Water accelerated self-healing of hydrophobic copolymers
Abstract
Previous studies have shown that copolymer compositions can significantly impact self-healing properties. This was accomplished by enhancement of van der Waals (vdW) forces which facilitate self-healing in relatively narrow copolymer compositional range. In this work we report the acceleration of self-healing in alternating/random hydrophobic acrylic-based copolymers in the presence of confined water molecules. Under these conditions competing vdW interactions do not allow H2O-diester H-bonding, thus forcing nBA side groups to adapt L-shape conformations, generating stronger dipole-dipole interactions resulting in shorter inter-chain distances compared to ‘key-and-lock’ associations without water. The perturbation of vdW forces upon mechanical damage in the presence of controllable amount of confined water is energetically unfavorable leading the enhancement of self-healing efficiency of hydrophobic copolymers by a factor of three. The concept may be applicable to other self-healing mechanisms involving reversible covalent bonding, supramolecular chemistry, or polymers with phase-separated morphologies.
- Publication Date:
- Research Org.:
- Clemson Univ., SC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1817089
- Grant/Contract Number:
- EE0008827
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING
Citation Formats
Davydovich, Dmitriy, and Urban, Marek W. Water accelerated self-healing of hydrophobic copolymers. United States: N. p., 2020.
Web. doi:10.1038/s41467-020-19405-5.
Davydovich, Dmitriy, & Urban, Marek W. Water accelerated self-healing of hydrophobic copolymers. United States. https://doi.org/10.1038/s41467-020-19405-5
Davydovich, Dmitriy, and Urban, Marek W. Thu .
"Water accelerated self-healing of hydrophobic copolymers". United States. https://doi.org/10.1038/s41467-020-19405-5. https://www.osti.gov/servlets/purl/1817089.
@article{osti_1817089,
title = {Water accelerated self-healing of hydrophobic copolymers},
author = {Davydovich, Dmitriy and Urban, Marek W.},
abstractNote = {Previous studies have shown that copolymer compositions can significantly impact self-healing properties. This was accomplished by enhancement of van der Waals (vdW) forces which facilitate self-healing in relatively narrow copolymer compositional range. In this work we report the acceleration of self-healing in alternating/random hydrophobic acrylic-based copolymers in the presence of confined water molecules. Under these conditions competing vdW interactions do not allow H2O-diester H-bonding, thus forcing nBA side groups to adapt L-shape conformations, generating stronger dipole-dipole interactions resulting in shorter inter-chain distances compared to ‘key-and-lock’ associations without water. The perturbation of vdW forces upon mechanical damage in the presence of controllable amount of confined water is energetically unfavorable leading the enhancement of self-healing efficiency of hydrophobic copolymers by a factor of three. The concept may be applicable to other self-healing mechanisms involving reversible covalent bonding, supramolecular chemistry, or polymers with phase-separated morphologies.},
doi = {10.1038/s41467-020-19405-5},
journal = {Nature Communications},
number = 1,
volume = 11,
place = {United States},
year = {Thu Nov 12 00:00:00 EST 2020},
month = {Thu Nov 12 00:00:00 EST 2020}
}
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