Designing and Producing pH Sensitive Warning Clothes with different Fabric Constructions using Chromic Materials

Document Type : Original Article


1 Pre-treatment and Finishing of Cellulose-based Textiles Department, Textile Research and Technology Institute, National Research Centre, 33 El- Behouth St., Dokki, Giza, Egypt, P.O.12622.

2 Helwan University, Faculty of Applied Arts, Spinning and Weaving Department, Giza, Egypt


The subject of pH-sensitive textiles has advanced significantly in recent decades. Chrome textiles may be utilized in a variety of applications as flexible sensors. In this study, garments were created utilizing color-changing materials that are sensitive to pH shift and various fibers (cellulose and synthetic fibers), as well as diverse combinations, to shield laboratory personnel from the risks of acid and alkaline gases. All of the samples used in the study were made from cotton, viscose, and polyester. By combining different wefts, numbers, and fabric compositions, designers were able to create functional fabrics that may act as sensors, alerting wearers to danger and sudden color changes. Different methods have been used to build halo-chromium-based textile pH sensors that are responsive to the pH and alkalinity of various fabrics. The study's findings demonstrate that halo chromic sensors may be made utilizing the pH-indicating Cresol Red dye. Additionally, the Sol-gel method was used to encapsulate the Cresol Red pH Indicator in a silica net, producing clear and uniform tablets from chitosan doped with isopropyl acrylamide, a surfactant. The spectra demonstrated that the encapsulated CR was effective at sensing pH and alkalinity since it kept its structure in terms of its reaction to pH under neutral circumstances. With the change in ph, this therapy changed hue. The tissue density affects how these sensors respond. It is taken into account that this treatment's halo chrome behavior differs from that of the dye in the solution. In the end, several staining methods have succeeded in creating pH probes for treated tissues.


Main Subjects