Chemical and physical processes in the retention of functional groups in plasma polymers studied by plasma phase mass spectroscopy

Physical Chemistry Chemical Physics : PCCP
Joonas RyssyAndrew Michelmore

Abstract

Surface engineering of functionalised polymer films is a rapidly expanding field of research with cross disciplinary implications and numerous applications. One method of generating functionalised polymer films is radio frequency induced plasma polymerisation which provides a substrate independent coating. However, there is currently limited understanding surrounding chemical interactions in the plasma phase and physical interactions at the plasma-surface interface, and their effect on functional group retention in the thin film. Here we investigate functionalised plasma polymer films generated from four precursors containing primary amines. Using XPS and fluorine tagging with 4-(trifluoromethyl)benzaldehyde, the primary amine content of plasma polymer films was measured as a function of applied power at constant precursor pressure. The results were then correlated with analysis of the plasma phase by mass spectrometry which showed loss of amine functionality for both neutral and ionic species. Surface interactions are also shown to decrease primary amine retention due to abstraction of hydrogen by high energy ion impacts. The stability of the plasma polymers in aqueous solution was also assessed and is shown to be precursor de...Continue Reading

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Citations

Jan 10, 2017·ACS Applied Materials & Interfaces·Giles T S KirbyLouise E Smith
Apr 1, 2017·Journal of Chemical Theory and Computation·Changjian XieHua Guo
Feb 9, 2017·Physical Chemistry Chemical Physics : PCCP·Solmaz SaboohiRobert D Short
Aug 3, 2017·Chemical Society Reviews·Dardan Hetemi, Jean Pinson
Aug 20, 2020·Macromolecular Rapid Communications·Bin NiMin-Hui Li
Dec 10, 2016·ACS Applied Materials & Interfaces·Louise E SmithRobert D Short
Nov 12, 2019·The Journal of Physical Chemistry Letters·Solmaz SaboohiAndrew Michelmore

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