Izvorni znanstveni članak

https://doi.org/10.5562/cca3220

Polymerization of 1,4-dinitrosobenzene: Kinetics and Submicrocrystal Structure

Petar Bibulić ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
Igor Rončević ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
Vladimir Bermanec ; Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
Hrvoj Vančik orcid.org/0000-0002-4218-9214 ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia

Sažetak

In this study, the structure of the polycrystalline poly(l,4-phenyleneazine N,N-dioxide) was investigated by Scanning Electron Microscopy and related with the previously calculated molecular structure. Kinetics of polymerization of 1,4-dinitrosobenzene, prepared by both cryogenic UV photolysis and in vacuo deposition were measured by time-resolved FT-IR spectroscopy. Acquired data was analyzed by curve fitting with the standard Avrami-Erofeev and two-step consecutive reactions models. Activation parameters were calculated from Arrhenius and Eyring-Polanyi equations, for both models. The results obtained by using the two models, along with the goodness of-fit parameters, were compared. It was shown that both bulk-based and reaction-based models can be used to adequately describe solid-state chemical reaction kinetics. Furthermore, a two-step consecutive reactions model is a suitable alternative to the most commonly used Avrami-Erofeev model.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

scanning electron microscopy; polymerization; kinetic models; solid state; activation parameters

Hrčak ID:

190801

URI

https://hrcak.srce.hr/190801

Datum izdavanja:

18.12.2017.

Posjeta: 1.381 *