Achieving Shape Memory : Reversible Behaviors of Cellulose-PU Blends in Wet-Dry Cycles

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

22 Scopus Citations
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Author(s)

  • Hongsheng Luo
  • Yong Zhu
  • Sheng Zhang
  • Ying Fan
  • Guangdou Ye

Detail(s)

Original languageEnglish
Pages (from-to)657-665
Journal / PublicationJournal of Applied Polymer Science
Volume125
Issue number1
Online published26 Dec 2011
Publication statusPublished - 5 Jul 2012
Externally publishedYes

Abstract

Shape memory effect (SME) was achieved for cellulose-polyurethane (PU) blends of different compositions in wet-dry cycles, featuring that the amorphous cellulose and the PU content served as the fixing phase and the recovery phase, respectively. The dependence on the compositions of the fixity ratio and the recovery ratio was quantitatively measured by tensile tests. The morphological and thermal properties of the blends were further investigated by scanning electron microscopy and thermogravimetric analysis. The storage modulus of the blends varied reversibly in the wet-dry cycles, as determined by dynamic mechanical analysis. Furthermore, the microstructure of the blends reversibly changed correspondingly, as determined by wide-angle X-ray scattering diffraction and Fourier transform infrared. It was predicted that the reversible transition in different amorphous cellulose structures triggered by water led to the reversible variation in modulus as well as the wet-dry SME of the blends. Copyright © 2011 Wiley Periodicals, Inc.

Research Area(s)

  • blends, cellulose, dry, polyurethane, reversible, shape memory, wet

Citation Format(s)

Achieving Shape Memory : Reversible Behaviors of Cellulose-PU Blends in Wet-Dry Cycles. / Luo, Hongsheng; Hu, Jinlian; Zhu, Yong; Zhang, Sheng; Fan, Ying; Ye, Guangdou.

In: Journal of Applied Polymer Science, Vol. 125, No. 1, 05.07.2012, p. 657-665.

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