Demonstrating Unique Behaviors of Polymers
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Jialong Shen [1] ; Alan E. Tonelli [1]
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[1] North Carolina State University
North Carolina State University
Township of Raleigh, Estados Unidos
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 94, Nº 11, 2017, págs. 1738-1745
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Behaviors characteristic of and unique to polymers are demonstrated through four simple experiments: (i) comparison of the dilute solution viscosities of a small molecule and a high-molecular-weight polymer, (ii) observation of the properties of a “slime”, (iii) the stretching of a rubber band, and (iv) a simple paper-and-pencil simulation experiment for the step-growth polymerization of X–Y (or A–B) types of monomers. The described demos have been performed for audiences ranging from middle school to university graduate students to successfully introduce and explain why polymers and materials made from them behave uniquely.
