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首页> 外文期刊>International journal of nanoscience >SURFACE FORCES AND ADHESION BETWEEN ELECTROLYTIC COPPER CATHODE SURFACES AND MICROSPHERE SURFACES OF GLASS AND POLYSTYRENE IN AQUEOUS ELECTROLYTE SOLUTIONS
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SURFACE FORCES AND ADHESION BETWEEN ELECTROLYTIC COPPER CATHODE SURFACES AND MICROSPHERE SURFACES OF GLASS AND POLYSTYRENE IN AQUEOUS ELECTROLYTE SOLUTIONS

机译：电解质溶液中铜和聚苯乙烯的电解铜阴极表面和微球表面的表面力和粘附

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摘要

Surface forces and adhesion between electrolytic copper cathode surfaces and sphere surfaces of glass and polystyrene were measured with an atomic force microscope (AFM) in water and in aqueous medium containing 10{sup}(-4), 10{sup}(-3) and 10{sup}(-2) M sodium chloride at ambient temperature. Two types of copper surfaces were considered, oxidized and just-polished. Copper surfaces are submicroscopically rough and so at "contact", a film of intervening fluid separates substrate from probe. At close proximity, the interaction of the copper surfaces with either of the two probes is repulsive and such that extending and retracting force curves are essentially hysteresis-free. At higher separations, extending force curves for any probe-substrate combination were markedly repulsive and DLVO type. The higher the electrolyte concentration, the lower the range of the repulsive force. The system polystyrene-polished substrate displayed contact jumps for the higher electrolyte concentrations considered here, thus suggesting true adhesion between the surfaces. Strong and extremely long-ranged adhesive behavior were measured for the interaction between glass probes and oxidized copper substrates in low salt concentration solutions; at the origin are submicroscopic bubbles or cavities trapped between the surfaces and stabilized by the chemical heterogeneity of the interacting surfaces. A long-ranged, although weak, attractive interaction between polystyrene probes and just-polished copper substrates in aqueous salt solution belongs to the interacting surfaces although the intensity and range seems enhanced by the formation of bubbles.
机译：用原子力显微镜（AFM）在水中和含有10 {sup}（-4），10 {sup}（-3）的水性介质中测量电解铜阴极表面与玻璃和聚苯乙烯的球体表面之间的表面力和粘附力和在环境温度下的10 {sup}（-2）M氯化钠。考虑了两种类型的铜表面：氧化的和刚刚抛光的。铜表面在亚显微镜下是粗糙的，因此在“接触”时，一层中间的流体膜将基材与探针分开。在非常接近的情况下，铜表面与两个探针中的任一个的相互作用都是排斥的，使得延伸和收缩力曲线基本上没有滞后。在更高的分离距离下，任何探针-底物组合的延伸力曲线均具有明显的排斥力和DLVO类型。电解质浓度越高，排斥力的范围越小。系统聚苯乙烯抛光的基材在此处考虑的较高电解质浓度下显示出接触跳变，因此表明表面之间具有真正的附着力。在低盐浓度溶液中，测量了玻璃探针与氧化铜基板之间相互作用的强而长距离的粘合行为;最初是在表面之间捕获并通过相互作用表面的化学异质性稳定的亚微观气泡或空腔。尽管在强度和范围上似乎会通过气泡的形成而增强，但聚苯乙烯探针与盐水溶液中刚打磨过的铜基板之间的长距离的，尽管微弱的，有吸引力的相互作用属于相互作用的表面。

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