Textile-based indicator for acid-base titration

Industrial laboratory Diagnostics of materials, Journal Year: 2025, Volume and Issue: 91(3), P. 11 - 15

Published: March 20, 2025

In the present work, textile halochromic materials were obtained, which tested as indicators of acid-base titration. Textile obtained by functionalization cotton fabric with disazo derivatives 4,4’-diaminostilbene-2,2’-disulfonic acid using direct dyeing technology. Rectangular fragments material, 20 mm in size, placed directly into titrated solution. The range color change and rate its studied process potentiometric titration sodium hydroxide, bicarbonate tap water. Testing material an indicator was carried out example determining acidity correctness results determined added-found method. sensor is characterized a high change. visually observed all cases within jump on curve. data when alkalinity water various are good agreement each other. When assessing recovery test, degree discovery close to 100 % obtained. such indicator, dye localized tissue fragment, significantly facilitates fixation end point use developed can be relevant contactless control systems for medium through transparent wall alternative fluorescent sensors.

Language: Английский

Eco-friendly fabrication of colorimetric cotton sensors via UV-photografting and covalent immobilization for ammonia gas detection

Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 200, P. 109007 - 109007

Published: Dec. 24, 2024

Language: Английский