Tubular reactor synthesis of styrene–methacrylate copolymers in solution with supercritical carbon dioxide

Terpolymerizations of styrene, methyl methacrylate, and glycidyl methacrylate in solution with supercritical CO 2 were carried out in a tubular reactor up to almost complete monomer conversion. The residence time behavior of the set-up was investigated by injecting a tracer pulse and measuring the t...

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Bibliographic Details
Published inThe Journal of supercritical fluids Vol. 39; no. 2; pp. 246 - 252
Main Authors Beuermann, Sabine, Buback, Michael, Gadermann, Moritz, Jürgens, Michael, Saggu, Durga Prasad
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2006
Subjects
In-line FT-NIR spectroscopy
Radical terpolymerization
Supercritical carbon dioxide
Tubular reactor
In-line FT-NIR spectroscopy
Radical terpolymerization
Supercritical carbon dioxide
Tubular reactor
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Summary:Terpolymerizations of styrene, methyl methacrylate, and glycidyl methacrylate in solution with supercritical CO 2 were carried out in a tubular reactor up to almost complete monomer conversion. The residence time behavior of the set-up was investigated by injecting a tracer pulse and measuring the tracer concentration at the reactor exit via in-line FT-near infrared (NIR) spectroscopy. Molecular weight control during polymerization was achieved either by initiator concentration or by the addition of a catalytic chain-transfer agent. Number average molecular weights were adjusted to about 2500 g mol −1 to yield products which are suitable components for powder coating applications.
ISSN:0896-8446
1872-8162
DOI:10.1016/j.supflu.2006.01.001