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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > July  >
In the Laboratory
Understanding Chemical Structure/Physical Property Relationships in Polymers through Molecular Modeling and Thermal Analysis Techniques
A. Kim and J. L. Musfeldt
SUNY at Binghamton, Department of Chemistry, P.O. Box 6016, Binghamton, NY 13902-6016
Cover
July 1998
Vol. 75 No. 7
p. 893
Abstract
Molecular modeling and thermal analysis have been integrated into our Polymer Science course in order to encourage multifaceted problem solving and allow students to systematically explore the role of chemical structure in determining the glass transition temperature of a polymer. A variety of case studies, such as the effect of side-chain length and linearity in poly-methylmethacrylate derivatives or a series of ethylene oxide and ethylene sulfide constitutional isomers, are presented as interesting starting points for such a project. Students compare their calculated glass transition temperatures with experimental and literature values, rationalizing the observed trends using entropy arguments. This kind of hands-on project is designed to be accompanied by a classroom discussion of the Configurational Entropy Model and the WLF equation.
More Information
*  Citation
 Kim, A.; Musfeldt, Janice L. J. Chem. Educ. 1998 75 893.
*  Keywords
 Polymer Chemistry, Physical Chemistry, Laboratory Instruction
*  History
 Created:
Last Updated:		 June 22, 1999
June 24, 2005
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