Environmental Engineering Reference
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mL of dichloromethane. Trifluoroacetic acid (TFA, Aldrich) was added to the solution
(0.55 mL, 5 molar equivalent), and the mixture stirred at room temperature overnight.
The carboxylic acid-functional graft copolymer was isolated by vacuum stripping
dichloromethane (Aldrich), TFA, and
tert
-butanol. Each synthesis step was monitored
using nuclear magnetic resonance spectroscopy and Fourier transform infrared
spectroscopy. The complete synthesis procedure is represented in Figure 8.4.
Figure 8.4
Steps in
APGC synthesis.
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