ChemInformVolume 19, Issue 41 Article ChemInform Abstract: Self-Diffusion in the Compressed, Highly Viscous Liquid 2-Ethylhexyl Benzoate N. A. WALKER, N. A. WALKER Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorD. M. LAMB, D. M. LAMB Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorS. T. ADAMY, S. T. ADAMY Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorJ. JONAS, J. JONAS Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorM. P. DARE-EDWARDS, M. P. DARE-EDWARDS Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this author N. A. WALKER, N. A. WALKER Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorD. M. LAMB, D. M. LAMB Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorS. T. ADAMY, S. T. ADAMY Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorJ. JONAS, J. JONAS Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this authorM. P. DARE-EDWARDS, M. P. DARE-EDWARDS Sch. Chem. Sci., Univ. Ill., Urbana, IL 61801, USASearch for more papers by this author First published: October 11, 1988 https://doi.org/10.1002/chin.198841075Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume19, Issue41October 11, 1988 RelatedInformation
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-diffusion in the compressed, highly viscous liquid 2-ethylhexyl benzoateN. A. Walker, D. M. Lamb, S. T. Adamy, J. Jonas, and M. P. Dare-EdwardsCite this: J. Phys. Chem. 1988, 92, 12, 3675–3679Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https://doi.org/10.1021/j100323a067RIGHTS & PERMISSIONSArticle Views120Altmetric-Citations45LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (582 KB) Get e-Alerts
Raman spectra of toluene at pressures up to 4.1 kbar and temperatures up to 100°C, have been studied. The frequency and intensity changes of the symmetric (ν6a) and antisymmetric (ν6b) ring breathing vibrations have been related principally to changes in density. Increasing density at constant temperature increases I(ν6b/ν6a) and increases the frequency of (ν6a) but has little effect on the frequency of ν6b. Increasing temperature at constant density decreases I(ν6b/ν6a) and increases the frequency of ν6a but has little effect on the frequency of ν6b. An explanation of the different intensity changes with density for these two bands is suggested in terms of the contrasting volume changes associated with the two modes.
The diamond anvil cell (DAC) has been used extensively in the study of solids and liquids at high pressure. For liquids it is necessary to use a metal gasket to retain the sample between the anvil faces. The pressure experienced by the fluid can be measured by including a small fragment of ruby, the fluorescence spectrum of which is sensitive to pressure. Several experimental arrangements for observing Raman spectra from a DAC have been tried. For 0° scattering, in which the laser passes straight through the cell, scattered light can be collected with an off-axis elliptical mirror which focuses it onto the entrance slit of the monochromator. Another technique uses a small mirror 15° off normal incidence to the DAC by which the laser is focused onto the sample. A lens then collects the near 180° scattered light and brings it to a focus at the monochromator.
Initial results of a novel Raman spectroscopic method for studying fluid lubricant characteristics in a simulated elastohydrodynamic contact are reported. The method uses a Raman microscope which allows spectra to be obtained from a small volume (∼ 0.1 nl) of lubricant entrapped in the elastic deformation formed when a loaded glass plate falls onto a lubricated steel ball. The work described here was undertaken to obtain direct pressure measurements from an entrapped fluid at equilibrium after the initial impact. Our results indicate that pressures in twofold excess of the maximum Hertzian pressure can be generated in ball-plate entrapments of the polyphenyl ether 5P4E. In addition 5P4E has been studied as a pure liquid and as a solution in CCl4 using a diamond anvil cell (DAC). Preliminary results on 2,4-dicyclohexyl-2-methylpentane studied using a DAC and a hydrostatic equilibrium cell are also described.
This chapter discusses some experimental methods used to measure pressure distribution in elastohydrodynamic lubrication (EHL) contacts. Most of these concentrate on results obtained from deposited manganin pressure gauges on one of the film bounding surfaces. A recent and very promising technique, which relies directly on the EHL film properties (Raman) to determine the pressure distribution, is discussed. Another alternative is mentioned, where an indirect measurement of the wanted pressure distribution is found from a number of discrete points that describe the film geometry.