New fluorescent monomers and polymers displaying an intramolecular proton-transfer mechanism in the electronically excited state. III. Thermogravimetric stability study of the benzazolylvinylene derivatives

作者: Leandra Franciscato Campo , Fabiano Severo Rodembusch , Valter Stefani

DOI: 10.1002/APP.22292

关键词: Thermal stabilityAtmospheric temperature rangePhysical chemistryExcited stateChemistryThermogravimetric analysisOrder of reactionPolymer chemistryDifferential scanning calorimetryActivation energyPolymer

摘要: Six fluorescent benzazolylvinylene derivatives were studied by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and related molecular parameters. The thermal stability was determined in terms of the steps degradation its fitting parameters, such as maximum rate (Rmax), temperature (TRmax), range, which is to half-width at half-height values (Γ), kinetic parameters: activation energy (Ea), pre-exponential factor (A), reaction order (n) obtained Barrett's method. Different organic substitutes heteroatoms do not play a fundamental role behavior dyes. compensation effect between confirmed. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 495–500, 2006

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