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      Semi-IPNs with Moisture-Triggered Shape Memory and Self-Healing Properties.

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          Abstract

          Moisture or water has the advantages of being green, inexpensive, and moderate. However, it is challenging to endow water-induced shape memory property and self-healing capability to one single polymer because of the conflicting structural requirement of the two types of materials. In this study, this problem is solved through introducing two kinds of supramolecular interactions into semi-interpenetrating polymer networks (semi-IPNs). The hydrogen bonds function as water-sensitive switches, making the materials show moisture-induced shape memory effect. The host-guest interactions (β-cyclodextrin-adamantane) serve as both permanent phases and self-healing motifs, enabling further increased chain mobility at the cracks and self-healing function. In addition, these polyvinylpyrrolidone/poly(hydroxyethyl methacrylate-co-butyl acrylate) semi-IPNs also show thermosensitive triple-shape memory effect.

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          Author and article information

          Journal
          Macromol Rapid Commun
          Macromolecular rapid communications
          Wiley-Blackwell
          1521-3927
          1022-1336
          May 23 2017
          Affiliations
          [1 ] State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China.
          [2 ] Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, China.
          Article
          10.1002/marc.201700149
          28544461

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