| abstract |
The invention provides a preparation method of pH-responsive color-changing polyurethane hydrogel. In this method, anthocyanins, which have both pH-responsive discoloration and bacteriostatic effects, are added in the synthesis stage of the polyurethane hydrogel. The polyurethane hydrogel has good pH responsiveness, can show different colors with the change of pH, and the color is stable within 15-30s, and is very sensitive to the environmental acid-base response, and can be used for wound dressings, monitoring the color change by observing Wound pH to understand how well the wound is healing and whether infection has occurred. |