Expt 3_FTIR.doc - Experiment 3 Fourier Transform Infrared...

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Experiment 3 Fourier Transform Infrared Spectroscopy Introduction The repeat units for the polymers to be examined are given below; FTIR signatures relate to the polymer structures. (a) (b) (c) Figure 1. Repeat units for (a) polyethylene, (b) polypropylene, and (c) polystyrene Objective Students become familiar with vibrational properties of polymers and FTIR measurements Examine how different bonds and functional groups give rise to different FTIR signatures Estimating % crystallinity in semi-crystalline polymers Specimens to be examined Low density polyethylene High density polyethylene Polystyrene Polypropylene
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Report Requirements Cover page with abstract Introduction Give a brief description of FTIR as a characterization tool with a schematic of the typical arrangement in which the main components are labeled. What are the principles of the technique? Describe the type of chemical and structural information that one can obtain.
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