An ATR-FTIR spectrometry technique with light conduit and diamond-composite sensor was used to perform in-line monitoring of butyl acrylate, methyl methacrylate, and vinyl acetate batch emulsion homo- and copolymerizations. This technique was found to be ideal for determining individual monomer conversions and copolymer composition changes as a function of time when those polymerizations were carried out in aqueous media. The results obtained from the ReactIR™ 1000 reaction analysis system agreed well with those determined by traditional gravimetric and 1H-NMR spectrometry methods.
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Hua et al. (2002) studied this question.
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