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Issue 25, 2017
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Body temperature-responsive two-way and moisture-responsive one-way shape memory behaviors of poly(ethylene glycol)-based networks

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Abstract

In this work, crosslinked shape-memory polymer networks were prepared by thermally induced free-radical polymerizations of methacrylate-terminated poly(ethylene glycol) (PEG) and n-butyl acrylate (BA), which integrate thermal-responsive two-way and moisture-responsive one-way shape memory effects (SME). Broad molecular weight distributions of PEG were employed with the aim of tuning the transition temperatures close to that of the human body and achieving a broad transition temperature range. The resultant PEG-2,4,10 kDa and PEG-2,6,10 kDa networks showed good thermal-responsive two-way reversible shape memory effects between the human body temperature and 0 °C, with the two-way recovery ratios of 8.2% and 6.2%, respectively. Furthermore, the crosslinked networks were found to be moisture-responsive and the deformed specimen was nearly recovered to the original shape (98% in the recovery ratio) when exposed to the moist atmosphere. These features, along with the inherent biocompatible properties, have great potential in biomedical applications.

Graphical abstract: Body temperature-responsive two-way and moisture-responsive one-way shape memory behaviors of poly(ethylene glycol)-based networks

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Publication details

The article was received on 11 May 2017, accepted on 07 Jun 2017 and first published on 07 Jun 2017


Article type: Paper
DOI: 10.1039/C7PY00786H
Citation: Polym. Chem., 2017,8, 3833-3840
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    Body temperature-responsive two-way and moisture-responsive one-way shape memory behaviors of poly(ethylene glycol)-based networks

    G. Yang, X. Liu, A. I. Y. Tok and V. Lipik, Polym. Chem., 2017, 8, 3833
    DOI: 10.1039/C7PY00786H

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