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:
- Experimental and theoretical studies of the molar mass and temperature dependences of crystal growth for flexible chain polymers.
- Investigations of the crystallization, morphology and physical properties of ethylene/styrene and ethylene/styrene/propylene statistical copolymers.
- Crystallization and morphological studies in propylene based copolymers and blends.
- Studies of the correlations between secondary crystallization and physical aging above Tg.
- Competition between crystallization and phase separation in binary polymer mixtures.
- Crystallization of polymers in confined space.
- Dendritic Crystallization in Thin Films of PEO/PMMA Blends: A Comparison to Crystallization in Small Molecule Liquids Okerberg, B., Marand, H., Douglas, JF Polymer, 49 579-587 (2008).
- Dendritic Growth of Poly(e-caprolactone) Crystals from Compatible Blends with Poly(t-butyl acrilate) at the Air/Water Interface. Li, B; Marand, H.; Esker, A. Journal of Polymer Science, Polymer Physics Edition, submitted (2007).
- Crystal Morphologies in Thin Films of PEO/PMMA Blends. B. Okerberg, H. Marand, J. Mat. Sci. 42 (12), 4521-4529 (2007).
- Crystallization Processes in Ethylene-Styrene Copolymers by Conventional and Modulated Differential Scanning Calorimetry: 1. Linear Polyethylene and Low Styrene Content Copolymers. Z. Huang, H. Marand, W. Cheung, M. Guest Macromolecules, 37(26), 9922-9932 (2004).
- Isothermal Lamellar Thickening in Linear Polyethylene: Correlation between the Evolution of the Degree of Crystallinity and the Melting Temperature H. Marand, Z. Huang, Macromolecules, 37(17), 6492-6497 (2004).
- Alan F. Clifford Faculty Service Award, 2012
- Jimmy Viers Faculty Teaching Award, 2007
- XCaliber Certificate of Excellence, 2004
- NSF Young Investigator Award, 1993
- B.S. École National Supérieure de Chimie de Paris, France, 1982
- M.S. University of Massachusetts, Amherst, 1983
- Ph.D. University of Massachusetts, Amherst, 1988
- Postdoctoral Associate, Michigan Molecular Institute, 1987–1989