浸渍提拉法制备高分子纳米膜及膜厚控制机理研究  

Fabrication of polymer nanofilm by dip-coating method and mechanism investigation of film thickness-controlling

作　　者：张向阳 古峰 孙蒙蒙 朱钱 马禹[1,2] Zhang Xiangyang1＇2, Gu Feng1＇2, Sun Mengmeng1＇2, Zhu Qian1＇2 ,Ma Yu1＇2(1.College of Material Science and Engineering,Donghua University,Shanghai 201620; 2.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University,Shanghai 20162)

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《化工新型材料》2018年第3期203-206,共4页New Chemical Materials

基　　金：国家自然科学基金(21204011);中央高校基本科研业务费专项基金资助

摘　　要：以聚乙烯醇(PVA)水溶液为成膜溶液,硅片为成膜基板,采用浸渍-提拉法在硅片上制备了PVA纳米膜。通过对PVA溶液表面张力和黏度的测量,并结合高精度椭圆偏振光谱仪、透反射偏光显微镜和原子力显微镜对所制备PVA纳米膜的厚度和表面形貌进行了测定和分析。结果表明,在高的提拉速率下,纳米膜的膜厚由提拉速率控制,符合Landau-Levich理论提出的标度关系;在低的提拉速率下,膜厚由溶剂挥发速率控制,与提拉速率无关。Poly（vinyl alcohol）nanofilm was dip-coated on the silicon wafer,with PVA-water solution as filmforming solution,and the silicon water as substrate.The surface tension and viscosity of PVA-water solution were measured by surface tension meter and Ubbelohode viscometer,respectively.The thickness and surface morphology of PVA were characterized by ellipsometer,optical microscope and AFM,respectively.The results showed that the thickness of PVA nanofilm was controlled by pulling rate at the high rate regime,which was in accordance with Landau-Levich theory.While at slower pulling rate,independent of pulling rate,the thickness was controlled by solvent evaporation.

关 键 词：聚乙烯醇纳米膜 提拉法 薄膜厚度 

分 类 号：TB383.2[一般工业技术—材料科学与工程]