Layer-by-Layer Deposition of Poly(diallyldimethylammonium chloride) and Sodium Silicate Multilayers on Silica-Sphere-Coated Substrate—Facile Method to Prepare a Superhydrophobic Surface
Layer-by-Layer Deposition of Poly(diallyldimethylammonium chloride) and Sodium Silicate Multilayers on Silica-Sphere-Coated Substrate—Facile Method to Prepare a Superhydrophobic Surface
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DOI：
10.1021/cm062535i
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发表时间：
2007-01
影响因子：
8.6
通讯作者：
Lianbin Zhang;Huang Chen;and Junqi Sun;Jia-cong Shen
中科院分区：
文献类型：
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作者：
Lianbin Zhang;Huang Chen;and Junqi Sun;Jia-cong Shen
采用逐层沉积法在二氧化硅微球表面制备了聚二烯丙基二甲基氯化铵（PDDA）/硅酸钠多层膜，并对其进行了表面处理。首先，制备含有松散堆叠的600和220 nm的二氧化硅球的二氧化硅球涂覆的基底，并用SiCl 4交联。然后，PDDA与硅酸钠交替组装在二氧化硅球涂覆的表面上，以制备微米和纳米结构的分级表面。扫描电子显微镜（SEM）图像验证了5-双层PDDA/硅酸钠多层膜的沉积导致形成微米和纳米结构的分级表面。通过化学气相沉积一层氟烷基硅烷，成功地制备出了水接触角为157.1°，滑动角为3.1°的超疏水表面。该方法原料易得，操作简单，可用于工业生产。
A facile method for preparing a superhydrophobic surface was developed by layer-by-layer (LbL) deposition of poly(diallyldimethylammonium chloride) (PDDA)/sodium silicate multilayer films on a silica-sphere-coated substrate followed with a fluorination treatment. First, a silica-sphere-coated substrate that contains loosely stacked silica spheres of 600 and 220 nm was prepared and cross-linked with SiCl4. PDDA was then alternately assembled with sodium silicate on the silica-sphere-coated surface to prepare a micro- and nanostructured hierarchical surface. Scanning electron microscopy (SEM) images verify that the deposition of a 5-bilayer PDDA/sodium silicate multilayer film leads to the formation of a micro- and nanostructured hierarchical surface. After chemical vapor deposition of a layer of fluoroalkylsilane, a superhydrophobic surface with a water contact angle of 157.1° and sliding angle of 3.1° was successfully fabricated. The easy availability of the materials and simplicity of this method might m...