纺织高校基础科学学报2025，Vol.38Issue(2)：12-20,9.DOI:10.13338/j.issn.1006-8341.2025.02.002
水溶性纤维素-螺吡喃光致变色高分子材料的制备及性能
Preparation and properties of water-soluble cellulose-spirpyran photochromic polymer materials
摘要
Abstract
Spiropyran photochromic materials have become a research hotspot for many scholars due to their fast response ability and intuitive visual color change,and most spirropyran derivatives are easily soluble in solvents and insoluble in water,resulting in limited use.To develop water-soluble spiropyran,this study used silylated spiropyran(SP)and cellulose nanocrystals(CNC)as raw materials to synthesize a water-soluble nanocellulose-spiropyran photochromic polymer mate-rial(CNC-SP)through graft polymerization.CNC-SP and fabrics were tested by UV-Vis spectroscopy,optical microscope,SEM,etc.The results show that CNC-SP is water-soluble and is more compati-ble with conventional polyacrylate and polyurethane emulsion.UV-visible light spectrum and appear-ance results show that when illuminated by the ultraviolet light for 200 s,CNC-SP changes from orange to red.When illuminated by the visible light for 180 s,the color recovery is recovered,with a reversible color change.More importantly,CNC-SP has been found to act as a Pickering stabi-lizer to obtain a stabler photochromic Pickering emulsion.The fabric test results show that the water-soluble CNC-SP can be finished on the cotton fabrics by conventional padding finishing,and the photochromic cotton fabric has good levelness and light fatigue resistance.The photochromic cotton fabrics still has good color changing performance after 20 reversible changes,but the soa-ping fastness needs to be further improved.关键词
纤维素/螺吡喃/光致变色/水溶性/Pickering稳定剂Key words
cellulose/spiropyran/photochromicity/water-soluble/Pickering stabilizer引用本文复制引用
张帆,李艺琳,蔡再生,黄旭明,陆少锋,刘慧景..水溶性纤维素-螺吡喃光致变色高分子材料的制备及性能[J].纺织高校基础科学学报,2025,38(2):12-20,9.基金项目
国家自然科学基金青年基金(21908171) （21908171）
陕西省教育厅科学研究计划项目(23JY030) （23JY030）
西安市科技局高校院所科技人员服务企业项目(24GXFW0012) （24GXFW0012）
西安市碑林区科技计划项目(GX2406) （GX2406）
