物理化学学报 >> 2007, Vol. 23 >> Issue (08): 1296-1300.doi: 10.3866/PKU.WHXB20070831

研究简报 上一篇    下一篇

复制模塑法制备超疏水表面及其应用

周明; 郑傲然; 杨加宏   

  1. 江苏大学光子科学制造中心, 江苏 镇江 212013
  • 收稿日期:2007-01-19 修回日期:2007-03-20 发布日期:2007-08-03
  • 通讯作者: 周明 E-mail:zm_laser@126.com

Superhydrophobic Surfaces Fabricated by Replica Molding and Its Applications

ZHOU Ming; ZHENG Ao-Ran; YANG Jia-Hong   

  1. Photonics Fabrication Science Center, Jiangsu University, Zhenjiang 212013, Jiangsu Province, P. R. China
  • Received:2007-01-19 Revised:2007-03-20 Published:2007-08-03
  • Contact: ZHOU Ming E-mail:zm_laser@126.com

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摘要： 设计并利用复制模塑法制备了两种具有不同几何结构的聚二甲基硅氧烷(PDMS)粗糙表面, 即方形柱结构表面与平行光栅结构表面. 扫描电镜观察结果表明, 制备的样品表面精细度较高. 利用接触角测量仪测得, 水滴在方形柱和平行光栅这两种PDMS微结构表面上的接触角分别为(154.6±0.7)°和(160.2±1.9)°, 滚动角分别≤6°和≤3°, 达到超疏水的标准. 研究血小板在这两种PDMS微结构表面与PDMS光滑表面上的粘附行为, 实验结果表明超疏水表面可以显著减少血小板的粘附, 而且不容易引起血小板变形, 具有良好的血液相容性. 同时分析并解决了样品制备过程中容易出现的表面微结构图案脱落、开裂的问题. 上述实验结果表明, 这种超疏水材料有望应用于工农业生产与生物工程领域.

关键词: 复制模塑法, 超疏水, 接触角, 细胞粘附

Abstract: Two kinds of poly(dimethylsiloxane) (PDMS) rough surfaces with different geometries which were square pillars and parallel grating were designed and fabricated by replica molding (REM). Scanning electron microscope (SEM) images showed that the fabricated samples had high fidelity. The contact angles of water droplet on the PDMS square pillars surface and parallel grating surface were (154.6依0.7)° and (160.2依1.9)°, respectively, and the sliding angles were not larger than 6° and 3°, respectively, which attained to the standard of superhydrophobicity. The experimental result of blood platelets adhesion demonstrated that these two superhydrophobic PDMS rough surfaces had better blood compatibility than PDMS planar surface. The crazing and shedding of microstructures in the replica molding were also analyzed and discussed. All results showed that these superhydrophobic materials may be used in industrial and agricultural fields and bioengineering field.

Key words: Replica molding, Superhydrophobicity, Contact angle, Cell adhesion