Adsorption of polyphosphonates on native aluminum oxide

Reinaldo C. Bazito, Daniel Buttry

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We have studied the adsorption of polyphosphonates synthesized from polyamines (dendrimers, hyperbranched polymers, linear polymers) and monomeric hydrophobic phosphonates on the native aluminum oxide on the surface of the aluminum alloy AA2024-T3. FTIR measurements showed that this adsorption is effective and highly improved by the coordination of the multifunctional phosphonates with zirconium ions. SEM images of the alloys after the adsorption experiments indicated that significant surface corrosion occurred for the polyphosphonate/zirconium treatment, but no sign of corrosion was found after the monomeric hydrophobic phosphonate treatment. Potentiostatic measurements of O2 reduction in a wall-jet flow cell showed that the polyphosphonates highly activated the alloy surface toward dioxygen reduction, whereas the monomeric hydrophobic phosphonate actually inhibited this reaction.

Original languageEnglish (US)
Title of host publicationProceedings - Electrochemical Society
EditorsV.I. Birss, L.D. Burke, A.R. Hillman, R.S. Lillard
Pages241-250
Number of pages10
Volume25
Publication statusPublished - 2003
Externally publishedYes
EventSurface Oxide Films - Proceedings of the International Symposium - Orlando, FL., United States
Duration: Oct 12 2003Oct 17 2003

Other

OtherSurface Oxide Films - Proceedings of the International Symposium
CountryUnited States
CityOrlando, FL.
Period10/12/0310/17/03

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Bazito, R. C., & Buttry, D. (2003). Adsorption of polyphosphonates on native aluminum oxide. In V. I. Birss, L. D. Burke, A. R. Hillman, & R. S. Lillard (Eds.), Proceedings - Electrochemical Society (Vol. 25, pp. 241-250)