Effect of Microphase-Separation Promoters on the Shape-Memory Behavior of Polyurethane

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

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Author(s)

  • Shaojun Chen
  • Qi Cao
  • Bo Jing
  • Yuanli Cai
  • Pengsheng Liu

Detail(s)

Original languageEnglish
Pages (from-to)5224-5231
Journal / PublicationJournal of Applied Polymer Science
Volume102
Issue number6
Online published28 Sep 2006
Publication statusPublished - 15 Dec 2006
Externally publishedYes

Abstract

A series of segmented polyurethanes (PUs) with novel thermosensitive shape-memory behavior were synthesized via the in situ addition of a small amount of 1octadecanol (ODO) to a PU system. For comparison, liquid paraffin (LP) modified PUs were also synthesized. The effects of a small amount of ODO or LP on the PU supra-structure and the thermosensitive shape-memory properties were studied with X-ray diffraction, differential scanning calorimetry, dynamic mechanical analysis, and shape-memory studies. The results indicated that the in situ addition of a small amount of ODO (e.g., 0.3 wt %) remarkably promoted microphase separation, facilitating the ordered packing of soft segments and the formation of perfect hard-segment domains and thus significantly improving the shape-memory properties. In contrast, LP had less significant influence on the shape-memory behavior because of the macrophase separation of these nonpolar alkyl chains from the PU system. © 2006 Wiley Periodicals, Inc.

Research Area(s)

  • Crystallization, Interfaces, Modification, Polyurethanes, Stimuli-sensitive polymers

Citation Format(s)

Effect of Microphase-Separation Promoters on the Shape-Memory Behavior of Polyurethane. / Chen, Shaojun; Cao, Qi; Jing, Bo; Cai, Yuanli; Liu, Pengsheng; Hu, Jinlian.

In: Journal of Applied Polymer Science, Vol. 102, No. 6, 15.12.2006, p. 5224-5231.

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