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

Autor: Michael Buback, Durga Prasad Saggu, Sabine Beuermann, Michael Jürgens, Moritz Gadermann
Rok vydání: 2006
Předmět:
Zdroj: The Journal of Supercritical Fluids. 39:246-252
ISSN: 0896-8446
DOI: 10.1016/j.supflu.2006.01.001
Popis: Terpolymerizations of styrene, methyl methacrylate, and glycidyl methacrylate in solution with supercritical CO2 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.
Databáze: OpenAIRE