Synthesis and characterization of antibacterial self-healable biopolyurethanes with eugenol-based bio-polyol

Oh, Hyeon-Gyeong; Oh, Tae-Uk; Hong, Sungyoup; Cha, Sang‐Ho

doi:10.1016/j.mtcomm.2023.106381

Cited by 4 publications

(1 citation statement)

References 63 publications

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“…Self-healing polyurethane (PU) materials are a type of functional polymer with remarkable characteristics and potential. Based on their ability to spontaneously repair physical damage and restore their original functionality and structure, they have gained widespread appeal in emerging fields such as coatings, − wearable electronic devices, , biomedical materials, − and aerospace . By the incorporation of self-healing properties into polymer chains, these materials not only enhance their lifespan and broaden their applications but also facilitate easier maintenance and contribute to environmental protection.…”

Section: Introductionmentioning

confidence: 99%

Tough and Self-Healing Waterborne Polyurethane Elastomers via Dynamic Hydrogen Bonds Design for Flexible Conductive Substrate Applications

Song,

Li,

Song

et al. 2024

ACS Appl. Mater. Interfaces

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Balancing the mechanical strength and self-healing performance of polyurethane (PU) remains a significant challenge in achieving excellent self-repairing PU materials. In this study, a self-healing waterborne PU elastomer was designed from a bionic concept by incorporating 2′-deoxythymidine (2′-dT) and isophorone diamine (IPDA) into the polymer chain. The loose stacking of IPDA’s irregular cycloaliphatic structure resulted in the irregular arrangement of urethane bonds in the hard domain. The formation of sextuple hydrogen bonds between 2′-dT and urethane bonds, as well as quadruple hydrogen bonds between urethane bonds themselves, enhanced the mechanical properties of the material. The multiple hydrogen bonds can dissociate, recombine, and dissipate energy, thereby improving the material’s repair capability. The hierarchical self-assembly of hydrogen bonds enabled the PU to achieve a tensile strength of 15.3 MPa and toughness of 100.75 MJ/m3. The prepared PU film is highly transparent and has a transmittance of more than 90%. Additionally, it can undergo rapid repair under high temperatures or under trace solvent conditions. When used as a flexible conductive substrate, it quickly restored the conductivity and enhanced the material’s lifespan after surface damage. This environmentally friendly and self-healing waterborne PU elastomer will hold broad application prospects in the field of flexible electronic devices.

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