Photo-induced thiol-ene polysulfide-crosslinked materials with tunable thermal and mechanical properties

So Young An, Dong Geun Lee, Ji Won Hwang, Kyung Nam Kim, Joon Hyun Nam, Hyun Wook Jung, Seung Man Noh, Jung Kwon Oh

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Photo-induced thiol-ene crosslinked polymeric networks have been extensively explored in constructing a variety of new materials with enhanced mechanical properties for optical, biomedical, and sensing applications. Toward the broad applications, however, tunable mechanical properties are greatly desired. Here, an effective approach utilizing high-molecular-weight methacrylate copolymers having pendant thiol and vinyl groups (MCPsh and MCPenes) to modulate thermal and mechanical properties of photo-induced thiol-ene crosslinked materials is reported. The MCP copolymers are synthesized by an industrially friendly polymerization method, followed by post-modification including either a facile coupling reaction or reductive cleavage. Upon UV irradiation, thiol-ene reactive blends of MCPsh and MCPenes yield highly crosslinked materials through the formation of flexible sulfide linkages. These polysulfide-crosslinked materials based on rigid MCP backbones exhibit enhanced mechanical properties. Further, their thermal and mechanical properties are tuned by modulating monomer compositions of MCPs as well as varying numbers of pendant SH or vinyl groups (i.e., extent of crosslinking densities). This approach is versatile and effective for development of high performance polymeric materials.

Original languageEnglish
Pages (from-to)3060-3068
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume52
Issue number21
DOIs
Publication statusPublished - 2014

    Fingerprint

Keywords

  • copolymerization
  • crosslinking
  • photopolymerization
  • polysulfides
  • property relations
  • radical polymerization
  • structure

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this