Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 266-275.doi: 10.1007/s40242-022-2179-6

• Articles • Previous Articles     Next Articles

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

XIONG Xiaoyan1,2, LI Xiaobin1,2, ZHU Zifan1,2, ZHANG Ending1,2, SHI Jun1,2,4, LU Mangeng1,2,3,5   

  1. 1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, P. R. China;
    2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China;
    3. Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou 510650, P. R. China;
    4. New Materials Research Institute of CASCHEM(Chongqing) Co., Ltd., Chongqing 400714, P. R. China;
    5. CASH GCC Shaoguan Research Institute of Advanced Materials, Shaoguan 512440, P. R. China
  • Received:2022-05-17 Online:2023-04-01 Published:2023-03-16
  • Contact: SHI Jun E-mail:junshi@gic.ac.cn
  • Supported by:
    This work was supported by the Key Technologies Research and Development Program of China(No.2017YFD0601003), the Guangdong Natural Science Foundation, China(No.2018A030313895), the Regional Key Project of the Science and Technology Services Network Program(STS) of the CAS(No.KFJ-STS-QYZX-089) and the Guangzhou Science and Technology Planning Project, China(No.202002030305).

Abstract: 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.

Key words: Waterborne polyurethane, Aloe emodin, Quaternary ammonium salt, Antibacterial, pH response