Resume:
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BS and MS Physics - Northern Illinois University, 1963, 1965
Solid state physics: crystal symmetry
Mossbauer effect
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Ph.D. Physics - Northwestern University, 1969
Solid state physics: metals, hydrides, alloys
NMR and magnetic susceptibility
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Research Associate, Metallurgy - University of Illinois at Urbana
NMR in transition metal oxides and nitrides
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The University of Akron - faculty and administrative positions, 1971 to present
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Fellow, American Physical Society, 1994
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Research:
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Nuclear magnetic resonance (NMR): spectroscopy and relaxation.
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Diffusion via NMR: molecular motions in polymeric systems; fluid flow;
NMR imaging.
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Structure-property relations in polymer systems.
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Numerical methods for data analysis and simulation.
Our research is mainly concerned with the study of molecular motions of
large (polymer) molecules in the viscous liquid phase, in solutions, and
in rubbery materials including composites, i.e., materials containing small
rigid particles. We measure local molecular (segmental) mobility using
NMR relaxation, and study Brownian motions (diffusion) of unattached macromolecules
and solvent molecules in such systems using the pulsed-gradient spin-echo
NMR method. We also perform polymer fluid flow characterization with simple
NMR imaging techniques. The goal is to relate microscopic mobility in amorphous
materials to their macroscopic mechanical properties, in an effort to predict
and improve these properties. In support of this effort we perform computer
data analysis, model calculations, and simulations. Undergraduate and graduate
students participate in this work, and we collaborate with other researchers
in several UA Departments and nationally.
NMR
Group Page
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Recent Publications:
2000
2002
2003
2004
2005
2006
2007
2000
"Isothermal Thickening and Thinning Processes in Low Molecular Weight
Poly(ethylene oxide) Fractions Crystallized from the Melt. 7. Effects
of Molecular Configurational Defects on Crystallization, Melting, and
Annealing", E.-Q. Chen, S.-W. Lee, A. Zhang, B.-S. Moon, I. Mann,
F. W. Harris, S. Z. D. Cheng, B. S. Hsiao, F. Yeh, and E. von
Meerwall, invited contribution in "Scattering From Polymers", ACS
Symposium Series # 739, 118-139 (2000).
"Translational Diffusion in Monte-Carlo Simulations of Polymer
Melts: Center-of-Mass Displacement vs. Integrated Velocity
Autocorrelation Function", R. Ozisik, P. Doruker, W. L. Mattice, and
E. von Meerwall, Comput. Theor. Polym. Sci. 10/5, 411-418
(2000) (by invitation, special issue devoted to diffusion).
"Diffusivity and Viscosity of Concentrated Hydrogenated
Polybutadiene Solutions", H. Tao, T. P. Lodge, and E. von Meerwall,
Macromolecules 33, 1747-1758 (2000).
"Effect of Vinyl Content on the Self-Diffusion of Polybutadiene
Melts", J. H. Jang, T. Haliloglu, E. D. von Meerwall, and
W. L. Mattice, Macromolecules 33, 4271-4277 (2000).
2002
"Comparison of the Diffusion Coefficients of Unentangled Linear and
Cyclic Alkanes", R. Ozisik, E. von Meerwall, and W. L. Mattice,
orig. Comput. & Theor. Polym. Sci. (special issue dedicated
to W. Mattice); Polymer 43, 629-635 (2002).
"NMR Relaxation and Pulsed Gradient NMR Diffusion Measurements of
Ultrasonically Devulcanized Polydimethylsiloxane", S. E. Shim,
J. C. Parr, E. von Meerwall, and A. I. Isayev, J. Phys. Chem. B
106/46, 12072-12078 (2002).
2003
"Diffusion of Sucrose and - Trehalose in Aqueous Solutions",
N. Ekdawi-Sever, J. J. de Pablo, E. Feick, and E. von Meerwall,
J. Phys. Chem. A 107, 936-943 (2003).
"Microporosity of Bicontinuous Polymer Composites, Characterized with
Restricted Diffusion", V. Challa, K. Kuta, S. Lopina, M. Cheung, and
E. von Meerwall, Langmuir 19, 4154-4161 (2003).
"Self-Diffusion of Linear and Cyclic Alkanes, Measured with
Pulsed-Gradient Spin-Echo Nuclear Magnetic Resonance", E. von
Meerwall, R. Ozisik, W. L. Mattice, and P. M. Pfister,
J. Chem. Phys. 118/8, 3867-3873 (2003).
"Molecular Mobility of Ultrasonically Devulcanized Silica-Filled
Poly(dimethyl siloxane)", S. E. Shim, A. I. Isayev, and E. von
Meerwall, J. Polym. Sci. B: Polym. Physics 41, 454-465 (2003).
"Understanding Diffusion in Entangled Polymer Blends", E. von
Meerwall, S.-F. Wang, and S.-Q. Wang, Polymer Prepr. 44/1, 287-288
(2003).
