Thermo-responsive mending of polymers crosslinked by thermally reversible covalent bond: Polymers from bisfuranic terminated poly(ethylene adipate) and tris-maleimide

Yoshie, Naoko; Watanabe, Miki; Araki, Hitomi; Ishida, Kohtaro

doi:10.1016/j.polymdegradstab.2010.01.032

Cited by 87 publications

(40 citation statements)

References 14 publications

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“…The sample surface was firstly scraped with a razor blade and a crack formed on it. When the sample was heated at 80 °C for 10 min, the crack disappeared completely, which is attributed to the reversible crosslinking reaction bridging the cut surface . Therefore, the resulting CBPUs via D‐A reaction have greatly improved mechanical properties, recyclability, and self‐healing ability.…”

Section: Resultsmentioning

confidence: 99%

Recyclable bio‐based crosslinked polyurethanes with self‐healing ability

2018

J of Applied Polymer Sci

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We report the synthesis of a linear bio-based polyurethane (bio-PU) containing furan ring by using renewable polylactide copolymer diol and 2,5-furandimethanol as a soft segment and chain extender, respectively, in which the reversible crosslinked covalent bonds between hard segments were incorporated via Diels-Alder (D-A) reaction between the furan ring of the chain extender and bismaleimide (BM) crosslinker. By simply controlling the amount of BM, mechanical properties of the obtained crosslinked bio-PUs (CBPUs) were varied widely. In particular, the CBPU100 sample shows the highest tensile strength of 10.8 MPa, Young's modulus of 193 MPa, and an elongation of 155%. The differential scanning calorimetry experiments verify the recycle property of the CBPUs by the D-A/retro-D-A reaction at the proper temperature. The thermal recyclability and remolding ability of these materials are demonstrated by two kinds of polymer processing methods, i.e., solution casting and hot-compression molding. The recycled CBPUs display almost identical elongation and slightly decreased tensile strength compared to the as-synthesized samples. Furthermore, the CBPUs also exhibit excellent self-healing ability. Therefore, the resulting CBPUs possess tunable mechanical properties, good thermal recyclability, re-mending, and self-healing ability, which makes the bio-based materials more eco-friendly. V C 2018 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2018, 135, 46272.

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Section: Resultsmentioning

confidence: 99%

Recyclable bio‐based crosslinked polyurethanes with self‐healing ability

2018

J of Applied Polymer Sci

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“…Mild condition healing was also conducted in this system. Since the DA bond is weaker than ordinary covalent bonds, the crack propagates preferentially along the weak DA adducts to release the stress . The temperature of 75°C was selected, as this temperature is beneficial for DA reaction and also provides necessary chain mobility (above T g ).…”

Section: Resultsmentioning

confidence: 99%

Facile fabrication of fast recyclable and multiple self‐healing epoxy materials through diels‐alder adduct cross‐linker

Xiao

Liu

Dong

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

153

103

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A reversibly cross‐linked epoxy resin with efficient reprocessing and intrinsic self‐healing was prepared from a diamine Diels‐Alder (DA) adduct cross‐linker and a commercial epoxy oligomer. The newly synthesized diamine cross‐linker, comprising a DA adduct of furan and maleimide moieties, can cure epoxy monomer/oligomer with thermal reversibility. The reversible transition between cross‐linked state and linear architecture endows the cured epoxy with rapid recyclability and repeated healability. The reversibly cross‐linked epoxy fundamentally behaves as typical thermosets at ambient conditions yet can be fast reprocessed at elevated temperature like thermoplastics. As a potential reversible adhesive, the epoxy polymer with adhesive strength values about 3 MPa showed full recovery after repeated fracture‐thermal healing processes. The methodology explored in this contribution provides new insights in modification of conventional engineering plastics as functional materials. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 2094–2103

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“…The cross‐linked copolymers are designed to retain their shape, and to improve the mechanical strength of the material, by incorporation of reversible chemical bonds that are utilized to reattach the fractured materials. Two approaches have been reported for such self‐repair systems, one involving use of non‐covalent14–17 and the other reversible (dynamic) covalent bonds 18–27. The advantages of the non‐covalent bond approach include high reactivity and repeatability of the repair reaction.…”

Section: Cross‐linked Polymers 4a‐4d and Their Physical Properties Nmentioning

confidence: 99%

Self‐Healing of Covalently Cross‐Linked Polymers by Reshuffling Thiuram Disulfide Moieties in Air under Visible Light

et al. 2012

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Thermo-responsive mending of polymers crosslinked by thermally reversible covalent bond: Polymers from bisfuranic terminated poly(ethylene adipate) and tris-maleimide

Cited by 87 publications

References 14 publications

Recyclable bio‐based crosslinked polyurethanes with self‐healing ability

Recyclable bio‐based crosslinked polyurethanes with self‐healing ability

Facile fabrication of fast recyclable and multiple self‐healing epoxy materials through diels‐alder adduct cross‐linker

Self‐Healing of Covalently Cross‐Linked Polymers by Reshuffling Thiuram Disulfide Moieties in Air under Visible Light

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