Limin Wang, Yaru Yu, Xiaowen Zhao, Zhen Zhang, Xueling Yuan, Jinlong Cao, Weikun Meng, Lin Ye, Wei Lin, Guanglin Wang
Acute and chronic wounds, caused by trauma, tumors, diabetic foot ulcers, etc., are usually difficult to heal, while applying exogenous electrical stimulation to enhance the endogenous electric field in the wound has been proven to significantly accelerate wound healing. However, traditional electrical stimulation devices require an additional external power supply, making them poor in portability and comfort. In this work, a self-powered piezoelectric poly(vinyl alcohol) (PVA)/polyvinylidene fluoride (PVDF) composite hydrogel is constructed by establishing a distinctive preparation process of freezing/thawing-solvent replacement-annealing-swelling...
October 4, 2022: ACS Applied Materials & Interfaces