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In‐Line Monitoring of Vinyl Chloride Suspension Polymerization with Near Infrared Spectroscopy, 2 ‐ Design of an Advanced Control Strategy
Author(s) -
de Faria João Miguel,
Machado Fabricio,
Lima Enrique Luis,
Pinto José Carlos
Publication year - 2010
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201000013
Subject(s) - vinyl chloride , suspension (topology) , suspension polymerization , materials science , calibration , near infrared spectroscopy , spectroscopy , infrared spectroscopy , polymerization , line (geometry) , chemical engineering , chemistry , optics , composite material , polymer , organic chemistry , physics , mathematics , quantum mechanics , homotopy , pure mathematics , copolymer , engineering , geometry
Near infrared spectroscopy (NIRS) may constitute a powerful tool for in‐line monitoring of morphological properties of PVC particles in suspension polymerizations. It is shown that dynamic trajectories of morphological properties, as predicted with NIR‐based calibration models, change smoothly along the batch; thus, these trajectories can be used as references for process monitoring and control. It is also shown that modification of operation variables during the batch leads to modification of the final morphological properties of the powder. This indicates that the morphology of PVC grains can be manipulated along the batch and that advanced NIR‐based control procedures can be implemented for control of the morphological properties of PVC resins, as illustrated through simulation.