The tough, fluorescent and adhesive elastomer in aqueous dispersion: The contribution of aromatic amide-urea segments

Gao, Sifan; Ma, Ge; Ye, Jun; He, Li; Guo, Longhai; Li, Xiaoyü; Qiu, Teng; Tuo, Xinlin

doi:10.1016/j.mtcomm.2021.102880

Cited by 2 publications

(2 citation statements)

References 46 publications

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“…Gao et al enhanced the mechanical strength, toughness, and water resistance of fluorescent polyurethane elastomers by incorporating aramid urethane chain segments into the polyurethane framework. 26 In recent research, the repair of disulfide-containing self-healing polyurethane was initiated by external heat or light to facilitate bond exchange. Although a high repair rate through heat-triggered bond exchange has been demonstrated, the substantial energy consumed in self-healing remains an inevitable issue.…”

Section: Introductionmentioning

confidence: 99%

Novel disulfide-containing diols: synthesis and application in self-healing fluorescent polyurethane elastomers

Luo,

Liu,

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Novel disulfide-containing diols: synthesis and application in self-healing fluorescent polyurethane elastomers

Luo,

Liu,

et al. 2024

New J. Chem.

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“…Among various DCBs, the metathesis of aromatic disulfide (S-S) bonds under different kinds of stimuli has been extensively investigated [35][36][37]. In our previous work [38], we have demonstrated one post-curing strategy for the DCPN building of the PAC latex. In this work, we put forward the strategy as a feasible method to build the DCPN of WPUA composite latex, which was synthesized via miniemulsion polymerization with the functional monomer of methacrylate acetoacetoxyethyl (AAEM).…”

Section: Introductionmentioning

confidence: 99%

The Post-Curing of Waterborne Polyurethane–Acrylate Composite Latex with the Dynamic Disulfide-Bearing Crosslinking Agent

Zhang,

Liang,

Wang

et al. 2023

Molecules

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The development of a dynamic network for commodity polymer systems via feasible methods has been explored in the context of a society-wide focus on the environment and sustainability. Herein, we demonstrate an adaptive post-curing method used to build a self-healable network of waterborne polyurethane–acrylate (WPUA) composite latex. The composite latex was synthesized via the miniemulsion polymerization of acrylates in the dispersion of waterborne polyurethane (PU), with commercial acetoacetoxyethyl methacrylate (AAEM) serving as the functional monomer. Then, a dynamic disulfide (S–S)-bearing diamine was applied as the crosslinking agent for the post-curing of the hybrid latex via keto-amine condensation, which occurred during the evaporation of water for film formation. It was revealed that the microphase separation in the hybrid films was suppressed by the post-curing network. The mechanical performance exhibited a high reliability as regards the contents of the crosslinking agents. The reversible exchange of S–S bonds meant that the film displayed associative covalent-adaptive networks in the range of medium temperature in stress relaxation tests, and ≥95% recovery in both the stress and the strain was achieved after the cut-off films were self-healed at 70 °C for 2 h. The rebuilding of the network was also illustrated by the >80% recovery in the elongation at break of the films after three crushing–hot pressing cycles. These findings offer valuable insights, not only endowing the traditional WPUA with self-healing and reprocessing properties, but broadening the field of study of dynamic networks to polymer hybrid latex.

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The tough, fluorescent and adhesive elastomer in aqueous dispersion: The contribution of aromatic amide-urea segments

Cited by 2 publications

References 46 publications

Novel disulfide-containing diols: synthesis and application in self-healing fluorescent polyurethane elastomers

Novel disulfide-containing diols: synthesis and application in self-healing fluorescent polyurethane elastomers

The Post-Curing of Waterborne Polyurethane–Acrylate Composite Latex with the Dynamic Disulfide-Bearing Crosslinking Agent

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