The Preparation of a UV-Light-Absorbing Polymer: A Project-Oriented Laboratory Experiment for the Introductory Organic Chemistry Curriculum

A laboratory experiment is described that combines organic synthesis, spectroscopy, and polymer chemistry and is suitable for the sophomore organic chemistry curriculum. In this three-week sequence, students synthesize and characterize the UV-absorber 2-(2',4'-dimethylbenzoyl)benzoic acid...

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Veröffentlicht in:	Journal of chemical education 1999-11, Vol.76 (11), p.1523
Hauptverfasser:	Poon, Thomas, Eller, Crystal F, Eller, Leah R, Jones, Kenya M, Massello, William, Norris, Cynthia M, Oelrich, Jeffrey A, Pluim, Thomas A, McIntyre, Jean P, Dorigo, Andrea E, Davis, Drew J, Davis, Matthew A, Izumi, Heather K, Kelley, Kurt H, Melamed, Megan L, Poplawski, Sarah E, St. Clair, Jason M, Stokes, Matthew P, Wheeler, Wells C, Wilkes, Erin E
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical synthesis Curricula Irradiation Light Organic chemistry Polymers Projects Research Methodology Science Curriculum Science education Scientific method Ultraviolet radiation
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A laboratory experiment is described that combines organic synthesis, spectroscopy, and polymer chemistry and is suitable for the sophomore organic chemistry curriculum. In this three-week sequence, students synthesize and characterize the UV-absorber 2-(2',4'-dimethylbenzoyl)benzoic acid and incorporate it into films of polymethylmethacrylate. The project exposes students to a variety of techniques and topics including UV-vis, nuclear magnetic resonance and IR spectroscopy, free radical polymerization, vacuum filtration, use of a separatory funnel for extraction and washing, melting point determination, recrystallization, reflux, and Friedel-Crafts acylation.
ISSN:	0021-9584 1938-1328
DOI:	10.1021/ed076p1523