Colloid probe AFM and XPS study of time-dependent aging of amine plasma polymer coating in aqueous media

Anna Tarasova; Paul Hamilton-Brown; Thomas Gengenbach; Hans J. Griesser; Laurence Meagher

doi:10.1002/ppap.200700054

Colloid probe AFM and XPS study of time-dependent aging of amine plasma polymer coating in aqueous media

Anna Tarasova, Paul Hamilton-Brown, Thomas Gengenbach, Hans J. Griesser, Laurence Meagher

Research output: Contribution to journal › Article › Research › peer-review

42 Citations (Scopus)

Abstract

Effects of surface oxidation on the properties of amine plasma polymer (pp) films in aqueous media have not been widely studied, despite their use to control bio-interfacial properties. Changes in the surface composition of allylamine and heptylamine pp films, on water exposure, were followed by XPS. The surface potential was monitored via AFM measurements and comparison to DLVO theory. Analysis of XPS data implied high initial oxidation rates (rapid quenching of surface radicals). Oxidation of the pp films followed evolution of carbon-based rather than nitrogen-based species. Analysis of AFM force data showed changes in the sign of the surface potential with aging from positive to negative. Implications, for example for surface immobilization of molecules in aqueous environments, are also discussed. A graph is presented.

Original language	English
Pages (from-to)	175-185
Number of pages	11
Journal	Plasma Processes and Polymers
Volume	5
Issue number	2
DOIs	https://doi.org/10.1002/ppap.200700054
Publication status	Published - 1 Feb 2008
Externally published	Yes

Keywords

Ageing
Amine
Atomic force microscopy (AFM)
Plasma polymerization
Surface charge
X-ray photoelectron spectroscopy (XPS)

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10.1002/ppap.200700054

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title = "Colloid probe AFM and XPS study of time-dependent aging of amine plasma polymer coating in aqueous media",

abstract = "Effects of surface oxidation on the properties of amine plasma polymer (pp) films in aqueous media have not been widely studied, despite their use to control bio-interfacial properties. Changes in the surface composition of allylamine and heptylamine pp films, on water exposure, were followed by XPS. The surface potential was monitored via AFM measurements and comparison to DLVO theory. Analysis of XPS data implied high initial oxidation rates (rapid quenching of surface radicals). Oxidation of the pp films followed evolution of carbon-based rather than nitrogen-based species. Analysis of AFM force data showed changes in the sign of the surface potential with aging from positive to negative. Implications, for example for surface immobilization of molecules in aqueous environments, are also discussed. A graph is presented.",

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AU - Tarasova, Anna

AU - Hamilton-Brown, Paul

AU - Gengenbach, Thomas

AU - Griesser, Hans J.

AU - Meagher, Laurence

PY - 2008/2/1

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N2 - Effects of surface oxidation on the properties of amine plasma polymer (pp) films in aqueous media have not been widely studied, despite their use to control bio-interfacial properties. Changes in the surface composition of allylamine and heptylamine pp films, on water exposure, were followed by XPS. The surface potential was monitored via AFM measurements and comparison to DLVO theory. Analysis of XPS data implied high initial oxidation rates (rapid quenching of surface radicals). Oxidation of the pp films followed evolution of carbon-based rather than nitrogen-based species. Analysis of AFM force data showed changes in the sign of the surface potential with aging from positive to negative. Implications, for example for surface immobilization of molecules in aqueous environments, are also discussed. A graph is presented.

AB - Effects of surface oxidation on the properties of amine plasma polymer (pp) films in aqueous media have not been widely studied, despite their use to control bio-interfacial properties. Changes in the surface composition of allylamine and heptylamine pp films, on water exposure, were followed by XPS. The surface potential was monitored via AFM measurements and comparison to DLVO theory. Analysis of XPS data implied high initial oxidation rates (rapid quenching of surface radicals). Oxidation of the pp films followed evolution of carbon-based rather than nitrogen-based species. Analysis of AFM force data showed changes in the sign of the surface potential with aging from positive to negative. Implications, for example for surface immobilization of molecules in aqueous environments, are also discussed. A graph is presented.

KW - Ageing

KW - Amine

KW - Atomic force microscopy (AFM)

KW - Plasma polymerization

KW - Surface charge

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Colloid probe AFM and XPS study of time-dependent aging of amine plasma polymer coating in aqueous media

Abstract

Keywords

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