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Self-Healable Reprocessable Triboelectric Nanogenerators Fabricated with Vitrimeric Poly(hindered Urea) Networks.

Author(s): Patel T, Kim MP, Park J, Lee TH, Nellepalli P, Noh SM, Jung HW, Ko H, Oh JK

In recent years, the advent of highly deformable and healable electronics is exciting and promising for next-generation electronic devices. In particular, self-healable triboelectric nanogenerators (SH-TENGs) serve as promising candidates based on the combi...

Article GUID: 32840992
Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.

Author(s): An SY, Noh SM, Oh JK

Macromol Rapid Commun. 2017 Apr;38(8): Authors: An SY, Noh SM, Oh JK

Article GUID: 28221703
Title:Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.
Authors:An SY,  Noh SM,  Oh JK
Link:https://www.ncbi.nlm.nih.gov/pubmed/28221703?dopt=Abstract
Category:Macromol Rapid Commun
PMID:28221703
Dept Affiliation: CHEMBIOCHEM
1 Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada.
2 Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea.

Description:

Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.

Macromol Rapid Commun. 2017 Apr;38(8):

Authors: An SY, Noh SM, Oh JK

Abstract

A new multiblock copolymer self-healing strategy is reported that centers on the synthesis of block copolymers designed with different self-healing motifs incorporated into individual blocks. As a proof of concept, a novel pentablock copolymer (ABCBA) consisting of a poly(ethylene glycol) middle block and self-healable symmetric blocks of a polymethacrylate with pendant disulfide linkages and carboxylic acids is synthesized by a combination of consecutive controlled radical polymerization with hydrolytic cleavage. Disulfide exchange reactions of pendant disulfide linkages and metal-ligand interactions of pendant carboxylic acids with ferric ions allow for the formation of dual crosslinked networks with dynamic disulfide and supramolecular crosslinkages. The resultant networks possessing self-healing viscoelasticity enable self-healing on macroscale damages through supramolecular metal-ligand interactions and disulfide exchange reactions at room or moderate temperatures. These preliminary results suggest that the strategy can offer the versatility in the development of multifunctional self-healable materials in dual or multiple self-healable mechanisms.

PMID: 28221703 [PubMed - indexed for MEDLINE]