Photo of James Vrentas

James Vrentas

Dow Professor Emeritus

Affiliation(s):

  • Chemical Engineering

8B Thomas Building

jsv1@psu.edu

814-863-4808

Personal or Departmental Website

Research Areas:

Interfaces and Surfaces, Separations and Transport

Interest Areas:

Diffusion, fluid mechanics, transport phenomena, polymer science and applied mathematics.

 
 

 

Education

  • BS, Chemical Engineering, University of Illinois, 1958
  • M.Ch.E., Chemical Engineering, University of Delaware, 1961
  • Ph D, Chemical Engineering, University of Delaware, 1963

Publications

Books

  • James S Vrentas and Christine M. Vrentas, 2013, Diffusion and Mass Transfer, CRC Press, Boca Raton, FL, USA, pp. 644 pages, 100 illustrations

Journal Articles

  • James S Vrentas and C. M. Vrentas, 2016, "Analysis of Shear Stress Growth Experiments for Linear Constitutive Equations", Chemical Engineering Communications, 203, (5), pp. 589-598
  • James S Vrentas and C. M. Vrentas, 2015, "Dependence of Heat Transfer in a Circular Tube with Prescribed Wall Flux on Peclet Number and on Heating Length", Chemical Engineering Communications, 202, (7), pp. 964-970
  • James S Vrentas and C. M. Vrentas, 2014, "Analysis of Plug Flow Reactors with Variable Mass Density", AIChE Journal, 60, (12), pp. 4185-4189
  • James S Vrentas and C. M. Vrentas, 2013, "Pressure Effects in Nonporous Membranes", Chemical Engineering Science, 104, pp. 473-483
  • James S Vrentas and C. M. Vrentas, 2007, "Axial Conduction with Boundary Conditions of the Mixed Type", Chemical Engineering Science, 62, (12), pp. 3104-3111
  • James S Vrentas and Christine M. Vrentas, 2007, "Restrictions on Friction Coefficients for Binary and Ternary Diffusion", Industrial & Engineering Chemistry Research, 46, (10), pp. 3422-3428
  • James S Vrentas and C. M. Vrentas, 2005, "Effect of the Polymer Glass Transition on the Chromatographic Retention Volumes", Journal of Applied Polymer Science, 97, (3), pp. 793-796
  • James S Vrentas and C. M. Vrentas, 2005, "Theoretical Aspects of Ternary Diffusion", Industrial & Engineering Chemistry Research, 44, (5), pp. 1112-1119
  • James S Vrentas and C. M. Vrentas, 2005, "Effect of Polymer Glass Transition on Chromatographic Retention Volumes", J. Applied Polym. Sci., 97, pp. 793-796
  • James S Vrentas and C. M. Vrentas, 2004, "Diffusion-Controlled Polymer Dissolution and Drug Release", Journal of Applied Polymer Science, 93, (1), pp. 92-99
  • James S Vrentas and C. M. Vrentas, 2004, "Exchange of Stabilities for Surface Tension Driven Convection", Chemical Engineering Science, 59, (21), pp. 4433-4436
  • James S Vrentas and C. M. Vrentas, 2004, "Theoretical Aspects of Fiber Spinning", Journal of Applied Polymer Science, 93, (2), pp. 986-993
  • James S Vrentas and C. M. Vrentas, 2003, "Prediction of the Molecular-Weight Dependence of Mutual Diffusion Coefficients in Polymer-Solvent Systems", Journal of Applied Polymer Science, 89, (10), pp. 2778-2779
  • James S Vrentas and C. M. Vrentas, 2003, "Prediction of Molecular Weight Dependence of Mutual Diffusion Coefficients in Polymer-Solvent Systems", J. Applied Polym. Sci., 89, pp. 2778
  • James S Vrentas and C. M. Vrentas, 2003, "Diffusion in Glassy Polymers", Journal of Polymer Science Part B: Polymer Physics, 41, (8), pp. 785-788
  • James S Vrentas and C. M. Vrentas, 2003, "Effect of Glass Transition on the Concentration Dependence of Self-Diffusion Coefficients", Journal of Applied Polymer Science, 89, (6), pp. 1682-1684
  • James S Vrentas and C. M. Vrentas, 2003, "Evaluation of the Free-Volume Theory of Diffusion", Journal of Polymer Science Part B: Polymer Physics, 41, (5), pp. 501-507
  • James S Vrentas and C. M. Vrentas, 2003, "Steady Viscoelastic Diffusion", Journal of Applied Polymer Science, 88, (14), pp. 3256-3263
  • James S Vrentas and C. M. Vrentas, 2002, "Transport in Nonporous Membranes", Chemical Engineering Science, 57, (19), pp. 4199-4208
  • James S Vrentas and C. M. Vrentas, 2001, "A General Theory for Diffusion in Purely Viscous Binary Fluid Mixtures", Chemical Engineering Science, 56, (15), pp. 4571-4586
  • James S Vrentas and C. M. Vrentas, 2001, "Viscoelastic Diffusion", Journal of Polymer Science Part B: Polymer Physics, 39, (13), pp. 1529-1547
  • James S Vrentas and C. M. Vrentas, 2000, "Asymptotic Solutions for Laminar Dispersion in Circular Tubes", Chemical Engineering Science, 55, (4), pp. 849-855
