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首页> 外文期刊>Journal of nano research >Electrokinetic Potential for Characterization of Nanosctructured Solid Flat Surfaces
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Electrokinetic Potential for Characterization of Nanosctructured Solid Flat Surfaces

机译：表征纳米结构固体平坦表面的电动势

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摘要

Electrokinetic potential (zeta potential) is a characteristic parameter for description of the surface chemistry of solid flat materials and it can be used for a fast analysis of materials modified by different chemical or physical methods. Due to its sensitivity, zeta potential is able to distinguish surface modified by coating with monolayers of various materials or nanostructures created after plasma treatment. Also metal nanostructures deposited on surfaces can be characterized by zeta potential. It can also be used for isoelectric point determination of materials. We present data on zeta potential in 0.001 mol/dm~3 KC1 at constant pH≈7.0 and also in pH range (2.5-7.0) for isoelectric point determination for pristine polymers PET, PTFE, PS, LDPE, HDPE, PLLA, PVF, PVDF, PMP and polyimides (Upilex R, Upilex S, Kapton). The zeta potential of selected polymers, modified by plasma and by chemical coatings (e.g. by biphenyldithiol or polyethyleneglycol) or by gold deposition was measured too. Zeta potentials of these modified materials were also studied to confirmation that electrokinetic analysis is acceptable method for their fast description.
机译：电动势（ζ电位）是描述固体扁平材料表面化学特性的特征参数，可用于快速分析通过不同化学或物理方法改性的材料。由于它的灵敏度，ζ电位能够区分在等离子体处理后通过涂以各种材料或纳米结构的单层涂层而修饰的表面。沉积在表面上的金属纳米结构也可以通过ζ电位来表征。它也可以用于确定材料的等电点。我们提供了0.001 mol / dm〜3 KCl在恒定pH≈7.0时以及在pH范围（2.5-7.0）中的zeta电位数据，用于测定原始聚合物PET，PTFE，PS，LDPE，HDPE，PLLA，PVF， PVDF，PMP和聚酰亚胺（Upilex R，Upilex S，Kapton）。还测量了通过等离子体和化学涂层（例如通过联苯二硫醇或聚乙二醇）或通过金沉积改性的所选聚合物的ζ电位。还研究了这些改性材料的Zeta电位，以确认电动分析是可以快速描述的可接受方法。

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