Supramolecular polyurethane networks containing pyridine moieties for shape memory materials

Shaojun Chen, Jinlian Hu, Chun wah Yuen, Laikuen Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

55 Citations (Scopus)

Abstract

Fabricating smart materials with supramolecular switch is an attractive research topic in recent years. In this communication, shape memory polyurethane supramolecular networks are synthesized from BINA, HDI, MDI and BDO. DSC results show that amorphous soft phase and hard phase are formed through different intermolecular hydrogen bondings at the regions of pyridine units and urethane groups in the resulted BINA containing polyurethanes (BIN-PUs). Moreover, DMA results show that the BIN-PUs have higher modulus ratio (Eg/ Er> 400) and much higher maximum tanδ. These results determine that the BIN-PUs exhibit excellent shape memory effect: higher shape fixity (> 97%) and higher shape recovery (> 91.7%).
Original languageEnglish
Pages (from-to)1462-1464
Number of pages3
JournalMaterials Letters
Volume63
Issue number17
DOIs
Publication statusPublished - 15 Jul 2009

Keywords

  • Polyurethane
  • Pyridine
  • Shape memory materials
  • Supramolecular

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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