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In‐Line Monitoring of Vinyl Chloride Suspension Polymerization with Near‐Infrared Spectroscopy, 1 – Analysis of Morphological Properties
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.200900035
Subject(s) - vinyl chloride , suspension (topology) , materials science , plasticizer , partial least squares regression , vinyl acetate , suspension polymerization , analytical chemistry (journal) , spectroscopy , infrared spectroscopy , polyvinyl chloride , polymerization , spectral line , particle (ecology) , chemical engineering , chemistry , composite material , chromatography , polymer , organic chemistry , mathematics , engineering , statistics , physics , oceanography , quantum mechanics , astronomy , homotopy , pure mathematics , copolymer , geology
It is demonstrated that during suspension polymerizations it is possible to monitor morphological characteristics of PVC resins such as bulk density, cold plasticizer absorption and average particle diameter in‐line and in real time using NIR spectroscopy. NIR spectra are obtained at different experimental conditions, showing that the spectra are sensitive to changes in the PVC properties. Standard mathematical procedures (partial least squares regression) are used to build empirical models and correlate the morphological properties with the obtained NIR spectra, allowing for monitoring of the PVC morphology in‐line and in real time.