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

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.

Facile fabrication of robust and universal UV‐curable polyurethane composite coatings with antibacterial properties

“…This situation will result in the flow of bacterial contents out, thereby killing the bacteria 34 . In addition, the antimicrobial properties of the prepared polyurethane composites are excellent when compared to previous literature reports 35,36 …”

“…34 In addition, the antimicrobial properties of the prepared polyurethane composites are excellent when compared to previous literature reports. 35,36 To simulate the actual application and further investigate the stability of the polyurethane coating combined with the antimicrobial agent, PU-DMOAP was placed in PBS buffer, and the antimicrobial performance of the polyurethane coating was tested after 1, 3, 5, and 7 days of immersion. The test results are shown in Figure 11.…”

Antibacterial activities of anthraquinones: structure–activity relationships and action mechanisms

“…63 A carbon nanoparticle polymer hybrid hydrogel loaded with an aloe emodin 64 quickly generated a large amount of heat and active oxygen with the help of near-infrared radiation, achieving controllable bacteriostasis. The latest research 65,66 unfolded that aloe emodin-containing waterborne polyurethane was a good antibacterial agent.…”

Effect of Composite Addition of Antibacterial/Photochromic/Self-Repairing Microcapsules on the Performance of Coatings for Medium-Density Fiberboard

“…With regard to research on the antibacterial properties, Hu et al [38] proved that aloe emodin has an inhibitory effect on Staphylococcus aureus. Xiong et al [39] used aloe emodin to modify the cationic waterborne polyurethane, and the thermodynamic properties of the modified materials were improved and the mechanical properties were maintained. In the previous results [14,18,20,23,28,40], the use of single-functional microcapsules can give the coating a specific function, such as photochromic, antibacterial, and self-repairing functions.…”