effect of alkyl chain length on carboxylic acid sams on ti-6al-4v

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ID: 251761
2012
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Abstract
The formation of methyl-terminated carboxylic acid self-assembled monolayers (SAMs) with even numbers of carbons, from eighteen to thirty, was investigated on the oxide surface of Ti-6Al-4V and component metal oxides. Modified surfaces were characterized using diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and contact angle analysis. Infrared spectroscopy indicated that using aerosol spray deposition techniques, stable, <em>all-trans</em> SAMs of octacosanoic (28 carbons) and triacontanoic (30 carbons) acids were formed on the alloy. Films were similarly formed on titanium and aluminum oxide. The surface of vanadium oxide exhibited limited reactivity. MALDI-TOF MS confirmed that formed films were monolayers, without multilayers or aggregates present. Water contact angles are indicative of the presence of hydrophobic methyl groups at the interface. This stable carboxylic acid SAM formation could be a useful alternative to phosphonic acid SAMs for corrosion and other applications.
Reference Key
buckholtz2012materialseffect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Gavin A. Buckholtz;Ellen S. Gawalt
Journal Nature Materials
Year 2012
DOI
10.3390/ma5071206
URL
http://www.mdpi.com/1996-1944/5/7/1206
Keywords
ti-6al-4v electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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