Bifunctional Smart Hydrogel Dressing with Strain Sensitivity and NIR-Responsive Performance

• DOI: 10.1021/acsami.1c15312
• Publication Date: 2021-09-24T18:34:29Z
• Authors: Fan Hao; Liangyu Wang; Binling Chen; Lin Qiu; Jun Nie; Guiping Ma
• Keywords: Gauge factor; Smart material; Smart polymer

Smart response hydrogel has a broad application prospect in human health real-time monitoring due to its responses variety of stimuli. In this study, we developed novel smart dressing based on conductive MXene nanosheets and temperature-sensitive PNIPAm polymer. γ-Methacryloxypropyltrimethoxysilane (KH570) was selected functionalize the surface further improve interface compatibility between PNIPAm. Our prepared K-M/PNIPAm found have strain-sensitive property, as well respond NIR phase change volume change. When applied strain flexible sensor, exhibited high sensitivity with gauge factor (GF) 4.491, working range ≈250%, fast ∼160 ms, good cycle stability (i.e., 3000 s at 20% strain). Besides, can be used an efficient light-controlled drug release carrier achieve on-demand release. This work paved way for NIR-controlled functions.