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In situ monitoring of styrene polymerization using Raman spectroscopy. Multi‐scale approach of homogeneous and heterogeneous polymerization processes
Author(s) -
Brun Nadège,
Youssef Itab,
Chevrel MarieClaire,
Chapron David,
Schrauwen Cornélius,
Hoppe Sandrine,
Bourson Patrice,
Durand Alain
Publication year - 2013
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4279
Subject(s) - miniemulsion , raman spectroscopy , polymerization , emulsion polymerization , styrene , materials science , rheometer , radical polymerization , polymer chemistry , chemical engineering , analytical chemistry (journal) , chemistry , polymer , rheology , organic chemistry , copolymer , composite material , optics , physics , engineering
Free radical polymerization of styrene was monitored in situ by combining Raman spectroscopy to other experimental techniques (gravimetry and rheology). Three different processes were investigated: bulk, emulsion and miniemulsion polymerization. A complete analysis of the evolution of Raman spectrum during the course of reaction showed that a lot of information about molecular dynamics could be extracted and related to chemical phenomena. In addition, we report for the first time the coupling of Raman spectroscopy to a rheometer in order to monitor styrene bulk polymerization both at the scale of chemical bonds and at the scale of macroscopic phenomena (viscosity variation). Copyright © 2013 John Wiley & Sons, Ltd.