  • James S Vrentas and C. M. Vrentas, 2000, "Prediction of Mutual Diffusion Coefficients for Polymer-Solvent Systems", Journal of Applied Polymer Science, 77, (14), pp. 3195-3199
  • James S Vrentas and C. M. Vrentas, 1999, "Differential Sorption in Glassy Polymers", Journal of Applied Polymer Science, 71, (9), pp. 1431-1440
  • James S Vrentas and C. M. Vrentas, 1999, "Validity of the First-Order Fluid Model", Journal of Applied Polymer Science, 73, (4), pp. 547-552
  • James S Vrentas and C. M. Vrentas, 1998, "Dissolution of Rubbery and Glassy Polymers", Journal of Polymer Science Part B: Polymer Physics, 36, (14), pp. 2607-2614
  • James S Vrentas and C. M. Vrentas, 1998, "Integral Sorption in Glassy Polymers", Chemical Engineering Science, 53, (4), pp. 629-638
  • James S Vrentas and C. M. Vrentas, 1998, "Integral Sorption in Rubbery Polymers", Journal of Polymer Science Part B: Polymer Physics, 36, (1), pp. 171-180
  • James S Vrentas and C. M. Vrentas, 1998, "Predictive Methods for Self-Diffusion and Mutual Diffusion Coefficients in Polymer-Solvent Systems", European Polymer Journal, 34, (5-6), pp. 797-803
  • James S Vrentas and C. M. Vrentas, 1998, "Slow Bubble Growth and Dissolution in a Viscoelastic Fluid", Journal of Applied Polymer Science, 67, (12), pp. 2093-2103
  • James S Vrentas and C. M. Vrentas, 1998, "Temperature Dependence of Partition Coefficients for Polymer-Solvent Systems", Macromolecules, 31, (16), pp. 5539-5541
  • James S Vrentas and C. M. Vrentas, 1997, "An Exact Solution for Unsteady Diffusion in a Block Copolymer with a Highly Oriented Lamellar Morphology", Chemical Engineering Science, 52, (6), pp. 985-992
  • James S Vrentas, C. M. Vrentas and W. J. Huang, 1997, "Anticipation of Anomalous Effects in Differential Sorption Experiments", Journal of Applied Polymer Science, 64, (10), pp. 2007-2013
  • James S Vrentas and C. M. Vrentas, 1997, "Strain-Coupling Effects in Steady Flows", Journal of Applied Polymer Science, 64, (4), pp. 689-697
  • James S Vrentas and C. M. Vrentas, 1996, "Axial Moment Analyses of Convective Heat and Mass Transfer Processes", Chemical Engineering Science, 51, (6), pp. 921-929
  • James S Vrentas, C. M. Vrentas and N. Faridi, 1996, "Effect of Solvent Size on Solvent Self-Diffusion in Polymer-Solvent Systems", Macromolecules, 29, (9), pp. 3272-3276
  • James S Vrentas and C. M. Vrentas, 1996, "Hysteresis Effects for Sorption in Glassy Polymers", Macromolecules, 29, (12), pp. 4391-4396
  • James S Vrentas and C. M. Vrentas, 1996, "Surface Concentration Effects in the Drying of Solvent-Coated Polymer Films", Journal of Applied Polymer Science, 60, (7), pp. 1049-1055
  • James S Vrentas and C. M. Vrentas, 1995, "Determination of Free-Volume Parameters for Solvent Self-Diffusion in Polymer-Solvent Systems", Macromolecules, 28, (13), pp. 4740-4741
  • James S Vrentas and C. M. Vrentas, 1995, "Strain-Coupling Effects in Start-up Experiments", Rheologica Acta, 34, (1), pp. 109-114
  • James S Vrentas and C. M. Vrentas, 1995, "Strain-Coupling Effects in Steady Planar Extension", Rheologica Acta, 34, (3), pp. 281-287
  • James S Vrentas and C. M. Vrentas, 1995, "Unsteady Flows of First-Order Fluids", Industrial & Engineering Chemistry Research, 34, (10), pp. 3203-3207
  • James S Vrentas and C. M. Vrentas, 1994, "Drying of Solvent-Coated Polymer-Films", Journal of Polymer Science Part B: Polymer Physics, 32, (1), pp. 187-194
  • James S Vrentas and C. M. Vrentas, 1994, "Evaluation of a Sorption Equation for Polymer-Solvent Systems", Journal of Applied Polymer Science, 51, (10), pp. 1791-1795
  • James S Vrentas and C. M. Vrentas, 1994, "Solvent Self-Diffusion in Glassy Polymer-Solvent Systems", Macromolecules, 27, (20), pp. 5570-5576
  • James S Vrentas and C. M. Vrentas, 1994, "Solvent Self-Diffusion in Rubbery Polymer-Solvent Systems", Macromolecules, 27, (17), pp. 4684-4690
  • James S Vrentas and C. M. Vrentas, 1993, "A New Equation Relating Self-Diffusion and Mutual Diffusion Coefficients in Polymer-Solvent Systems", Macromolecules, 26, (22), pp. 6129-6131
  • James S Vrentas, C. M. Vrentas and I. H. Romdhane, 1993, "Analysis of Inverse Gas Chromatography Experiments", Macromolecules, 26, (24), pp. 6670-6672