"Composition and Temperature Dependence of Terminal and Segmental
Dynamics in Polyisoprene/Poly(vinyl ethylene) Blends", J. C. Haley,
T. P. Lodge, Y. He, M. D. Ediger, E. von Meerwall, and J. Mijovic,
Macromolecules 36, 6142-6151 (2003).
2004
"Molecular Mobility in Ultrasonically Devulcanized Unfilled Butadiene
Rubber", J.-S. Oh, A. I. Isayev, and E. von Meerwall, Rubber Chem. &
Technol. 77/4, 745-758 (2004).
"Molecular Mobility and Structure of Ultrasonically Treated Unfilled
Butadiene Rubber", J.-S. Oh, A. I. Isayev, T. Wagler, P. L. Rinaldi,
and E. von Meerwall, J. Polym. Sci. B: Polym. Physics 42/10,
1875-1887 (2004).
"Diffusion and Rheology of Binary Polymer Mixtures", S.-F. Wang,
E. von Meerwall, S.-Q. Wang, A. Halasa, W.-L. Hsu, J. P. Zhou, and
R. P. Quirk, Macromolecules 37, 1641-1651 (2004).
"Self-Diffusion and Viscosity of Low Molecular Weight Polystyrene over
a Wide Temperature Range", O. Urakawa, S. F. Swallen, M. D. Ediger,
and E. von Meerwall, Macromolecules 37, 1558-1564 (2004).
"Effect of Ultrasound on Thermoset Polyurethane: NMR Relaxation and
Diffusion Measurements", S. Ghose, A. I. Isayev, and E. von
Meerwall, Polymer 45/11, 3709-3720 (2004).
"Molecular Mobility in Ultrasonically Treated Butyl Gum and
Devulcanized Butyl Rubber", W-L. Feng, A. I. Isayev, and E. von
Meerwall, Polymer 45/25, 8459-8467 (2004).
2005
"Some Mechanisms for Subtle Influences of Stereochemical Composition
and Stereochemical Sequence on the Physical Properties of
Macromolecules", W. L. Mattice, C. A. Helfer, S. S. Rane, E. D. von
Meerwall, and B. L. Farmer, invited Highlight Article,
J. Polym. Sci. B: Polym. Physics 43, 1271-1282 (2005).
"Miscible Polyisoprene/Polystyrene Blends: Distinct Segmental Dynamics
but Homogeneous Terminal Dynamics", Yiyong He, T. R. Lutz,
M. D. Ediger, M. Pitsikalis, N. Hadjichristidis, and E. D. von
Meerwall, Macromolecules 38/14, 6216-6226 (2005).
"NMR Relaxation and Pulsed-Gradient Diffusion Study of Polyethylene
Nanocomposites", R. Ozisik, J. Zheng, P. Dionne, C. Picu, and E. von
Meerwall, J. Chem. Phys. 123, 134901 (2005).
"Investigating Linear and Non-linear Viscoelastic Behavior Using Model
Silica-Particle-Filled Polybutadiene", Zhiyong Zhu, Th. Thompson,
S.-Q. Wang, E. D. von Meerwall, and A. Halasa, Macromolecules 38/21,
8816-8824 (2005).
2006
"Dynamics of Polyethylene Melts, Studied by Monte-Carlo Simulations on
the 2nnd Lattice", H. Lin, W. L. Mattice, and E. D. von Meerwall,
J. Polym. Sci. B, Polym. Phys. 44, 2556-2571 (2006), (invited
contribution to a special issue on novel methodologies).
2007
"Chain Dynamics of Bidisperse Polyethylene Melts: A Monte-Carlo Study
on a High Coordination Lattice", H. Lin, W. L. Mattice, and E. D. von
Meerwall, Macromolecules 40, 959-966 (2007).
"Trace Diffusion of Alkanes in Polyethylene: Spin-Echo Experiment and
Monte-Carlo Simulation", E. D. von Meerwall, H. Lin, and
W. L. Mattice, Macromolecules 40, 2002-2007 (2007).
"Enhanced Diffusion at Intermediate Stereochemical Composition in
Polypropylene by Dynamical Monte Carlo", N. Waheed, W. L. Mattice,
and E. von Meerwall, Macromolecules 40, 1504-1511 (2007).
"Ultrasound Devulcanization of Unfilled Natural Rubber Networks,
Studied via Component Molecular Mobility", J. L. Massey, J. C. Parr,
T. Wagler, E. von Meerwall, C-K. Hong, and A. I. Isayev, Polymer
International 56, 860-869 (2007).
"Diffusion in Polyethylene Blends: Constraint Release and Entanglement
Dilution", E. D. von Meerwall, N. Dirama, and W. L. Mattice,
Macromolecules 40, 3970-3976 (2007).
"Molecular Mobility of Unfilled and Carbon-black-filled Isoprene
Rubber: Proton NMR Transverse Relaxation and Diffusion", E. von
Meerwall, X.-M. Sun, T. R. Joshi, and A. I. Isayev, Rubber Chem. &
Technol. (in press: issue of Nov/Dec. 2007).
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