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» Herve
Marand
Professor, Polymer Physical Chemistry
 hmarand@vt.edu
office: 301-E Davidson Hall
phone: 540-231-8227
lab phone: 540-231-3298
fax: 540-231-3255
group web pages: www.chem.vt.edu/chem-dept/marand/HMG.html
Education
B.S. 1982 Ecole Nationale Superieure de Chimie de Paris, France
Ph.D. 1988 University of Massachusetts, Amherst
Postdoctoral Associate 1987-1988 Michigan Molecular Institute
NSF Young Investigator Award, 1993
Research Interests
Semicrystalline polymers such as polyethylene, polypropylene, poly(ethylene
terephthalate) and nylon-6,6, to name a few, have become an integral part
of our environment during the last half a century. Yet, we are still far
from having a complete molecular level understanding of their crystallization
mechanism and intrinsic structure-property correlations. Using a combination
of differential scanning calorimetry, dilatometry, optical, electron and
atomic force microscopies, light and X-ray scattering, infrared spectroscopy
and rheological measurements, we probe their crystallization and melting
behavior as well as their morphology and physical properties. Examples
of current research projects are given below:
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Experimental and theoretical studies of the molar mass and temperature
dependences of crystal growth for flexible chain polymers.
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Investigations of the crystallization, morphology and physical properties
of ethylene/styrene and ethylene/styrene/propylene statistical copolymers.
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Crystallization and morphological studies in propylene based copolymers
and blends.
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Studies of the correlations between secondary crystallization and physical
aging above Tg.
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Competition between crystallization and phase separation in binary polymer
mixtures.
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Crystallization of polymers in confined space.
Selected Publications
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"Influence
of Structural and Topological Constraints on the Crystallization and Melting
Behavior of Polymers. 3. Bisphenol A-Polycarbonate", A. Alizadeh, S.
Sohn, J. Quinn, H. Marand, L.C. Schank, H.D. Iler, Macromolecules
34,
4066-4078 (2001)
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"Influence
of Structural and Topological Constraints on the Crystallization and Melting
Behavior of Polymers. 2. Poly(arylene ether ether ketone)", H. Marand,
A. Alizadeh, R. Farmer, R. Desai, V. Velikov, Macromolecules 33,
3392-3403 (2000).
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"Influence
of Structural and Topological Constraints on the Crystallization and Melting
Behavior of Polymers. 1. Ethylene/1-Octene Copolymers", A. Alizadeh,
L. Richardson, J. Xu, S. McCartney, H. Marand, Y.W. Cheung and S. Chum,
Macromolecules
32,
6221-6235 (1999).
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"Determination
of the Equilibrium Melting Temperature of Polymer Crystals: Linear and
Nonlinear Hoffman-Weeks Extrapolations", H. Marand, J. Xu, and S. Srinivas,
Macromolecules
31, 8219-8229 (1998).
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"Equilibrium
Melting Temperature and Undercooling Dependence of the Spherulitic Growth
Rate of Isotactic Polypropylene", J. Xu, S. Srinivas, H. Marand, P.
Agarwal, Macromolecules 31, 8230-8242 (1998).
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