  • James S Vrentas, C. M. Vrentas and J. L. Duda, 1993, "Comparison of Free-Volume Theories", Polymer Journal, 25, (1), pp. 99-101
  • James S Vrentas and C. M. Vrentas, 1993, "Energy Effects for Solvent Self-Diffusion in Polymer-Solvent Systems", Macromolecules, 26, (6), pp. 1277-1281
  • James S Vrentas and C. M. Vrentas, 1993, "Evaluation of Free-Volume Theories for Solvent Self-Diffusion in Polymer-Solvent Systems", Journal of Polymer Science Part B: Polymer Physics, 31, (1), pp. 69-76
  • James S Vrentas, C. M. Vrentas and D. C. Venerus, 1993, "Strain-Coupling Effects in Branched Polymers", Rheologica Acta, 32, (1), pp. 74-81
  • James S Vrentas and C. M. Vrentas, 1993, "Strain-Coupling Effects in Extensional Flows", Journal of Applied Polymer Science, 49, (4), pp. 733-740
  • James S Vrentas, C. M. Vrentas and D. C. Venerus, 1992, "Evaluation of an Integral Constitutive Equation for Nonlinear Viscoelasticity", Journal of Non-Newtonian Fluid Mechanics, 42, (3), pp. 351-368
  • James S Vrentas and C. M. Vrentas, 1992, "Fickian Diffusion in Glassy Polymer-Solvent Systems", Journal of Polymer Science Part B: Polymer Physics, 30, (9), pp. 1005-1011
  • James S Vrentas and C. M. Vrentas, 1992, "Isotherm Shape for Penetrant Sorption in Glassy Polymers", Journal of Applied Polymer Science, 45, (8), pp. 1497-1500
  • James S Vrentas, D. C. Venerus and C. M. Vrentas, 1991, "An Exact Analysis of Reservoir Effects for Rotational Viscometers", Chemical Engineering Science, 46, (1), pp. 33-37
  • James S Vrentas, 1991, "Correction to Step-Strain Deformations for Viscoelastic Fluids: Formulation of a Strain-Coupling Constitutive Equation", Journal of Polymer Science Part B: Polymer Physics, 29, (9), pp. 1169-1169
  • James S Vrentas, C. M. Vrentas and D. C. Venerus, 1991, "Evaluation of the Wagner Irreversible Constitutive Equation", Rheologica Acta, 30, (2), pp. 175-179
  • James S Vrentas, D. C. Venerus and C. M. Vrentas, 1991, "Finite Amplitude Oscillations of Viscoelastic Fluids", Journal of Non-Newtonian Fluid Mechanics, 40, (1), pp. 1-24
  • James S Vrentas and C. M. Vrentas, 1991, "Solvent Self-Diffusion in Crosslinked Polymers", Journal of Applied Polymer Science, 42, (7), pp. 1931-1937
  • James S Vrentas and C. M. Vrentas, 1991, "Sorption in Glassy Polymers", Macromolecules, 24, (9), pp. 2404-2412
  • James S Vrentas, D. C. Venerus and C. M. Vrentas, 1991, "Step-Strain Deformations for Viscoelastic Fluids: Formulation of a Strain-Coupling Constitutive Equation", Journal of Polymer Science Part B: Polymer Physics, 29, (5), pp. 537-545
  • James S Vrentas, C. M. Vrentas and D. C. Venerus, 1991, "Utilization of Double-Step Shear Strain Experiments in the Evaluation of Rheological Constitutive Equations", Journal of Non-Newtonian Fluid Mechanics, 40, (3), pp. 381-387
  • James S Vrentas, C. M. Vrentas and D. C. Venerus, 1990, "Consistency Relations for Double-Step Strain Experiments", Macromolecules, 23, (24), pp. 5133-5136
  • James S Vrentas, D. C. Venerus and C. M. Vrentas, 1990, "Consistency Tests for Start-up and Cessation Deformations of Viscoelastic Fluids", Rheologica Acta, 29, (4), pp. 298-309
  • James S Vrentas and C. M. Vrentas, 1990, "Influence of Solvent Size on the Diffusion Process for Polymer-Solvent Systems", Journal of Polymer Science Part C: Polymer Letters, 28, (12), pp. 379-383
  • James S Vrentas and C. M. Vrentas, 1990, "Predictions of Volumetric Behavior for Glassy Polymer-Penetrant Systems", Journal of Polymer Science Part B: Polymer Physics, 28, (2), pp. 241-244
  • D. C. Venerus, C. M. Vrentas and James S Vrentas, 1990, "Step Strain Deformations for Viscoelastic Fluids: Experiment", Journal of Rheology, 34, (5), pp. 657-683
  • James S Vrentas and C. M. Vrentas, 1989, "Boundary Conditions for Chemically Reactive Surfaces", Chemical Engineering Science, 44, (12), pp. 3001-3003
  • James S Vrentas and C.-H. Chu, 1989, "Free-Volume Analysis of Solvent Self-Diffusion in Polymer Solutions", Journal of Colloid and Interface Science, 130, (1), pp. 293-295
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1989, "Free-Volume Equations for Polymer-Penetrant Diffusion", Journal of Membrane Science, 40, (1), pp. 101-107
  • James S Vrentas and C.-H. Chu, 1989, "Molecular Weight Dependence of the Diffusion Coefficient for the Polystyrene-Toluene System", Journal of Polymer Science Part B: Polymer Physics, 27, (2), pp. 465-468
