Impact of Humidity on Adhesion between Rough Surfaces

Autor:	R. A. Quon, T. K. Vanderlick, and A. Ulman
Rok vydání:	2000
Předmět:	Chemistry Mineralogy Humidity Surface forces apparatus Surfaces and Interfaces Adhesion Quartz crystal microbalance Condensed Matter Physics Adsorption Chemical engineering Monolayer Electrochemistry General Materials Science Relative humidity Mica Spectroscopy
Zdroj:	Langmuir. 16:8912-8916
ISSN:	1520-5827 0743-7463
DOI:	10.1021/la000372l
Popis:	The surface forces apparatus was used to study the variation with relative humidity of adhesion between mica and rough gold films coated with either a hydrophobic or hydrophilic self-assembled monolayer (SAM). Pull-off forces, as a function of relative humidity, were measured between mica and gold coated with either n-octadecanethiol or 1-hydroxylunicosanethiol. For the alcohol-terminated SAM, pull-off forces increase from 370 mN/m (dry conditions) to 845 mN/m (saturated conditions). For the methyl-terminated SAM, pull-off forces increase from 160 mN/m (dry conditions) to 643 mN/m (saturated conditions). A quartz crystal microbalance was used to obtain adsorption isotherms on the two different SAMs. Angstrom-level changes in adsorbed layer thickness are associated with marked changes in measured adhesion forces.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d1acc14b0300660e7c95debc43ba3261 https://doi.org/10.1021/la000372l Zobrazit plný text záznamu