Revealing triple-shape memory effect by polymer bilayers

Tao Xie, Xingcheng Xiao, Yang Tse Cheng

Research output: Contribution to journalArticlepeer-review

220 Scopus citations

Abstract

Bilayer polymers that consist of two epoxy dual-shape memory polymers of well-separated glass transition temperatures have been synthesized. These bilayer epoxy samples exhibit a triple-shape memory effect (TSME) with shape fixities tailorable by changing the ratio between the two layers. The triple-shape fixities of the bilayer epoxy polymers can be explained by the balance of stress between the two layers. Based on this work, it is believed that the following three molecular design enterions should be considered in designing triple-shape memory polymers with optimum TSME: 1) well-separated thermal transitions, 2) a strong interface, and 3) an appropriate balance of moduli and relative ratios between the layers (or microphases).

Original languageEnglish
Pages (from-to)1823-1827
Number of pages5
JournalMacromolecular Rapid Communications
Volume30
Issue number21
DOIs
StatePublished - Nov 2 2009

Keywords

  • Interfaces
  • Shape memory polymers
  • Stimuli-sensitive polymers
  • Triple-shape memory effect

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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