  • James S Vrentas, C.-H. Chu, M. C. Drake and E. von Meerwall, 1989, "Predictive Capabilities of a Free-Volume Theory for Solvent Self-Diffusion Coefficients", Journal of Polymer Science Part B: Polymer Physics, 27, (5), pp. 1179-1184
  • James S Vrentas and C. M. Vrentas, 1989, "Volumetric Behavior of Glassy Polymer-Penetrant Systems", Macromolecules, 22, (5), pp. 2264-2266
  • James S Vrentas and C. M. Vrentas, 1988, "A Green's Function Method for the Solution of Diffusion-Reaction Problems", AIChE Journal, 34, (2), pp. 347-348
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1988, "Antiplasticization and Volumetric Behavior in Glassy Polymers", Macromolecules, 21, (5), pp. 1470-1475
  • James S Vrentas and C. M. Vrentas, 1988, "Convective Effects in CVD Reactors", Journal of the Electrochemical Society, 135, (8), pp. 2108-2108
  • James S Vrentas and C. M. Vrentas, 1988, "Dispersion in Laminar Tube Flow at Low Peclet Numbers or Short Times", AIChE Journal, 34, (9), pp. 1423-1430
  • James S Vrentas and C. M. Vrentas, 1988, "Evaluation of One-Dimensional Solutions for CVD Reactors", Journal of the Electrochemical Society, 135, (12), pp. 3167-3169
  • James S Vrentas and A.-C. Hou, 1988, "History Dependence of Diffusion Coefficients for Glassy Polymer-Penetrant Systems", Journal of Applied Polymer Science, 36, (8), pp. 1933-1934
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1988, "Influence of the Glass Transition on Solvent Self-Diffusion in Amorphous Polymers", Journal of Polymer Science Part B: Polymer Physics, 26, (5), pp. 1059-1065
  • James S Vrentas and C. M. Vrentas, 1988, "Transport Effects in Low-Pressure Chemical Vapor Deposition Reactors", Chemical Engineering Science, 43, (7), pp. 1437-1445
  • James S Vrentas and W.-T. Wu, 1987, "Buoyancy Correction for Oscillatory Sorption Experiments", Journal of Membrane Science, 31, (2-3), pp. 337-342
  • James S Vrentas and C.-H. Chu, 1987, "Concentration Dependence of Solvent Self-Diffusion Coefficients", Journal of Applied Polymer Science, 34, (2), pp. 587-592
  • James S Vrentas, J. L. Duda and A.-C. Hou, 1987, "Determination of Free-Volume Parameters from Diffusivity Data in Glassy Polymers", Journal of Applied Polymer Science, 33, (7), pp. 2581-2586
  • James S Vrentas and C.-H. Chu, 1987, "Effect of Variable Diffusivity on Tubular Polymerization Reactor Performance", Chemical Engineering Science, 42, (5), pp. 1256-1258
  • James S Vrentas and C. M. Vrentas, 1987, "Unsteady Diffusion with a First-Order Homogeneous Reaction", AIChE Journal, 33, (1), pp. 167-168
  • James S Vrentas, J. L. Duda and C.-H. Chu, 1986, "Bifurcation and Discretization Errors in the Solution of Non-Newtonian Flow Problems", Journal of Non-Newtonian Fluid Mechanics, 21, (3), pp. 377-383
  • James S Vrentas and W. J. Huang, 1986, "Radial Transport in Tubular Polymerization Reactors", Chemical Engineering Science, 41, (8), pp. 2041-2051
  • James S Vrentas, J. L. Duda and W. J. Huang, 1986, "Regions of Fickian Diffusion in Polymer-Solvent Systems", Macromolecules, 19, (6), pp. 1718-1724
  • James S Vrentas, J. L. Duda and A.-C. Hou, 1986, "Segmentwise Diffusion in Molten Polystyrene", Journal of Applied Polymer Science, 31, (2), pp. 739-745
  • James S Vrentas, C. M. Vrentas and H.-C. Ling, 1985, "Boundary Conditions at Inflow and Outflow Planes", Journal of Non-Newtonian Fluid Mechanics, 19, (1), pp. 1-13
  • James S Vrentas, C. M. Vrentas and A. F. Shirazi, 1985, "Downstream Boundary Conditions For Vertical Jets", AIChE Journal, 31, (6), pp. 1044-1046
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1985, "Enhancement of Impurity Removal from Polymer Films", Journal of Applied Polymer Science, 30, (12), pp. 4499-4516
  • James S Vrentas, J. L. Duda and A.-C. Hou, 1985, "Evaluation of Theories for Diffusion in Polymer-Solvent Systems", Journal of Polymer Science: Polymer Physics Edition, 23, (12), pp. 2469-2475
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1985, "Free-Volume Theories for Self-Diffusion in Polymer-Solvent Systems. I. Conceptual Differences in Theories", Journal of Polymer Science: Polymer Physics Edition, 23, (2), pp. 275-288
  • James S Vrentas, J. L. Duda, H.-C. Ling and A.-C. Hou, 1985, "Free-Volume Theories for Self-Diffusion in Polymer-Solvent Systems. II. Predictive Capabilities", Journal of Polymer Science: Polymer Physics Edition, 23, (2), pp. 289-304
