Techniques for the Analysis of Complex Oil, Water and Surfactant Mixtures
Abstract
The work revealed that components found in Navy relevant oils and fuel can contribute to the stability of emulsions. Water properties including conductivity, pH, and surface tension were altered after exposure to Navy relevant oils for 24 h. UV and GC-MS data suggested the transport of aromatic and alkane molecules with heteroatoms from the oil to aqueous phase. The analysis of the mass spectrum from GC-MS along with IR analysis revealed that aromatic and alkane molecules contain oxygen and nitrogen functional groups, which would provide surfactant like behavior, leach into water. Emulsion stability experiments showed compounds found in DFM are most likely to stabilize emulsions, followed by Lube Oil 2190 and then by Lube Oil 9250. Finally, model oil systems with one additive showed significant decreases in creaming rate, stabilization of emulsions, with only 1-20 ppm in the water phase. This highlights how impactful a small amount of these compounds can be at low concentration.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 2022
- Accession Number
- AD1164790
Entities
People
- Grant C. Daniels
Organizations
- United States Naval Research Laboratory