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Development of supramolecular shape-memory polyurethanes based on Cu(II)–pyridine coordination interactions

  • Polymers
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Abstract

Shape-memory polymers with supramolecular switch have received increasing attention. This study reports the synthesis and characterization of supramolecular shape-memory polyurethane based on Cu(II)–pyridine coordination, obtained by mixing pyridine containing polyurethane with CuCl2. The results show that there are strong metal–ligand coordination interactions formed between Cu(II) and the pyridine ring in a series of CuCl2-doped polyurethane samples. The Cu(II)–pyridine coordination plays a crucial role in the enhanced physical netpoints for outstanding shape-memory properties. Indeed, the so-synthesized CuCl2-doped polyurethane exhibits not only a rapid tensile shape recovery but also excellent crimp shape recovery. The CuCl2-doped polyurethane containing suitable metal–ligand coordination interactions shows more than 99% shape fixation and more than 95% shape recovery. Our findings promote further applications of shape-memory polymers in multiple engineering fields.

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Acknowledgements

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant Nos. 51773120, 51802201), the Natural Science Foundation of Guangdong (Grant Nos. 2016A030313050, 2017A030310045), the Science and Technology Project of Shenzhen City (Grant No. JCYJ20170412105034748) and the Top Talent Launch Scientific Research Projects of Shenzhen (827-000133).

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Authors and Affiliations

  1. Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, People’s Republic of China

    Faxing Zou, Heng Chen & Shaojun Chen

  2. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China

    Haitao Zhuo

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  1. Faxing Zou
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  2. Heng Chen
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Correspondence to Shaojun Chen.

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Zou, F., Chen, H., Chen, S. et al. Development of supramolecular shape-memory polyurethanes based on Cu(II)–pyridine coordination interactions. J Mater Sci 54, 5136–5148 (2019). https://doi.org/10.1007/s10853-018-3179-2

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  • DOI: https://doi.org/10.1007/s10853-018-3179-2

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