Residual Hydrogen Determination in Perfluoropolyalkylethers Using Fourier Transform Infrared and Proton Nuclear Magnetic Resonance Spectroscopies
Document Type
Article
Publication Date
1995
Publication Source
Applied Spectroscopy
Abstract
The residual hydrogen content of several perfluoropolyalkylether base fluids has been determined with the use of proton nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopies. The analysis of standard samples gives a linear calibration curve for hydrogen concentrations between 0.5 and 500 ppm for both FT-IR and NMR. The two methods have similar detection limits of about 1 ppm. Analysis of identical samples of Krytox 143 AC and Krytox 143 AZ by both methods gives results which are in excellent agreement. The two methods also provide information about the chemical environment in which the hydrogen is located. In both of the Krytox samples, the hydrogen is located in CFH groups within the polymer chain. Index Headings: Perfluoropolyalkylether (PFPAE); FT-IR; NMR; Residual hydrogen.
Inclusive pages
1474-1477
ISBN/ISSN
0003-7028
Document Version
Published Version
Copyright
Copyright © 1995, OSA, the Optical Society
Publisher
The Optical Society
Volume
49
Peer Reviewed
yes
Issue
10
eCommons Citation
Liang, Jim; Roselius, Mark; and Johnson, David W., "Residual Hydrogen Determination in Perfluoropolyalkylethers Using Fourier Transform Infrared and Proton Nuclear Magnetic Resonance Spectroscopies" (1995). Chemistry Faculty Publications. 37.
https://ecommons.udayton.edu/chm_fac_pub/37
COinS
Comments
The authors acknowledge the support of this project by the Materials Directorate of Wright Laboratory and by the Air Force Office of Scientific Research through its Summer Faculty Research Program at Wright-Patterson Air Force Base. NMR instrumentation used in this study was provided by a donation from Procter and Gamble to the University of Dayton. The authors would also like to express their appreciation to Dr. K. J. Eisentraut, Ms. L. J. Gschwender, and Mr. C. E. Snyder Jr., for assistance and encouragement.