Eco-Friendly pH Indicator Based on Natural Anthocyanins from Lycium ruthenicum  

作　　者：ZHANG Hongjie LIAN Yasi YU Jiayan LU Run ZHANG Jie QIU Yiping FENG Lili 张宏杰;连雅思;余佳燕;卢润;张洁;邱夷平;冯丽丽(College of Textiles and Apparel,Quanzhou Normal University,Quanzhou 362000,China;Shishi Institute for Ecological&Smart Textile,Quanzhou Normal University,Quanzhou 362000,China;College of Textiles,Donghua University,Shanghai 201620,China)

机构地区：[1]College of Textiles and Apparel,Quanzhou Normal University,Quanzhou 362000,China [2]Shishi Institute for Ecological&Smart Textile,Quanzhou Normal University,Quanzhou 362000,China [3]College of Textiles,Donghua University,Shanghai 201620,China

出　　处：《Journal of Donghua University(English Edition)》2022年第2期110-114,共5页东华大学学报（英文版）

基　　金：Quanzhou City Science&Technology Program of China(No.2019C014R);Innovation and Entrepreneurship Training Program for College Students of Quanzhou Normal University,China(No.S202110399067)。

摘　　要：An eco-friendly and visual pH indicator was developed based on cotton fabrics dyed with natural Lycium ruthenicum extract(LRE),whose color changed from red to purple,blue and green at pH of 2-10.Three methods for dyeing cotton fabrics with LRE were attempted,namely pre-mordanting,simultaneous mordanting,and post-mordanting methods with different dyeing temperatures,dyeing times and dyebath pH values.The cotton fabrics exhibited the highest K/S value when they were dyed under a dyebath of pH 6 at 20℃for 90 min in the case of the simultaneous mordanting method.Meanwhile,the dyed cotton fabrics also showed reversible pH-dependent color changes.The developed flexible pH indicator based on renewable natural materials is suitable for multiple applications in environmental monitoring and smart textiles.

关 键 词：Lycium ruthenicum anthocyanins pH indicator environmental monitoring smart textiles 

分 类 号：TS193.5[轻工技术与工程—纺织化学与染整工程]