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Direct linkSingfield, Kathy L.; Chisholm, Roderick A.; King, Thomas L. – Journal of Chemical Education, 2012
A laboratory experiment currently used in an undergraduate physical chemistry lab to investigate the rates of crystallization of a polymer is described. Specifically, the radial growth rates of typical disc-shaped crystals, called spherulites, growing between microscope glass slides are measured and the data are treated according to polymer…
Descriptors: Chemistry, Plastics, Laboratory Experiments, Science Instruction
Weizman, Haim; Nielsen, Christian; Weizman, Or S.; Nemat-Nasser, Sia – Journal of Chemical Education, 2011
This laboratory experiment exposes students to the chemistry of self-healing polymers based on a Diels-Alder reaction. Students accomplish a multistep synthesis of a monomer building block and then polymerize it to form a cross-linked polymer. The healing capability of the polymer is verified by differential scanning calorimetry (DSC) experiments.…
Descriptors: Plastics, Organic Chemistry, Laboratory Experiments, College Science
Badrinarayanan, Prashanth; Kessler, Michael R. – Journal of Chemical Education, 2010
A detailed understanding of the effect of thermal history on the thermal properties of semicrystalline polymers is essential for materials scientists and engineers. In this article, we describe a materials science laboratory to demonstrate the effect of parameters such as heating rate and isothermal annealing conditions on the thermal behavior of…
Descriptors: Plastics, Science Laboratories, Science Instruction, College Science
