|Present||Emeritus Senior Professor of Chemistry, Cedarville University|
Honors and Awards
- Faculty Advisor of the Year, Cedarville University - 20005
- Faculty Scholar of the Year, Cedarville College - 1990
- Distinguished Educator Award, Cedarville College Alumni Association - 1990
- CMA College Chemistry Teaching Award - 1993
- Faculty member of the Year, Cedarville College - 1973
- Organic Chemistry
- Research Methods in Chemistry
- Analytical Chemistry
- Physical Chemistry
- Physical Science
Refereed Journal Articles (36)
Effects of Linear PFPAE Decomposition Products on the Rolling Contact Fatigue Performance of M50 Tribology Letters (1999)
In bench tribology tests, the influence of lubricant decomposition products on the lubricated system and on lubricant performance are often overlooked, primarily because testing is performed in vented, or open, systems. However, the lubricant in ...
Effect of Humidity on Wear of M-50 Steel with a Branched Perfluoropolyalkylether Lubricant Tribology Letters (1999)
Humidity is an uncontrolled variable in many tribology tests. This report shows that changes in relative humidity can affect wear for all perfluoropolyalkylethers regardless of their molecular structure. Using a Cameron–Plint tribometer under controlled environmental ...
The Decomposition Reaction Path of a Linear PFPAE Under Tribological Conditions Tribology Letters (1998)
It has previously been shown using F nuclear magnetic resonance (NMR) spectroscopy that a linear perfluoropolyalkyl ether (PFPAE) fluid undergoes decomposition by a disproportionation reaction mechanism to form acid fluorides when heated in the presence ...
A Study of Boundary Lubrication This Films Produced from a Perfluoropolyalkylether Fluid on M-50 Surfaces Tribology Letters (1997)
Tribology experiments under controlled humidity were conducted using a Cameron-Plint tribometer with an M-50 cylinder sliding on an M-50 flat specimen in the presence of a linear perfluoropolyalkylether fluid. The tests were conducted at 100, ...
The Effect of Humidity on the Wear Behavior of Bearing Steels with Perfluoropolyalkylether Base Fluid and Formulations Tribology Transactions (1997)
A reciprocating tribometer and four-ball tribometer were used under controlled environmental conditions to determine the wear behavior of bearing steels with a linear perfluoropolyalkylether (PFPAE) lubricant which does not contain difluoroacetal groups. Formulated lubricants (base ...
Tribochemistry of a PEPAE Fluid on M-50 Surfaces by FTIR Spectroscopy Tribology Transactions (1996)
The tribochemistry of a linear perfluoropolyalkylether (PFPAE) resulting from sliding friction experiments was investigated by FTIR spectroscopy. The experiments were conducted on a Cameron-Plint tribometer under boundary lubrication conditions in a controlled humidity environment. An ...
Thermal-Oxidative Pretreatment and Evaluation of Poly(hexafluoropropene Oxide) Fluids Tribology Transactions (1995)
Two commercial poly(hexafluoropropene oxide) fluids were thermally pretreated at 343°C in pure oxygen. IR and NMR spectra indicate that this pretreatment was effective in removing hydrogen end-capped impurities. A decrease in the quantity of volatile ...
Tribological Characteristics of Perfluoropolyether Liquid Lubricants Under Sliding Conditions in High Vacuum Journal of Sythetic Lubrication (1994)
Tribological characteristics of three PFPEs (Fomblin Z, Demnum, and Krytox) were studied under high vacuum using a four-ball apparatus with 440C steel specimens. Fomblin Z and Demnum exhibited initial scuffing-like high friction whereas Krytox did ...
Determination of the Thermal Stability of Perfluoroalkylethers Science and Mathematics Faculty Publications (1990)
The thermal decomposition temperatures of several commercial and custom synthesized perfluoroalkylether fluids were determined with a computerized tensimeter. In general, the decomposition temperatures of the commercial fluids were all similar and significantly higher than those ...
Determination of the Thermal Stability of Fluids by Tensimetry: Instrumentation and Procedure Tribology Transactions (1990)
A computerized tensimeter and experimental procedure for determination of the thermal decomposition temperature (Td) of perfluoroalkylethers have been developed and tested. Both the apparatus and the procedure are described in detail. Results of testing with ...
Determination of the Thermal Stability of Perfluoroalkylethers by Tensimetry: Instrumentation and Procedure NASA Technical Memorandum (102116) (1989)
A computerized tensimeter and experimental procedure for determination of the thermal decomposition temperature (Td) of perfluoroalkylethers have been developed and tested. Both the I+ m apparatus and the procedure are described in detail. Results of ...
FTIR analysis of Aviation Fuel Deposits Science and Mathematics Faculty Publications (1984)
Five modes of operat1on (absorpt1on, em1ssion, single reflectance, attenuated total reflectance, and photoacoust1c) of a N1colet 7199 Fourier Transform Infrared Spectrophotometer have been 1nvest1gated in order to determ1ne which modes were most su1table for qualitative ...
Dipole-Stabilized Carbanions from Thioesters, Evidence for Stabilization by the Carbonyl Group Journal of the American Society (1978)
Reactions are reported which establish that metalation can occur a to the sulfur of methyl and ethyl thioesters to give synthetically useful species. The methyl thiobenzoates 4a, 4b, 4c, and methyl thiopivalate (4d) react with ...