Synytska Alla, Ionov Leonid, Dutschk Victoria, Stamm Manfred, Grundke Karina
Leibniz Institute of Polymer Research Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany.
Langmuir. 2008 Oct 21;24(20):11895-901. doi: 10.1021/la8010585. Epub 2008 Sep 18.
In this paper, we report on a systematic and thorough study of wetting phenomenon on regularly patterned surfaces fabricated from inorganic-organic hybrid "core-shell" particles of different radii (100 nm to 10 microm). Inorganic silica particles were modified through chemical anchoring of polymers and silanes with different hydrophobicities. Modified "core-shell" particles were assembled into regular hexagonally packed structures. The use of regular structured surfaces with specifically designed surface roughness allowed mathematic prediction of the wetting behavior according to existing models and its comparison with experimental observations. It was shown that the character of the wetting behavior varies with the particles size and the chemical nature of the surface immobilized substance. For the regular particle assemblies, an increase in the vertical roughness was achieved with increasing particle radius, but without changing the Wenzel roughness factor.
在本文中，我们报告了对由不同半径（100纳米至10微米）的无机-有机杂化“核壳”颗粒制成的规则图案化表面上的润湿现象进行的系统而深入的研究。通过对具有不同疏水性的聚合物和硅烷进行化学锚固来改性无机二氧化硅颗粒。将改性的“核壳”颗粒组装成规则的六边形堆积结构。使用具有特定设计表面粗糙度的规则结构化表面，可以根据现有模型对润湿行为进行数学预测，并将其与实验观察结果进行比较。结果表明，润湿行为的特征随颗粒尺寸和表面固定物质的化学性质而变化。对于规则的颗粒组装体，随着颗粒半径的增加，垂直粗糙度增加，但文泽尔粗糙度因子不变。
