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首页> 外文期刊>Journal of nano research >Fabrication of PMMA Membranes with Nano-Pillars Array Using Template/Spin-Coating Method
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Fabrication of PMMA Membranes with Nano-Pillars Array Using Template/Spin-Coating Method

机译：模板/旋涂法制备纳米柱阵列PMMA膜

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摘要

Template/spin-coating method was presented for fabricating single-layer nano-pillar array polymethylmethacrylate (SL-PMMA) and double-layer nano-pillar array polymethylmethacrylate (DL-PMMA) membranes. The different mass ratio of PMMA/DiMethyl Formamide (DMF) solution was dripped on single-layer porous anodic alumina (SL-PAA) or double-layer porous anodic alumina (DL-PAA) membrane and spun at 4000rpm speed for 30 seconds. The SL-PAA and DL-PAA membranes had been put into vacuum oven at 150 degrees C for 2 hours, before SL-PMMA and DL-PMMA were removed. Experimental results show that the regularity degree of PAA fabricated in OAS/PAS is higher than that of PAA fabricated in PAS by two-step anodization method. The ordered pores and clear double-layer outline can be observed from the surface and cross-section FESEM images of DL-PAA membranes. When the content of PMMA in mixture solution is 20 wt%, the top shape of nano-pillars is convex, because the solution was completely filled in the pore of SL-PAA, and the length of nano-pillars is equal to the height of pore of PAA. However, the top pore amount on nano-pillars at ascending speed 20 degrees C per minute is more than that of at ascending speed 10 degrees C per minute. The PMMA membranes with ordered mid-hollow and porous nano-pillars will have wide application prospect in biosensors, chemical sensors, microcapsules fabrication fields due to many advantages such as simple operation, low cost, high specific surface area, etc.
机译：提出了模板/旋涂法制备单层纳米柱阵列聚甲基丙烯酸甲酯（SL-PMMA）和双层纳米柱阵列聚甲基丙烯酸甲酯（DL-PMMA）膜。将不同质量比的PMMA /二甲基甲酰胺（DMF）溶液滴在单层多孔阳极氧化铝（SL-PAA）或双层多孔阳极氧化铝（DL-PAA）膜上，并以4000rpm的速度旋转30秒。在除去SL-PMMA和DL-PMMA之前，将SL-PAA和DL-PAA膜在150℃的真空烘箱中放置2小时。实验结果表明，采用两步阳极氧化法，在OAS / PAS中制备的PAA的规则性程度高于在PAS中制备的PAA的规则性程度。从DL-PAA膜的表面和横截面FESEM图像中可以观察到有序的孔和清晰的双层轮廓。当混合溶液中PMMA的含量为20 wt％时，纳米柱的顶部形状是凸形的，因为溶液完全填充在SL-PAA的孔中，并且纳米柱的长度等于高度。 PAA的孔。但是，纳米柱上的上升速度为每分钟20摄氏度时的顶部孔隙量大于上升速度为每分钟10摄氏度时的最高孔隙量。具有中空和多孔纳米柱有序的PMMA膜具有操作简便，成本低，比表面积大等诸多优点，在生物传感器，化学传感器，微胶囊制造领域具有广阔的应用前景。

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