Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/ijms23136902
Keywords
supramolecular polymer; non-covalent interaction; self-healing product; intrinsic self-healing; self-assembly; molecular recognition; mechanical properties
Funding
- Budget Bureau, The Prime Minister's Office, Thailand
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This article introduces the intrinsic self-healing strategy based on supramolecular interaction or non-covalent interaction to enhance the mechanical properties of materials. The non-covalent interactions act as transient crosslinking points in materials, preventing and repairing broken polymer chains. Utilizing these strategies can increase the lifetime of products, achieve rapid healing, and reduce accidents and maintenance costs.
Supramolecular polymers are widely utilized and applied in self-assembly or self-healing materials, which can be repaired when damaged. Normally, the healing process is classified into two types, including extrinsic and intrinsic self-healable materials. Therefore, the aim of this work is to review the intrinsic self-healing strategy based on supramolecular interaction or non-covalent interaction and molecular recognition to obtain the improvement of mechanical properties. In this review, we introduce the main background of non-covalent interaction, which consists of the metal-ligand coordination, hydrogen bonding, pi-pi interaction, electrostatic interaction, dipole-dipole interaction, and host-guest interactions, respectively. From the perspective of mechanical properties, these interactions act as transient crosslinking points to both prevent and repair the broken polymer chains. For material utilization in terms of self-healing products, this knowledge can be applied and developed to increase the lifetime of the products, causing rapid healing and reducing accidents and maintenance costs. Therefore, the self-healing materials using supramolecular polymers or non-covalent interaction provides a novel strategy to enhance the mechanical properties of materials causing the extended cycling lifetime of products before replacement with a new one.
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