摘要
碳点(CDs)具有低毒性、水溶性、良好的生物相容性、易修饰性、优良的电化学活性和光学性能等优点,可用于高分子材料的改性,赋予其良好的光学性能及其他多种特殊性能.将其加入到聚乙烯醇(PVA)中,不仅可以使PVA力学性能和热稳定性得到有效改善,还赋予PVA一些新的性能,诸如电导率、介电性、热电性等多种电参数得到提高,呈现出荧光、磷光和耐紫外线等光学特性,同时具有抗菌性、抗氧化性和耐水性等一些优异的性能.使其在电磁屏蔽、存储器件、电容器、传感器、光学器件及功能性包装袋等领域崭露头角.本文就CDs改性PVA复合材料(CDs/PVA)性能的最新研究进展进行重点介绍,并对CDs/PVA复合材料未来应用方面进行了展望,对拓展其应用领域具有重要意义.
Abstract
Carbon dots(CDs)have advantages such as low toxicity,water tolerance,good biocompatibility,easy modification,excellent electrochemical activity,and optical properties.CDs can be used for the modification of polymer materials,endowing them with good optical properties and various other functionalities.Adding CDs to polyvinyl alcohol(PVA)not only effectively improves the mechanical properties and thermal stability of PVA,but also endows PVA with new properties,such as improved conductivity,dielectric properties,thermoelectric proper-ties,and other electrical parameters,optical properties such as fluorescence,phosphorescence,and UV resistance,antibacterial,antioxidant,and water resistance,which make PVA stand out in the fields of electromagnetic shield-ing,storage devices,capacitors,sensors,optical devices and functional packaging bags.This article focuses on the latest research progress in the properties of PVA modified with CDs(CDs/PVA),and prospects the future applica-tion of CDs/PVA,which is of great significance for expanding its application fields.
NETL
NSTL
维普
万方数据