Weldable and Reprocessable Biomimetic Polymer Networks Based on a Hydrogen Bonding and Dynamic Covalent Thiourea Motif

Dong Soo Lee, Yong Seok Choi, Jae Hyuk Hwang, Jin Hyeong Lee, Woohwa Lee, Suk Kyun Ahn, Sungmin Park, Jung Hyun Lee, Yong Seok Kim, Dong Gyun Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Here we describe the use of thiourea linkage as a hydrogen (H) bonding and dynamic covalent dual-functional motif to enhance mechanical versatility in biomimetic polymer networks (BMPNs). By controlling the dynamic thiourea bond exchanges in the covalently cross-linked BMPNs, greatly improved malleability and reprocessability are obtained while maintaining their assorted mechanical characteristics of stiffness, strength, toughness, resilience, and adaptability. Such characteristics enable versatile shape manipulation and mechanical functions of the BMPN-based 3D structures, including shape reconfiguration, welding, shape memory, load bearing, deformation/recovery, repair, and reprocessing.

Original languageEnglish
Pages (from-to)3714-3720
Number of pages7
JournalACS Applied Polymer Materials
Volume3
Issue number8
DOIs
Publication statusPublished - 2021 Aug 13

Keywords

  • biomimetic polymer networks
  • covalent adaptable networks
  • dynamic covalent bond
  • hydrogen (H) bond
  • thiourea

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry

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