  • James S Vrentas, J. L. Duda and A.-C. Hou, 1984, "Anomalous Sorption in Poly(ethyl Methacrylate)", Journal of Applied Polymer Science, 29, (1), pp. 399-406
  • James S Vrentas, C. M. Vrentas, A. H. Bhombal and M. S. Lahalih, 1984, "Orientation in Amorphous Polymers. I. Preparation and Testing of Oriented Samples", Polymer Engineering and Science, 24, (12), pp. 956-964
  • James S Vrentas, C. M. Vrentas and A. H. Bhombal, 1984, "Orientation in Amorphous Polymers. II. Characterization of Orientation", Polymer Engineering and Science, 24, (12), pp. 965-973
  • James S Vrentas, J. L. Duda, S. T. Ju and L.-W. Ni, 1984, "Oscillatory Diffusion Experiments for Solvent Diffusion in Polymer Films", Journal of Membrane Science, 18, (MAR), pp. 161-175
  • James S Vrentas, J. L. Duda and H.-C. Ling, 1984, "Self-Diffusion in Polymer-Solvent-Solvent Systems", Journal of Polymer Science: Polymer Physics Edition, 22, (3), pp. 459-469
  • James S Vrentas and C. M. Vrentas, 1983, "Boundary Conditions for Periodic Flow Fields", Chemical Engineering Communications, 22, (1-2), pp. 53-62
  • James S Vrentas, J. L. Duda and L.-W. Ni, 1983, "Concentration Dependence of Polymer Self-Diffusion Coefficients", Macromolecules, 16, (2), pp. 261-266
  • James S Vrentas, C. M. Vrentas and R. Narayanan, 1983, "Domain Dependence of Critical Rayleigh Numbers", International Journal of Heat and Mass Transfer, 26, (9), pp. 1299-1305
  • James S Vrentas, C. M. Vrentas and H.-C. Ling, 1983, "Equations for Predicting Growth or Dissolution Rates of Spherical Particles", Chemical Engineering Science, 38, (11), pp. 1927-1934
  • James S Vrentas and C. M. Vrentas, 1983, "Mechanical Energy Balances for a Capillary Viscometer", Journal of Non-Newtonian Fluid Mechanics, 12, (2), pp. 211-224
  • James S Vrentas, J. L. Duda and S. T. Hsieh, 1983, "Thermodynamic Properties of Some Amorphous Polymer-Solvent Systems", Industrial & Engineering Chemistry Product Research and Development, 22, (2), pp. 326-330
  • James S Vrentas, J. L. Duda and S. A. Hong, 1982, "Excess Pressure Drops in Entrance Flows", Journal of Rheology, 26, (4), pp. 347-357
  • James S Vrentas and C. M. Vrentas, 1982, "Existence of Solutions to Spherical Moving Boundary Problems", Journal of Chemical Physics, 77, (10), pp. 5256-5257
  • James S Vrentas and C. M. Vrentas, 1982, "Inertia and Surface Tension Effects in Newtonian Liquid Jets", International Journal of Multiphase Flow, 8, (5), pp. 559-564
  • James S Vrentas, C. M. Vrentas, R. Narayanan and S. S. Agrawal, 1982, "Integral Equation Formulation for Buoyancy Driven Convection Problems", Applied Scientific Research, 39, (4), pp. 277-299
  • J. L. Duda, James S Vrentas, S. T. Ju and H. T. Liu, 1982, "Prediction of Diffusion Coefficients for Polymer-Solvent Systems", AIChE Journal, 28, (2), pp. 279-287
  • James S Vrentas, J. L. Duda and M. K. Lau, 1982, "Solvent Diffusion in Molten Polyethylene", Journal of Applied Polymer Science, 27, (10), pp. 3987-3997
  • James S Vrentas, C. M. Vrentas, R. Narayanan and S. S. Agrawal, 1982, "Supercritical Cell Size for Buoyancy-Driven Convection", Chemical Engineering Journal, 25, (1), pp. 101-105
  • James S Vrentas, C. M. Vrentas, R. Narayanan and S. S. Agrawal, 1982, "Surface Tension-Driven Convection in a Cylindrical Geometry", Chemical Engineering Communications, 14, (3-6), pp. 203-223
  • James S Vrentas, R. Narayanan and S. S. Agrawal, 1981, "Free Surface Convection in a Bounded Cylindrical Geometry", International Journal of Heat and Mass Transfer, 24, (9), pp. 1513-1529
  • S. T. Ju, J. L. Duda and James S Vrentas, 1981, "Influence of Temperature on the Diffusion of Solvents in Polymers Above the Glass Transition Temperature", Industrial & Engineering Chemistry Product Research and Development, 20, (2), pp. 330-335
  • James S Vrentas, H. T. Liu and J. L. Duda, 1981, "Mass Transfer During Drop Formation", Chemical Engineering Journal, 21, (2), pp. 155-163
  • S. T. Ju, H. T. Liu, J. L. Duda and James S Vrentas, 1981, "Solvent Diffusion in Amorphous Polymers", Journal of Applied Polymer Science, 26, (11), pp. 3735-3744
  • F. H. L. Wang, J. L. Duda and James S Vrentas, 1980, "Analysis of Impurity Migration in Plastic Containers", Polymer Engineering and Science, 20, (2), pp. 120-127
