Preparation of Temperature-Sensitive Polyurethanes for Smart Textiles

X. M. Ding, Jinlian Hu, Xiaoming Tao, C. P. hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

A series of segmented polyurethane (PU) were prepared using five different polyols and hexamethylene diisocyanate (HDI) as mixing soft segment, 4,4′-diphenylmethane diisocyanate, hydrophilic segment poly (ethylene glycol) 200 (PEG 200) and chain extender 1,4-butanediol (1,4-BDO) as triblock hard segment. The micro-structure of the PUs was investigated by differential scanning calorimetry, wide-angle X-ray, and polarizing microscopy. Tensile property was measured, and the water vapor transport property of the PU membranes as a function of temperature was tested accordingly. It was found that the PUs with crystalline soft segments were temperature-sensitive; that is, crystal melting of soft segment results in the significant increase in water vapor permeability of the PU membranes. Proper molecule design can set switch temperature ranges in water vapor permeability of the membranes from 10 to 40°C including body temperature. Such properties can contribute to the development of smart textiles.
Original languageEnglish
Pages (from-to)406-413
Number of pages8
JournalTextile Research Journal
Volume76
Issue number5
DOIs
Publication statusPublished - 1 Jan 2006
Externally publishedYes

Keywords

  • polyurethanes
  • smart textiles
  • temperature-sensitive

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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