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Greenfield Research Group

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    Asphalts


  • Liqun Zhang and Michael L. Greenfield, Effects of Polymer Modification on Properties and Microstructure of Model Asphalt Systems, in press at Energy Fuels, (2008). See abstract, pdf (requires subscription), supporting information.

  • Liqun Zhang and Michael L. Greenfield, Relaxation Time, Diffusion, and Viscosity Analysis of Model Asphalt Systems Using Molecular Simulation, J. Chem. Phys., 127:194502 (2007). See abstract or pdf (requires subscription).

  • Liqun Zhang and Michael L. Greenfield, Analyzing Properties of Model Asphalts using Molecular Simulation, Energy Fuels, 21:1712-1716 (2007). See abstract or pdf (requires subscription).

  • Liqun Zhang and Michael L. Greenfield, Molecular Orientation in Model Asphalts using Molecular Simulation, Energy Fuels, 21:1102-1111 (2007). See abstract or pdf (requires subscription).

    • Diffusion in Polymers


  • C.A. Peters, K.R. Ellwood, Y. Srivastava, M.E. Nichols, Michael L. Greenfield, Ultraviolet light absorber mobility in crosslinked coatings: Experiments and modeling, Prog. Org. Coat., 58:272-281 (2007).

  • Michael L. Greenfield, Simulation of Small Molecule Diffusion using Continuous Space Disordered Networks, Mol. Phys., 102:421-430 (2004).

  • Michael L. Greenfield, "Sorption and Diffusion of Small Molecules using Transition State Theory," in Simulation Methods for Modeling Polymers, Michael J. Kotelyanskii and Doros N. Theodorou, editors; New York: Marcel Dekker, 425-490 (2004).

  • Michael L. Greenfield and Doros N. Theodorou, Coarse-grained molecular simulation of penetrant diffusion in a glassy polymer using reverse and kinetic Monte Carlo, Macromolecules, 34:8541-8553 (2001).

  • Michael L. Greenfield and Doros N. Theodorou, Molecular modeling of methane diffusion in glassy atactic polypropylene via multidimensional transition-state theory, Macromolecules, 31:7068-7090 (1998).

  • Michael L. Greenfield and Doros N. Theodorou, Coupling of penetrant and polymer motions during small-molecule diffusion in a glassy polymer, Mol. Simul., 19:329-361 (1997).

  • Angus A. Gray-Weale, Richard H. Henchman, Robert G. Gilbert, Michael L. Greenfield, and Doros N. Theodorou, Transition-state theory model for the diffusion coefficients of small penetrants in glassy polymers, Macromolecules, 30:7296-7306 (1997).

  • Michael L. Greenfield and Doros N. Theodorou, Geometric analysis of diffusion pathways in glassy and melt atactic polypropylene, Macromolecules, 26:5461-5472 (1993).

    • Molecular Tribology


  • Michael L. Greenfield and Hiroko Ohtani, Friction and Normal Forces due to Friction Modifier Additives in Simulations of Boundary Lubrication, submitted to Tribo. Lett. (2006).

  • Michael L. Greenfield and Hiroko Ohtani, Packing of Simulated Friction Modifier Additives under Confinement, Langmuir, 21:7568-7578 (2005). See abstract or pdf (requires subscription).

  • Yingxi Zhu, Hiroko Ohtani, Marina Ruths, Michael L. Greenfield, and Steve Granick, Modification of Boundary Lubrication by Oil-Soluble Friction Modifier Additives, Tribo. Lett., 15:127-134 (2003).

  • Hiroko Ohtani, Yingxi Zhu, Michael L. Greenfield, Marina Ruths, and Steve Granick, Nanorheological study of automotive lubricants, Proc. of the 2000 International Tribology Conference, Nagasaki (2000).

  • Michael L. Greenfield and Hiroko Ohtani, Structure and sliding friction of adsorbed friction modifier additives, Proceedings of the FOMMS Conference, paper A26 (2000).

  • Michael L. Greenfield and Hiroko Ohtani, Molecular dynamics simulation study of model friction modifier aditives between two surfaces, Tribo. Lett., 7:137-145 (1999).

  • Marina Ruths, Hiroko Ohtani, Michael L. Greenfield, and Steve Granick, Exploring the "friction modifier" phenomenon: Nanorheology of alkane chains with polar terminus dissolved in n-alkane solvent, Tribo. Lett., 6:207-214 (1999).

