•30•DOI:10.19289/j.1004-227x.2023.14.0043D打印载银氧化石墨烯改性义齿基托复合涂层的性能郑少娜1，叶领云1，梁达颖2，黄婉慧1，廖文波1,*1.东莞理工学院基础化学实验教学中心，广东东莞5238082.东莞理工学院化学工程与能源技术学院，广东东莞523808摘要：通过静电吸附作用和化学还原反应在GO片层原位负载AgNPs，再与聚甲基丙烯酸甲酯(PMMA)混合后通过3D打印得到义齿基托复合涂层。使用透射电镜(TEM)和扫描电镜(SEM)考察了AgNPs-GO的形貌，利用X射线光电子能谱(XPS)表征了AgNPs-GO表面元素及其价态，测试了义齿基托复合涂层的机械性能和抗菌性能。结果发现，不同结构的AgNPs原位分布在褶皱的GO片层上，颗粒尺寸为10~50nm。XPS证实了化学还原反应的发生及GO片层上同时存在着AgNPs和Ag+。AgNPs-GO在复合涂层中均匀分散，添加AgNPs-GO使PMMA涂层的弯曲模量从(687.81±28.26)MPa增大到(746.42±20.45)MPa，弯曲强度从(24.52±1.95)MPa增大到(30.06±1.58)MPa。GO提升义齿基托材料机械性能的同时发挥其自身抗菌性，协同AgNPs增强了义齿基托材料的抗菌性能。关键词：氧化石墨烯；银纳米颗粒；静电吸附；聚甲基丙烯酸甲酯；复合涂层；三维打印；机械性能；抗菌中图分类号：TG335.86文献标志码：A文章编号：1004–227X(2023)14–0030–07Propertiesof3D-printeddenturebasecompositefilmcontainingsilvernanoparticlesloadedgrapheneoxideZHENGShaona1,YELingyun1,LIANGDaying2,HUANGWanhui1,LIAOWenbo1,*1.BasicChemistryExperimentalTeachingCenter,DongguanUniversityofTechnology,Dongguan523808,China2.SchoolofChemicalEngineeringandEnergyTechnology,DongguanUniversityofTechnology,Dongguan523808,ChinaAbstract:Silvernanoparticlesloadedgrapheneoxide(AgNPs-GO)nanocompositesweresynthesizedviaelectrostaticinteractionandchemicalreduction,andthenmixedwithpoly(methylmethacrylate)(PMMA)toprepareadenturebasecompositefilmby3Dprinting.ThemorphologyofAgNPs-GOwascharacterizedbytransmissionelectronmicroscopy(TEM)andscanningelectronmicroscopy(SEM),andtheelementsandtheirvalencestatesonAgNPs-GOsurfacewereanalyzedbyX-rayphotoelectronspectroscopy(XPS).Themechanicalandantibacterialpropertiesofthecompositefilmweretested.ItwasobservedthatAgNPsofdifferentshapeswithadiameterof10-50nmweredisperseduniformlyont...
