阳极氧化铝膜的表面接枝改性及润湿行为

发布时间：2018-08-11 11:16

【摘要】：目的通过对阳极氧化铝膜(AAO)表面化学接枝甲基丙烯酸甲酯,改变其表面的粗糙度和分子结构,从而实现AAO膜表面润湿行为的可控。方法采用二步阳极氧化法制备六方柱形的多孔AAO膜,结构高度有序,并对AAO膜表面进行硅烷化(KH-570)处理,采用活性聚合的方法在其表面接枝上甲基丙烯酸甲酯。采用原子力显微镜(AFM)、X射线衍射仪(XRD)和接触角测定仪对AAO膜及改性后的AAO膜进行了结构表征和润湿行为研究。探讨了阳极氧化的工艺条件及接枝甲基丙烯酸甲酯对AAO膜的形貌和润湿性能的影响。结果 AAO膜孔径在100 nm左右,六边形孔洞分布均匀,并且六边形孔洞垂直于AAO膜表面,孔洞与孔洞平行,通过对其表面接枝甲基丙烯酸甲酯,使得AAO膜的表面水接触角先增大后减小。结论 AAO膜表面的润湿行为,可以通过AAO膜表面化学改性和表面粗糙度共同作用而得以调控。
[Abstract]:OBJECTIVE To modify the surface roughness and molecular structure of AAO film by grafting methyl methacrylate onto the surface of anodic alumina film (AAO), so as to control the wetting behavior of AAO film. Methods Hexagonal cylindrical porous AAO film was prepared by two-step anodic oxidation method. The structure of the film was highly ordered and the surface of AAO film was silylated at KH-570. Atomic force microscopy (AFM), X-ray diffraction (XRD) and contact angle analyzer were used to characterize the structure and wetting behavior of AAO film and modified AAO film. The process conditions of anodic oxidation and grafting of methyl methacrylate onto AAO film were discussed. Results The pore size of AAO film was about 100 nm, and the hexagonal pore distribution was uniform. The hexagonal pore was perpendicular to the surface of AAO film, and the pore was parallel to the pore. The water contact angle of AAO film increased first and then decreased by grafting methyl methacrylate on the surface. The interaction between AAO film surface chemical modification and surface roughness was controlled.
【作者单位】：郑州轻工业学院材料与化学工程学院河南省表界面重点实验室;
【基金】：国家自然科学基金(21401170,21271160)~~
【分类号】：TG174.451

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