: 99%

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Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Zolghadr

Shakeri

Zohuriaan‐Mehr³

et al. 2019

J of Applied Polymer Sci

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Novel self‐healing Diels–Alder (DA) polymer and the corresponding semi‐interpenetrated polymer networks (semi‐IPNs) were synthesized and characterized. Initially, a furan‐functionalized resin (FFR) was synthesized through the ring‐opening reaction of a conventional epoxy resin [diglycidyl ether bisphenol A (DGEBA)] with furfuryl alcohol as a bio‐based compound. Subsequently, semi‐IPNs with different compositions were obtained through the blending of DGEBA, FFR, 4,4′‐diaminodiphenylmethane, and 1,1′‐(methylenedi‐1,4‐phenylene) bismaleimide in the molten state by following a predetermined time–temperature program. Fourier transform infrared and nuclear magnetic resonance analyses confirmed the successful synthesis of the materials. Thermoreversibility via retro‐DA (rDA) reaction was evidenced by differential scanning calorimetry (DSC) and sol–gel transition tests. Repeated DSC cycle was successfully performed thrice on the DA polyadduct which corroborated repeatability of the DA/rDA association/dissociation. Self‐healing and mechanical properties were preliminarily evaluated by scanning electronic microscopy and flexural testing analyses, respectively. The self‐healing efficiencies were around 80 and 95% for semi‐IPN and DA polyadduct, respectively, based on flexural strength. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48015.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Zolghadr

Shakeri

Zohuriaan‐Mehr³

et al. 2019

J of Applied Polymer Sci

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“…After being heated to the healing temperatures, the scratched and deformed surfaces could recover to their original positions and bring the separated surfaces into contact. Synchronously, the retro‐DA reaction accelerated the chain interdiffusion between crack surfaces after closure and the crack healing was achieved 38 . Besides, hydrogen bonds in the hard or soft segments of polyurethane could also be activated when the temperature was above the glass transition temperature or melting temperature of the crystallized domains, and the dynamic exchange of hydrogen bonds on the crack surfaces might also make a contribution to the healing process 12 …”

Section: Resultsmentioning

confidence: 99%

Practicable self‐healing polyurethane binder for energetic composites combining thermo‐reversible DA action and shape‐memory effect

Yang

Zhao

et al. 2021

Polymers for Advanced Techs

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A novel thermally mendable polyurethane binder for energetic composites was designed and prepared via the Diels‐Alder (DA) cycloaddition reaction between a furan functionalized polycaprolactone (PCL) prepolymer and a bismaleimide compound. The structures and properties of synthesized PCL‐DA‐PU were fully characterized via Proton Nuclear Magnetic Resonance (1H‐NMR) and Fourier Transform Infrared spectroscopy (FT‐IR), Gel Permeation Chromatography (GPC), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) measurements. As‐prepared material showed good self‐healing ability of scratches by virtue of combining the shape recovery effect of PCL segments favoring scratch closure with the re‐crosslinking of the cleaved DA bonds, which was evidenced by optical microscopy and tensile analysis. A scratch healing efficiency determined by tensile tests of about 89% was achieved. Moreover, with the contribution of DA bonds in PCL‐DA‐PU binder, the microcracks and other damages in the TATB based energetic composites were almost mended and the mechanical strength can recovery above 78%.

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“…Since then, SMASH has been combined with many dynamic systems, such as, disulfide bonds, [154][155][156][157][158] DA bonds, [62,108,159] reversible triazoline dione chemistry, [160] reversible C-ON bond, [161] metal ligands, [34] hydrogen bonds, [162] and host-guest interactions. [163] For instance, Rowan and co-workers have reported a semi-crystalline, covalently cross-linked polymer containing disulfide bonds, where photohealing behavior is enabled by disulfide bonds, and crystallization and crosslinking endow the material with heat-induced shape memory properties (Figure 13a).…”

Section: Shape Memory Assisted Self-healingmentioning

confidence: 99%

Progress in Utilizing Dynamic Bonds to Fabricate Structurally Adaptive Self‐Healing, Shape Memory, and Liquid Crystal Polymers

Zhang

Wang

et al. 2022

Macromol. Rapid Commun.

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Stimuli‐responsive structurally dynamic polymers are capable of mimicking the biological systems to adapt themselves to the surrounding environmental changes and subsequently exhibiting a wide range of responses ranging from self‐healing to complex shape‐morphing. Dynamic self‐healing polymers (SHPs), shape‐memory polymers (SMPs), and liquid crystal elastomers (LCEs), which are three representative examples of stimuli‐responsive structurally dynamic polymers, have been attracting broad and growing interest in recent years because of their potential applications in the fields of electronic skin, sensors, soft robots, artificial muscles, and so on. Recent advances and challenges in the developments toward dynamic SHPs, SMPs, and LCEs are reviewed, focusing on the chemistry strategies and the dynamic reaction mechanisms that enhance the performances of the materials including self‐healing, reprocessing, and reprogramming. The different dynamic chemistries and their mechanisms on the enhanced functions of the materials are compared and discussed, where three summary tables are presented: A library of dynamic bonds and the resulting characteristics of the materials. Finally, a critical outline of the unresolved issues and future perspectives on the emerging developments is provided.

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Shape memory-assisted self-healing polyurethane inspired by a suture technique

Cited by 33 publications

References 37 publications

Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Practicable self‐healing polyurethane binder for energetic composites combining thermo‐reversible DA action and shape‐memory effect

Progress in Utilizing Dynamic Bonds to Fabricate Structurally Adaptive Self‐Healing, Shape Memory, and Liquid Crystal Polymers

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