期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 214, 期 4, 页码 423-434出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201200449
关键词
E-polycaprolactone; microwave chemistry; microwave effects; temperature monitoring; viscosity
资金
- Christian Doppler Society (CDG)
The relationship among viscosity and microwave absorptivity of organic solvents/polymers, the stirring rate, and the resulting errors in temperature measurement upon microwave dielectric heating is investigated. For a set of common solvents and polymers covering a broad range of viscosities and microwave absorptivities significant variations in the temperatures simultaneously recorded by external infrared sensors and internal fiber-optic probes are experienced. The implications of these apparent difficulties in establishing the genuine reaction temperature for microwave-heated viscous reaction systems are evaluated for a ring-opening polymerization and for the synthesis of a surfactant.
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