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  • Author or Editor: G. Fedorova x
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The thermodegradation of polybutylmethacrylates synthesized from all four isomers of butyl methacrylate has been investigated by TG and DTA methods in oxidative, inert and self-generating atmospheres. It was established that the influence of the atmosphere surrounding the polymer on the temperature characteristics of the samples depends on the degree of branching of the substituents in the polybutylmethacrylate (PBMA). It is assumed that the difference in thermodegradation of isomeric polybutylmethacrylates is related to the difference in the degree of substitution of the α-carbon in the ester substituent.

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Journal of Thermal Analysis and Calorimetry
Authors: Yu. Sazanov, M. Goykhman, I. Podeshvo, G. Fedorova, G. Mikhailov, and V. Kudriavtsev

Abstract  

Thermal analysis of polyester and polyamides based on vanillic acid derivative — terephthaloyl-bis-(3-methoxy-4-oxy benzoic) acid has been reported. Different behaviours with the appearance of the thermal degradation, stucturization and carbonization stages were detected. Thermochemical behaviour of polymers under investigation revealed that technical lignin derivative — vanillic acid are a promise for obtaining polymer materials with good properties.

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The thermal transformations of a number of modelo-amic acids were investigated by thermogravimetric analysis (TG). The TG data pointed to cyclodehydration of the amic acids and accompanying thermal degradation processes. TG in combination with mass-spectrometric thermal analysis provided sufficient information for the description of these processes on both qualitative and quantitative levels.

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Journal of Thermal Analysis and Calorimetry
Authors: I. E. Simanovich, G. N. Fedorova, N. V. Mikhailova, A. S. Bobasheva, A. V. Gribanov, and Yu. N. Sazanov

Polyamic acid (PAA) furyl alcohol (FA) and their mixtures in different ratios were investigated by DTA. The effects of the solvent and the component ratio on the thermal characteristics of the final products were established. It was shown that when the PAA-FA composition is heated, PAA is the initiator of the polymerization of FA, and the interaction in the system is profoundly affected by the component ratio and the temperature.

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