Browsing by Author "Spoor, Erik"

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    UV/VIS-spectroscopic inline measurement for the detection of fouling processes during the polymerization of N-vinylpyrrolidone
    (2023) Spoor, Erik; Welzel, Stefan; Nieken, Ulrich; Rädle, Matthias
    With the goal to better process the monitoring of occurring fouling, a backscatter probe was developed to perform in-line measurements in a half-shell reactor during the reaction of N-vinylpyrrolidone (NVP) to polyvinylpyrrolidone (PVP). The measurement technique detects the changes of bands in the UV range, which allows a direct correlation with the concentration. Thus, the measured absorbance signal allows a conclusion on the accumulation of fouling in the reactor and on changes in the conversion at the measurement location.