Antibacterial and Alkali-responsive Cationic Waterborne Polyurethane Based on Modification of Aloe Emodin  

作　　者：XIONG Xiaoyan LI Xiaobin ZHU Zifan ZHANG Ending SHI Jun LU Mangeng 

机构地区：[1]Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou,510650,P.R.China [2]University of Chinese Academy of Sciences,Beijing,100049,China [3]Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics,Guangzhou,510650,China [4]New Materials Research Institute of CASCHEM(Chongqing)Co.,Ltd.,Chongqing,400714,China [5]CASH GCC Shaoguan Research Institute of Advanced Materials,Shaoguan,512440,China

出　　处：《Chemical Research in Chinese Universities》2023年第2期266-275,共10页高等学校化学研究（英文版）

基　　金：Key Technologies Research and Development Program of China(No.2017YFD0601003);Guangdong Natural Science Foundation,China(No.2018A030313895);Regional Key Project of the Science and Technology Services Network Program(STS)of the CAS(No.KFJ-STS-QYZX-089);Guangzhou Science and Technology Planning Project,China(No.202002030305).

摘　　要：Cationic water-based polyurethane(CWPU)was synthesized to explore aloe-emodin modifies to obtain CWPU materials with better comprehensive performance.It provides a simple way to synthesize antibacterial waterborne polyurethane,which is to introduce the end-blocking group of herbal extracts into the structure.It contains synergistic antibacterial effect of herbal antibacterial and quaternary ammonium ion on Escherichia coli.It makes the material resist the erosion of bacterial,and increase the service life of materials.When the pH value of the environment changes,the UV absorbance of the aloe-emodin modified cationic water-based polyurethane(AE-CWPU)also changes.Therefore,within a certain detection range,AE-CWPU has great applications in the field of smart response materials.The modified thermodynamic properties have been improved,and the mechanical properties basically maintained the maximum stress,and the elongation at break was reduced.

关 键 词：Waterborne polyurethane Aloe emodin Quaternary ammonium salt ANTIBACTERIAL pH response 

分 类 号：O63[理学—高分子化学]