A hybrid polyvinyl alcohol/molybdenum disulfide nanosheet hydrogel with light-triggered rapid self-healing capability.
Wen Jing YangXiaodong WangRui ZhangYuxin WangQiu QiuLihui YuwenLian-Hui WangPublished in: Journal of materials chemistry. B (2021)
A hybrid self-healing hydrogel (PM hydrogel), based on polyvinyl alcohol (PVA) and chemically exfoliated molybdenum disulfide (ce-MoS2) nanosheets, was prepared by a simple freeze-thaw method. Due to the excellent photothermal conversion properties of ce-MoS2 nanosheets, the PM hydrogel self-repaired rapidly under near infrared (NIR) light irradiation for only 3 min with a high healing efficiency of 91.8 ± 3.3%. The PVA content, ce-MoS2 nanosheet loading and light irradiation time played important roles in the self-healing performance. Additionally, the PM hydrogel also revealed good self-healing properties with a healing efficiency of 60.6 ± 3.6% after the cut surfaces were separated for 24 h. The present approach provides an effective strategy for fabricating fast light-triggered hydrogen-bond based self-healing systems. The as-prepared hybrid PM hydrogel has great potential as a soft biomaterial for long-term applications due to its biocompatibility and self-healing capability.
Keyphrases
- drug delivery
- tissue engineering
- particulate matter
- quantum dots
- air pollution
- hyaluronic acid
- wound healing
- heavy metals
- cancer therapy
- photodynamic therapy
- highly efficient
- room temperature
- risk assessment
- visible light
- climate change
- staphylococcus aureus
- radiation therapy
- radiation induced
- biofilm formation
- candida albicans
- ionic liquid