Liquid crystalline polyurethane composites based on supramolecular structure with reversible bidirectional shape memory and multi-shape memory effects

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

9 Scopus Citations
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Author(s)

  • Funian Mo
  • Jianfeng Ban
  • Lulu Pan
  • Bo Shi
  • Shaorong Lu

Detail(s)

Original languageEnglish
Pages (from-to)103-110
Journal / PublicationNew Journal of Chemistry
Volume43
Issue number1
Online published14 Nov 2018
Publication statusPublished - 7 Jan 2019

Abstract

In this study, a novel series of supramolecular liquid crystalline (LC) polyurethane composites, named SMPU-#HOBA (# represents the molar ratio of HOBA/BINA), were successfully prepared by incorporating hexadecyloxybenzoic acid (HOBA) into pyridine-containing polyurethane (PU). The effect of HOBA on the structure, morphology, and properties has been carefully investigated. The results demonstrate that the obtained SMPU-#HOBA composites not only maintained the LC property of the HOBA mesogen, but also enhanced the intrinsic crystallization of the soft segment phase. Thus, the composites showed an excellent multi-shape memory property with two crystalline temperatures. Moreover, self-gripping was demonstrated revealing reversible bidirectional shape memory by virtue of molecular flipping and movement of the hard segment domain. These composites display a rare combination of LC properties, multi-shape memory properties, and reversible bidirectional shape memory properties, which makes them ideal for many potential applications in smart temperature sensitive devices.

Citation Format(s)

Liquid crystalline polyurethane composites based on supramolecular structure with reversible bidirectional shape memory and multi-shape memory effects. / Mo, Funian; Ban, Jianfeng; Pan, Lulu et al.
In: New Journal of Chemistry, Vol. 43, No. 1, 07.01.2019, p. 103-110.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review