  • James S Vrentas, H. T. Liu and J. L. Duda, 1980, "Comparison of Theory and Experiment For Diffusion in Dilute Polymer Solutions", Journal of Polymer Science: Polymer Physics Edition, 18, (7), pp. 1633-1641
  • James S Vrentas, H. T. Liu and J. L. Duda, 1980, "Effect of Solvent Size on Diffusion in Polymer-Solvent Systems", Journal of Applied Polymer Science, 25, (8), pp. 1793-1797
  • James S Vrentas, H. T. Liu and J. L. Duda, 1980, "Estimation of Diffusion Coefficients for Trace Amounts of Solvents in Glassy and Molten Polymers", Journal of Applied Polymer Science, 25, (7), pp. 1297-1310
  • H. T. Liu, J. L. Duda and James S Vrentas, 1980, "Influence of Solvent Size on the Concentration Dependence of Polymer-Solvent Diffusion Coefficients", Macromolecules, 13, (6), pp. 1587-1589
  • James S Vrentas and D. Shin, 1980, "Perturbation Solutions of Spherical Moving Boundary Problems. I. Slow Growth or Dissolution Rates", Chemical Engineering Science, 35, (8), pp. 1687-1696
  • James S Vrentas and D. Shin, 1980, "Perturbation Solutions of Spherical Moving Boundary Problems. II. Rapid Growth or Dissolution Rates", Chemical Engineering Science, 35, (8), pp. 1697-1705
  • James S Vrentas and J. L. Duda, 1979, "Diffusion of Large Penetrant Molecules in Amorphous Polymers", Journal of Polymer Science: Polymer Physics Edition, 17, (6), pp. 1085-1096
  • J. L. Duda, Y. C. Ni and James S Vrentas, 1979, "An Equation Relating Self-Diffusion and Mutual Diffusion Coefficients in Polymer-Solvent Systems", Macromolecules, 12, (3), pp. 459-462
  • James S Vrentas and J. L. Duda, 1979, "Molecular Diffusion in Polymer Solutions", AIChE Journal, 25, (1), pp. 1-24
  • J. L. Duda, Y. C. Ni and James S Vrentas, 1979, "Toluene Diffusion in Molten Polystyrene", Journal of Applied Polymer Science, 23, (3), pp. 947-951
  • James S Vrentas, J. L. Duda and G. D. Lehmkuhl, 1978, "Characteristics of Radial Transport in Solid-Liquid Slug Flow", Industrial & Engineering Chemistry Fundamentals, 17, (1), pp. 39-45
  • J. L. Duda, Y. C. Ni and James S Vrentas, 1978, "Diffusion of Ethylbenzene in Molten Polystyrene", Journal of Applied Polymer Science, 22, (3), pp. 689-699
  • James S Vrentas and J. L. Duda, 1978, "A Free-Volume Interpretation of the Influence of the Glass Transition on Diffusion in Amorphous Polymers", Journal of Applied Polymer Science, 22, (8), pp. 2325-2339
  • James S Vrentas, J. L. Duda and Y. C. Ni, 1977, "Analysis of Step-Change Sorption Experiments", Journal of Polymer Science: Polymer Physics Edition, 15, (11), pp. 2039-2045
  • James S Vrentas and J. L. Duda, 1977, "Diffusion in Polymer-Solvent Systems. I. Reexamination of the Free Volume Theory", Journal of Polymer Science: Polymer Physics Edition, 15, (3), pp. 403-416
  • James S Vrentas and J. L. Duda, 1977, "Diffusion in Polymer-Solvent Systems. II. A Predictive Theory for the Dependence of Diffusion Coefficients on Temperature, Concentration, and Molecular Weight", Journal of Polymer Science: Polymer Physics Edition, 15, (3), pp. 417-439
  • James S Vrentas and J. L. Duda, 1977, "Diffusion in Polymer-Solvent Systems. III. Construction of Deborah Number Diagrams", Journal of Polymer Science: Polymer Physics Edition, 15, (3), pp. 441-453
  • James S Vrentas and J. L. Duda, 1977, "Solvent and Temperature Effects on Diffusion on Polymer-Solvent Systems", Journal of Applied Polymer Science, 21, (6), pp. 1715-1728
  • James S Vrentas and J. L. Duda, 1976, "Diffusion in Dilute Polystyrene Solutions", Journal of Polymer Science: Polymer Physics Edition, 14, (1), pp. 101-109
  • James S Vrentas and J. L. Duda, 1976, "Diffusion in Infintely Dilute Polystyrene Solutions", Journal of Applied Polymer Science, 20, (4), pp. 1125-1131
  • James S Vrentas and J. L. Duda, 1976, "Diffusion of Small Molecules in Amorphous Polymers", Macromolecules, 9, (5), pp. 785-790
  • S. Min, J. L. Duda, R. H. Notter and James S Vrentas, 1976, "An Interferometric Technique for the Study of Steady State Membrane Transport", AIChE Journal, 22, (1), pp. 175-182
  • James S Vrentas and J. L. Duda, 1976, "On Relationships Between Diffusion and Friction Coefficients", Journal of Applied Polymer Science, 20, (9), pp. 2569-2574
  • J. L. Duda, M. F. Malone, R. H. Notter and James S Vrentas, 1975, "Analysis of Two-Dimensional Diffusion-Controlled Moving Boundary Problems", International Journal of Heat and Mass Transfer, 18, (7-8), pp. 901-910
