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The Preparation of a UV-Light-Absorbing Polymer: A Project-Oriented Laboratory Experiment for the Introductory Organic Chemistry Curriculum
Ist Teil von
Journal of chemical education, 1999-11, Vol.76 (11), p.1523
Ort / Verlag
Easton: Division of Chemical Education
Erscheinungsjahr
1999
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
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.