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Kinetic model of a Diels-Alder reaction in a molten state : thermal and viscoelastic behaviour
Ručigaj, Aleš (Avtor), Kobal, Tjaž (Avtor), Šebenik, Urška (Avtor), Krajnc, Matjaž (Avtor)

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URLURL - Izvorni URL, za dostop obiščite https://link.springer.com/article/10.1007/s00289-019-02805-z Povezava se odpre v novem oknu

Izvleček
Information on the reaction kinetics in the melt is a valuable prerequisite for a successful application of self-healing ability to benzoxazine-based thermosetting resins. The goal of this research was to develop a kinetic model of the Diels–Alder (DA) reaction in a molten state between N-phenylmaleimide (PMI) and benzoxazine-containing furan group (G-f). Rheological data were found to be of significant importance in the kinetic model development and interpretation. The increase in viscosity, the occurrence of side reactions, and equilibrium between DA and r-DA reaction were identified as possible reasons for the deceleration of reaction rate and limiting conversion. After a thorough investigation of the studied system, accompanied by the knowledge from the literature, the potential reason for the incomplete conversion of reactants was reduced to the crossover between chemically and diffusion-controlled reaction due to the increasing viscosity of reaction system. Accordingly, the kinetic model based on the combination of Rabinowitch equation and Chern–Poehlein model was used to accurately describe the progress of the studied reaction in the molten state.

Jezik:Angleški jezik
Ključne besede:Diels-Alder reaction, molten state, thermal behaviour, rheology, kinetic model
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Leto izida:2020
Št. strani:str. 1377-1397
Številčenje:Vol. 77, no. 3
UDK:66.09
ISSN pri članku:0170-0839
DOI:10.1007/s00289-019-02805-z Povezava se odpre v novem oknu
COBISS.SI-ID:1538222787 Povezava se odpre v novem oknu
Število ogledov:433
Število prenosov:179
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
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Gradivo je del revije

Naslov:Polymer bulletin
Skrajšan naslov:Polym. bull.
Založnik:Springer
ISSN:0170-0839
COBISS.SI-ID:26154240 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Številka projekta:P2-0191
Naslov:Kemijsko inženirstvo

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:Diels-Alderjeva reakcija, staljeno stanje, termično obnašanje, reologija, kinetični modeli

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