  • James S Vrentas, C. M. Jarzebski and J. L. Duda, 1975, "A Deborah Number for Diffusion in Polymer-Solvent Systems", AIChE Journal, 21, (5), pp. 894-901
  • J. L. Duda and James S Vrentas, 1973, "Entrance Flows of Non-Newtonian Fluids", Transactions of the Society of Rheology, 17, (1), pp. 89-108
  • James S Vrentas and J. L. Duda, 1973, "Flow of a Newtonian Fluid Through a Sudden Contraction", Applied Scientific Research, 28, (4-5), pp. 241-260
  • J. L. Duda, G. K. Kimmerly, W. L. Sigelko and James S Vrentas, 1973, "Sorption Apparatus for Diffusion Studies with Molten Polymers", Industrial & Engineering Chemistry Fundamentals, 12, (1), pp. 133-136
  • J. L. Duda and James S Vrentas, 1972, "Inviscid Flow Through a Sudden Contraction", Industrial & Engineering Chemistry Fundamentals, 11, (4), pp. 590-593
  • J. L. Duda and James S Vrentas, 1972, "Pressure Losses in Non-Newtonian Entrance Flows", Canadian Journal of Chemical Engineering, 50, (5), pp. 671-674
  • J. L. Duda and James S Vrentas, 1971, "Heat or Mass Transfer-Controlled Dissolution of an Isolated Sphere", International Journal of Heat and Mass Transfer, 14, (3), pp. 395-407
  • J. L. Duda and James S Vrentas, 1971, "Heat Transfer in a Cylindrical Cavity", Journal of Fluid Mechanics, 45, (2), pp. 261-279
  • J. L. Duda and James S Vrentas, 1971, "Mathematical Analysis of Sorption Experiments", AIChE Journal, 17, (2), pp. 464-469
  • J. L. Duda and James S Vrentas, 1971, "Steady Flow in the Region of Closed Streamlines in a Cylindrical Cavity", Journal of Fluid Mechanics, 45, (2), pp. 247-260
  • J. L. Duda, W. L. Sigelko and James S Vrentas, 1969, "Binary Diffusion Studies with a Wedge Interferometer", Journal of Physical Chemistry, 73, (1), pp. 141-149
  • J. L. Duda and James S Vrentas, 1969, "Mathematical Analysis of Bubble Dissolution", AIChE Journal, 15, (3), pp. 351-356
  • J. L. Duda and James S Vrentas, 1969, "Perturbation Solutions of Diffusion-Controlled Moving Boundary Problems", Chemical Engineering Science, 24, (3), pp. 461-470
  • J. L. Duda and James S Vrentas, 1968, "Diffusion in Atactic Polystyrene Above the Glass Transition Point", Journal of Polymer Science Part A-2: Polymer Physics, 6, (4PA2), pp. 675-685
  • J. L. Duda and James S Vrentas, 1968, "Laminar Liquid Jet Diffusion Studies", AIChE Journal, 14, (2), pp. 286-294
  • J. L. Duda and James S Vrentas, 1968, "Mathematical Analysis of Dropping Mercury Electrode. II. Prediction of Time Dependence of Mercury Flow Rate", Journal of Physical Chemistry, 72, (4), pp. 1193-1200
  • J. L. Duda and James S Vrentas, 1968, "Mathematical Analysis of Dropping Mercury Electrode. I. Solution of Diffusion Equation for Variable Mercury Flow Rate", Journal of Physical Chemistry, 72, (4), pp. 1187-1192
  • J. L. Duda and James S Vrentas, 1967, "Diffusion with Time-Dependent Interfacial Resistance", Chemical Engineering Science, 22, (1), pp. 27-33
  • James S Vrentas and J. L. Duda, 1967, "Effect of Axial Diffusion of Vorticity on Flow Development in Circular Conduits: Part II. Analytical Solution for Low Reynolds Numbers", AIChE Journal, 13, (1), pp. 97-101
  • J. L. Duda and James S Vrentas, 1967, "Fluid Mechanics of Laminar Liquid Jets", Chemical Engineering Science, 22, (6), pp. 855-869
  • J. L. Duda and James S Vrentas, 1966, "Establishment of Position of Initial Interface in Free Diffusion Experiments", Industrial & Engineering Chemistry Fundamentals, 5, (3), pp. 434-435
  • J. L. Duda and James S Vrentas, 1966, "Numerical Technique for Solution of the Diffusion Equation in an Infinite Medium", Industrial & Engineering Chemistry Fundamentals, 5, (1), pp. 69-74
  • James S Vrentas, J. L. Duda and K. G. Bargeron, 1966, "Effect of Axial Diffusion of Vorticity on Flow Development in Circular Conduits: Part I. Numerical Solutions", AIChE Journal, 12, (5), pp. 837-844
  • J. L. Duda and James S Vrentas, 1965, "Analysis of Free Diffusion Experiments in Binary Systems", Industrial & Engineering Chemistry Fundamentals, 4, (3), pp. 301-308
  • J. L. Duda and James S Vrentas, 1965, "Mathematical Analysis of Multicomponent Free-Diffusion Experiments", Journal of Physical Chemistry, 69, (10), pp. 3305-3313
  • J. L. Duda and James S Vrentas, 1964, "Macroscopic Approach to Irreversible Thermodynamics", Industrial & Engineering Chemistry Fundamentals, 3, (3), pp. 272-274

