聚乙烯醇导电水凝胶增强剂的研究进展

Research progress of polyvinyl alcohol conductive hydrogel enhancers

聚乙烯醇是一种应用极为广泛的水溶性材料,能过通过交联形成水凝胶。聚乙烯醇导电水凝胶具有良好的亲水性、生物可降解性、生物相容性、高结晶性和与纳米纤维素混合的可行性。聚乙烯醇导电水凝胶同时也具有较好的导电性,使得其在生物医学、柔性传感等领域具有广泛的应用前景。综述了聚乙烯醇导电水凝胶在柔性传感领域的最新发展,重点了介绍了导电填料和增强剂,包括聚合物多交联、纳米复合材料、甘油及乙二醇。进一步介绍了此类水凝胶的力学性能和电性能。最后,讨论了聚乙烯醇水凝胶在柔性传感领域面临的挑战和未来展望。

polyvinyl alcohol is a widely used water-soluble material,which can form hydrogels through crosslinking.Polyvinyl alcohol conductive hydrogel has good hydrophilicity,biodegradability,biocompatibility,high crystallinity and the feasibility of mixing with nano cellulose.Polyvinyl alcohol conductive hydrogel also has good conductivity,which makes it have a wide application prospect in biomedicine,flexible sensing and other fields.This paper reviews the latest development of polyvinyl alcohol conductive hydrogels in the field of flexible sensing,with emphasis on conductive fillers and enhancers,including polymer crosslinking,nanocomposites,glycerol and ethylene glycol.The mechanical and electrical properties of this kind of hydrogel are further introduced.Finally,the challenges and future prospects of PVA hydrogel in the field of flexible sensing are discussed.