The Kinetics of Formation of Microporous Polytriazine in Diphenyl Sulfone.
- Resource Type
- Article
- Authors
- Galukhin, Andrey; Nikolaev, Ilya; Nosov, Roman; Vyazovkin, Sergey
- Source
- Molecules. Jun2022, Vol. 27 Issue 11, p3605-3605. 11p.
- Subject
- *ISOTHERMAL temperature
*POLYMERIZATION kinetics
*DIPHENYL
*ELECTRON microscopy
*DIFFERENTIAL scanning calorimetry
*SULFONES
- Language
- ISSN
- 1420-3049
This study highlights the value of nonisothermal kinetic methods in selecting temperature conditions for the isothermal preparation of microporous polymeric materials. A dicyanate ester is synthesized and the kinetics of its polymerization in diphenyl sulfone are studied by calorimetry under nonisothermal conditions. The kinetics are analyzed by a model-based approach, using the Kamal model, as well as by a model-free approach, using an advanced isoconversional method. Both approaches correctly predict the time to completion of polymerization at a given temperature. The material prepared independently at the predicted temperature is characterized by electron microscopy and CO2 adsorption measurements and is confirmed to possess a microporous structure with a multimodal distribution of micropores with two major maxima at ~0.5 and 0.8 nm. [ABSTRACT FROM AUTHOR]