Encyclopedia Entries

  • James S Vrentas and J. L. Duda, 1986, "Diffusion",, Encyclopedia of Polymer Science and Engineering, 2nd ed., 5, 36 - 68, John Wiley & Sons, Inc., NY
  • J. L. Duda and James S Vrentas, 1970, "Styrene Polymers (Physical Properties - Diffusion)",, Encyclopedia of Polymer Science and Technology, 13, 326 - 342, John Wiley and Sons, Inc., NY

Research Projects

Honors and Awards

  • Premier Research Award, Penn State College of Engineering, 1991 - 1991
  • Charles M. A. Stine Materials Engineering and Science Award, American Institute of Chemical Engineers, 1989 - 1989
  • Teaching Award, Penn State College of Engineering, 1985 - 1985
  • Outstanding Professor, Chemical Engineering Graduate Students, 1985 - 1985
  • Research Award, Penn State College of Engineering, 1984 - 1984
  • Outstanding Professor, Chemical Engineering Graduate Students, 1984 - 1984
  • Outstanding Professor, Chemical Engineering Graduate Students, 1983 - 1983
  • William H. Walker Award, American Institute of Chemical Engineers, 1981 - 1981
  • NSF Graduate Research Fellowship, NSF, 1958 - 1958
  • Dow Professor of Chemical Engineering, Penn State, 1985

Service

Service to Penn State:

  • Member, Early Career Alumni Recognition Award Committee, June 2014 - July 2014
  • Alternate memberTenure and Promotion Committee, July 2013 - 2014
  • Member, Tenure and Promotion Committee, January 2003 - June 2013
  • Member, Undergraduate Curriculum Committee, September 2005 - December 2011
  • Coordinator and Host of Visit and SeminarJune 2010 - June 2010
  • Mentor, AIChE student chapter ChE car competition, September 2007 - May 2009
  • Chairperson, Tenure and Promotion Committee, September 2007 - August 2009
  • Member, Premier Research Award Committee, February 2008 - February 2008
  • Chairperson, Candidacy Exam Committee, January 2006 - May 2006
  • AlternateSabatical Leave Committee, September 2003 - December 2003
  • Member, Early Career Alumni Recognition Award Committee, September 2015
  • Member, Undergraduate Scholarship Committee, March 2015

Service to External Organizations:

  • RefereeDrexel University, ChE Dept., September 2012 - October 2012
 


 

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The Penn State Department of Chemical Engineering, established in 1948, is recognized as one of the largest and most influential chemical engineering departments in the nation.

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Department of Chemical Engineering

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