Characteristics of polyurethane nanowebs treated with silver nanowire solutions as strain sensors

Inhwan Kim, Eugene Lee, Eunji Jang, Gilsoo Cho

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This study presents a simple methodology to fabricate a conductive polyurethane nanoweb for use as a textile strain sensor. The purpose of this paper is to (1) fabricate an electrically-conductive polyurethane nanoweb coated with silver nanowires and investigate changes in its electrical resistance in relation to the amount of silver nanowires, (2) investigate changes in the electrical resistance of the polyurethane nanowebs under stretching, (3) evaluate the mechanical and chemical properties of the treated nanowebs, and (4) observe the breathability of the coated nanowebs. Silver nanowires dispersed in ethanol (AgNW) were diluted as necessary by addition of ethanol. Electrical conductivity was imparted to the polyurethane nanowebs by a pour-coating process utilizing AgNWs. The initial electrical resistance of the specimens and the changes with stretching up to 20% and release were recorded, and the data were analyzed. The electrical resistance decreased in accordance with the AgNW concentration. The electrical resistance increased under stretch and decreased upon release. Field-emission scanning electron microscopy with energy dispersive spectroscopy and atomic force microscopy analysis displayed the polyurethane, the silver nanowire attachment to the fibers, and the silver nanowire networks. According to Fourier transform infrared spectroscopy analysis, hydrogen bonds derived from the treatment with ethanol generated a crimp structure on the polyurethane nanowebs. Both tensile strength and bending rigidity increased after the treatment. Breathability tests showed that the specimens had semi-windproof and good water vapor transmission properties as textiles.

Original languageEnglish
Pages (from-to)1215-1225
Number of pages11
JournalTextile Research Journal
Volume88
Issue number11
DOIs
Publication statusPublished - 2018 Jun 1

Fingerprint

Polyurethanes
Acoustic impedance
Silver
Nanowires
Sensors
Ethanol
Stretching
Textiles
Steam
Rigidity
Field emission
Chemical properties
Water vapor
Fourier transform infrared spectroscopy
Energy dispersive spectroscopy
Atomic force microscopy
Hydrogen bonds
Tensile strength
Coatings
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

Cite this

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abstract = "This study presents a simple methodology to fabricate a conductive polyurethane nanoweb for use as a textile strain sensor. The purpose of this paper is to (1) fabricate an electrically-conductive polyurethane nanoweb coated with silver nanowires and investigate changes in its electrical resistance in relation to the amount of silver nanowires, (2) investigate changes in the electrical resistance of the polyurethane nanowebs under stretching, (3) evaluate the mechanical and chemical properties of the treated nanowebs, and (4) observe the breathability of the coated nanowebs. Silver nanowires dispersed in ethanol (AgNW) were diluted as necessary by addition of ethanol. Electrical conductivity was imparted to the polyurethane nanowebs by a pour-coating process utilizing AgNWs. The initial electrical resistance of the specimens and the changes with stretching up to 20{\%} and release were recorded, and the data were analyzed. The electrical resistance decreased in accordance with the AgNW concentration. The electrical resistance increased under stretch and decreased upon release. Field-emission scanning electron microscopy with energy dispersive spectroscopy and atomic force microscopy analysis displayed the polyurethane, the silver nanowire attachment to the fibers, and the silver nanowire networks. According to Fourier transform infrared spectroscopy analysis, hydrogen bonds derived from the treatment with ethanol generated a crimp structure on the polyurethane nanowebs. Both tensile strength and bending rigidity increased after the treatment. Breathability tests showed that the specimens had semi-windproof and good water vapor transmission properties as textiles.",
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Characteristics of polyurethane nanowebs treated with silver nanowire solutions as strain sensors. / Kim, Inhwan; Lee, Eugene; Jang, Eunji; Cho, Gilsoo.

In: Textile Research Journal, Vol. 88, No. 11, 01.06.2018, p. 1215-1225.

Research output: Contribution to journalArticle

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