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Open AccessArticle

Fabrication of Colorimetric Textile Sensor Based on Rhodamine Dye for Acidic Gas Detection

1
Smart Textiles R&D Group, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea
2
Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea
3
Department of Fiber System Engineering, Dankook University, Yongin 16890, Korea
4
Technical Textiles R&D Group, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Present address: Test-Bed Research Center, Korea Dyeing & Finishing Technology Institute (DYETEC), Daegu 41706, Korea.
Polymers 2020, 12(2), 431; https://doi.org/10.3390/polym12020431
Received: 7 January 2020 / Revised: 7 February 2020 / Accepted: 10 February 2020 / Published: 12 February 2020
(This article belongs to the Special Issue Innovative Functional Textiles)
For the immediate detection of gaseous strong acids, it is advantageous to employ colorimetric textile sensors based on halochromic dyes. Thus, a rhodamine dye with superior pH sensitivity and high thermal stability was synthesized and incorporated in nylon 6 and polyester fabrics to fabricate textile sensors through dyeing and printing methods. The spectral properties and solubility of the dye were examined; sensitivity to acidic gas as well as durability and reversibility of the fabricated textile sensors were investigated. Both dyed and printed sensors exhibited a high reaction rate and distinctive color change under the acidic condition owing to the high pH sensitivity of the dye. In addition, both sensors have outstanding durability and reversibility after washing and drying.
Keywords: rhodamine dye; textile sensor; gas detection; dyeing; printing; pH sensitive rhodamine dye; textile sensor; gas detection; dyeing; printing; pH sensitive
MDPI and ACS Style

Park, Y.K.; Oh, B.M.; Jo, A.R.; Han, J.H.; Lim, J.Y.; Oh, H.J.; Lim, S.J.; Kim, J.H.; Lee, W.S. Fabrication of Colorimetric Textile Sensor Based on Rhodamine Dye for Acidic Gas Detection. Polymers 2020, 12, 431.

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