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The Kinetics of Formation of Microporous Polytriazine in Diphenyl Sulfone.

ABSTRACT: 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.

SUBMITTER: Galukhin A

PROVIDER: S-EPMC9181875 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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The Kinetics of Formation of Microporous Polytriazine in Diphenyl Sulfone.

Galukhin Andrey A Nikolaev Ilya I Nosov Roman R Vyazovkin Sergey S

Molecules (Basel, Switzerland) 20220603 11

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 ...[more]

PMID: 35684538

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