Park Young Ki, Oh Hyun Ju, Bae Jong Hyuk, Lim Jee Young, Lee Hee Dong, Hong Seok Il, Son Hyun Sik, Kim Jong H, Lim Seung Ju, Lee Woosung
Test-Bed Research Center, Korea Dyeing & Finishing Technology Institute (DYETEC), Daegu 41706, Korea.
Advanced Textile R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea.
Polymers (Basel). 2020 Nov 4;12(11):2595. doi: 10.3390/polym12112595.
For the immediate detection of strong gaseous alkalis and acids, colorimetric textile sensors based on halochromic dyes are highly valuable for monitoring gas leakages. To date, colorimetric textile sensors for dual-gas detection have usually been fabricated by electrospinning methods. Although nanofibrous sensors have excellent pH sensitivity, they are difficult to use commercially because of their low durability, low productivity, and high production costs. In this study, we introduce novel textile sensors with high pH sensitivity and durability via a facile and low-cost screen-printing method. To fabricate these textiles sensors, Dye 3 and RhYK dyes were both incorporated into a polyester fabric. The fabricated sensors exhibited high detection rates (<10 s) and distinctive color changes under alkaline or acidic conditions, even at low gas concentrations. Furthermore, the fabricated sensors showed an outstanding durability and reversibility after washing and drying and were confirmed to contain limited amounts of hazardous materials. Thus, our results show that the fabricated textile sensors could be used in safety apparel that changes its color in the presence of harmful gases.
对于强气态碱和酸的即时检测，基于酸碱指示剂染料的比色纺织传感器在监测气体泄漏方面具有很高的价值。迄今为止，用于双气体检测的比色纺织传感器通常是通过静电纺丝方法制造的。尽管纳米纤维传感器具有出色的pH敏感性，但由于其耐久性低、生产率低和生产成本高，难以商业化使用。在本研究中，我们通过一种简便且低成本的丝网印刷方法引入了具有高pH敏感性和耐久性的新型纺织传感器。为了制造这些纺织传感器，将染料3和RhYK染料都掺入聚酯织物中。所制造的传感器在碱性或酸性条件下，即使在低气体浓度下也表现出高检测率（<10秒）和明显的颜色变化。此外，所制造的传感器在洗涤和干燥后显示出出色的耐久性和可逆性，并被证实含有有限量的有害物质。因此，我们的结果表明，所制造的纺织传感器可用于在存在有害气体时改变颜色的安全服装中。