    • Alternative Air Conditioning


  • Michael L. Greenfield, John J. Meyer, George Mozurkewich, William F. Schneider, Leonard I. Stiel, Cofluids for Use with Carbon Dioxide Refrigerant, US Patent No. 6,415,614 B1, issued July 9, 2002. patent itself at PTO

  • George Mozurkewich, Michael L. Greenfield, William F. Schneider, David C. Zietlow, and John J. Meyer, Simulated performance and cofluid dependence of a CO2-cofluid refrigeration cycle with wet compression, Int. J. Refrig., 25:1123-1136 (2002).

  • George Mozurkewich, Russ Roberts, Michael L. Greenfield, William F. Schneider, and John J. Meyer, Cycle model assessment of working fluids for a low pressure CO2 refrigeration system, SAE paper 2000-01-0578, (2000).

  • Michael L. Greenfield, George Mozurkewich, William F. Schneider, Gary D. Bramos, and David C. Zietlow, Thermodynamic and cycle models for a low-pressure CO2 refrigeration cycle, SAE paper 1999-01-0869, (1999).

    • Fuels


  • Michael L. Greenfield, Development of Model Fuels with Volatilities that Resemble those of Real Fuels, ACS Fuel Chemistry Division Preprints, 47(1):209-210 (2002).

  • Michael L. Greenfield and Giuseppe Rossi, Vapor and liquid composition differences resulting from fuel evaporation, SAE paper 1999-01-0377, (1999).

  • Michael L. Greenfield, George A. Lavoie, Carol S. Smith, and Eric W. Curtis, Macroscopic model of the D86 fuel volatility procedure, SAE paper 982724, (1998).

    • Hydrogen Bonding in Liquids


  • John T. Reilly, John M. Walsh, Michael L. Greenfield, and Marc D. Donohue, Analysis of FTIR spectroscopic data -- the Voigt profile, Spectrochim. Acta A -- Molec. Spectr., 48:1459-1479 (1992).

  • John M. Walsh, Michael L. Greenfield, George D. Ikonomou, and Marc D. Donohue, An FTIR spectroscopic study of hydrogen bonding in entrainer cosolvent mixtures, Intl. J. of Thermophys., 11:119-132 (1990).

  • John M. Walsh, Michael L. Greenfield, George D. Ikonomou, and Marc D. Donohue, Hydrogen bonding competition in entrainer cosolvent mixtures, Chem. Eng. Comm., 86:125-144 (1989).

    • Miscellaneous


  • Michael L. Greenfield, Ronald P. Cooper, and Mark S. Ciechanowski, Industry-community educational interaction through the Ford High School Science and Technology Program, Proc. of the Educational Topical Conference of the AIChE Annual Meeting (2000).

  • William F. Schneider, Kenneth C. Hass, Michael L. Greenfield, Chris Wolverton, Alex Bogicevic, David J. Mann, and Ellen B. Stechel, Chemical and materials simulation at Ford Motor Company, Proceedings of the FOMMS Conference, paper I04 (2000).

    • Preprints


  • Liqun Zhang and Michael L. Greenfield, Polystyrene Single Chain Relaxation in a Model Asphalt Mixture, Polymeric Materials Sci. and Eng. (Am. Chem. Soc.), 97:888-889 (2007).

  • Michael L. Greenfield and Doros N. Theodorou, Structure, rate, and mechanism of methane diffusion in glassy atactic polypropylene as determined by coarse-grained molecular modeling, Polymeric Materials Sci. and Eng. (Am. Chem. Soc.), 76:429-430 (1997).

  • Michael L. Greenfield and Doros N. Theodorou, Distribution of jump rate constants underlying methane diffusion in glassy atactic polypropylene as calculated with transition-state theory, Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 36:687-688 (1995).

  • Michael L. Greenfield and Doros N. Theodorou, Description of small penetrant jump motions in a polymer glass using transition-state theory, Polymeric Materials Science and Engineering (Am. Chem. Soc.), 71:407-408 (1994).

  • Michael L. Greenfield and Doros N. Theodorou, Geometric analysis of diffusion paths in glassy polymers, Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 33:689-690 (1992).
    • University of Rhode Island

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