Synthesis of Thermoresponsive Polyurethane from 2-Methylaziridine and Supercritical Carbon Dioxide

Synthesis of Thermoresponsive Polyurethane from 2-Methylaziridine and Supercritical Carbon Dioxide

Under pressure: Temperature‐dependent optical transmission in aqueous solution is exhibited by polyurethanes that are obtained by copolymerization of 2‐methylaziridine and supercritical CO2 (scCO2; see scheme). The transmittance drops sharply at the lower critical solution temperature (LCST). The mo...

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Veröffentlicht in:Angewandte Chemie International Edition 2004-01, Vol.43 (6), p.717-719
Hauptverfasser: Ihata, Osamu, Kayaki, Yoshihito, Ikariya, Takao
Format: Artikel
Sprache:eng
Schlagworte:
carbon dioxide fixation
copolymerization
polyurethanes
supercritical fluids
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Zusammenfassung:Under pressure: Temperature‐dependent optical transmission in aqueous solution is exhibited by polyurethanes that are obtained by copolymerization of 2‐methylaziridine and supercritical CO2 (scCO2; see scheme). The transmittance drops sharply at the lower critical solution temperature (LCST). The molecular weight, content of urethane linkages, and LCST value of the polyurethanes are controllable simply by changing the CO2 pressure.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200352215