4.7 Article

Photothermal-promoted multi-functional dual network polysaccharide hydrogel adhesive for infected and susceptible wound healing

期刊

CARBOHYDRATE POLYMERS
卷 273, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118557

关键词

Double network hydrogel; Self-healing hydrogel; Photothermal hydrogel; Infected wound healing; Antibacterial

资金

  1. State Key Laboratory of Southwestern Chinese Medicine, Resources the National Natural Science Foundation of China [81603309]
  2. Research Project of Sichuan Province [2020YFS0330]
  3. China Postdoctoral Science Foundation [2021M690488]

向作者/读者索取更多资源

The dual dynamic crosslinking hydrogel, supported by gallic acid grafted chitosan and oxidized Bletilla striata polysaccharide, is multifunctional and beneficial for wound healing in patients.
A low-cost wound dressing with efficient sterilization and exhibiting long-term antimicrobial activity is required for the absence of antibiotics, particularly for the wound healing of patients with chronic wounds or long-term activities under low sanitary conditions (e.g., battlefield and poverty-stricken areas). Here, a dual dynamic crosslinking hydrogel was introduced. The hydrogel was supported by gallic acid grafted chitosan and oxidized Bletilla striata polysaccharide as the scaffold and formed by two types of dynamic crosslinking: Schiff base, pyrogallol-Fe3+. It exhibited its adhesion, self-healing, good biocompatibility, great intrinsic antibacterial, and near-infrared photothermal conversion activity. In addition, the use of two types of polysaccharides, and the existence of the photothermal effect, making the hydrogel has the functions of accelerating gelation, degradation on-demand, and rapid sterilization. In brief, such cost-effective multifunctional hydrogel could support wound healing in patients prone to bacterial infection, and it has a promising application in the care of infected wounds.

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