论文信息 - Determination of ultra‐low vapor pressures by submicron droplet evaporation

Determination of ultra‐low vapor pressures by submicron droplet evaporation

Vapor pressures as low as of order 10−8 mm Hg (10−10 atm) have been determined by measuring the diffusion‐controlled evaporation rates of single submicron droplets suspended in an electric field in the path of a laser beam. Using Mie theory to ascertain the droplet radius as a function of time from light‐scattering data, the vapor pressures of dioctyl phthalate (DOP), dibutyl sebacate (DBS), and dibutyl phthalate (DBP) have been determined at temperatures near room temperature. In addition to vapor pressures, heats of vaporization and Lennard‐Jones molecular interaction parameters are determined from the experiments.

[1] E. Davis,et al. Determination of diffusion coefficients by submicron droplet evaporation , 1977 .

[2] V. K. Mer,et al. A direct test of Kelvin's equation connecting vapour pressure and radius of curvature , 1952 .

[3] P. A. Small,et al. The vapour pressures of some high boiling esters , 1948 .

[4] I. Stranski,et al. The mechanism of evaporation , 1956 .

[5] S. Chandra,et al. CONDENSATION COEFFICIENTS OF SILVER, GOLD, AND COPPER IN VACUUM DEPOSITION , 1958 .

[6] N. Chen,et al. New Generalized Equation for Gas Diffusion Coefficient. , 1962 .

[7] E. Davis,et al. Knudsen aerosol evaporation , 1976 .

[8] F. H. Verhoek,et al. Vapor Pressures and Accommodation Coefficients of Four Non-Volatile Compounds. The Vapor Pressure of Tri-m-cresyl Phosphate over Polyvinyl Chloride Plastics , 1939 .

[9] C. F. Curtiss,et al. Molecular Theory Of Gases And Liquids , 1954 .

[10] Edward A. Grens,et al. Evaluation of parameters for nonlinear thermodynamic models , 1978 .

[11] R. Jacobs,et al. Determination of Vapor Pressures Below 10−3 mm Hg , 1947 .

[12] E. Davis,et al. Submicron droplet evaporation in the continuum and non-continuum regimes , 1978 .