Chemical Modification and Attempted Polymerization of Self-Assembled Monolayers of Hexadecanedioic Acid at Aluminum Surfaces.

Abstract

A self-assembled monolayer (SAM) of hexadecanedioic acid (HDDA) was prepared on an aluminum substrate for purposes of preventing or retarding the consequences of atmospheric corrosion. To enhance the protective qualities of the film, a scheme was developed to polymerize the exposed carboxylic acid functional groups, while enhancing the thickness of the film. To accomplish this, an attempt was made to cross-link the HDDA with octyltrichlorosilane (OTS). Subsequent experiments using a perfluorinated carboxylic acid as the base layer suggest that the OTS is aggressive enough toward the aluminum surface to completely remove the underlying organic SAM and displace it with siloxane (Si-O) linkages at the metal surface. Polarization modulated Fourier transform infrared absorption spectroscopy (PM-FTRIRRAS) and contact angle measurements confirm the displacement.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1997
Accession Number
ADA331712

Entities

People

  • Jeffrey P. Rasimas
  • Lawrence D. Seger
  • Robert Fifer
  • Rose Pesce-rodriquez

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Aluminum Oxides
  • Carboxylic Acids
  • Chemical Synthesis
  • Chemistry
  • Commerce
  • Films
  • Materials
  • Measurement
  • Metals
  • Military Research
  • Monomolecular Films
  • Polarization
  • Polymerization
  • Self Assembled Monolayers
  • Self Assembly
  • Spectroscopy

Readers

  • Electrochemical Surface Science
  • Organic Chemistry
  • Polymer Science and Technology