Organocatalysts for the synthesis of ...
Type de document :
Article dans une revue scientifique
DOI :
URL permanente :
Titre :
Organocatalysts for the synthesis of poly(ethylene terephthalate-co-isosorbide terephthalate) : a combined experimental and DFT study
Auteur(s) :
Stanley, Nicholas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
CHENAL, Thomas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Jacquel, Nicolas [Auteur]
Roquette Frères
Saint‐Loup, René [Auteur]
Roquette Frères
Prates Ramalho, Joao Paulo [Auteur]
Universidade de Évora
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
CHENAL, Thomas [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Jacquel, Nicolas [Auteur]
Roquette Frères
Saint‐Loup, René [Auteur]
Roquette Frères
Prates Ramalho, Joao Paulo [Auteur]
Universidade de Évora
Zinck, Philippe [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Macromolecular Materials and Engineering
Nom court de la revue :
Macromol. Mater. Eng.
Numéro :
304
Pagination :
1900298
Éditeur :
Wiley
Date de publication :
2019-06-25
ISSN :
1439-2054
Mot(s)-clé(s) en anglais :
polymerisation
organocatalysis
DFT
mechanism
isosorbide
organocatalysis
DFT
mechanism
isosorbide
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
Organocatalysts are assessed for the insertion of isosorbide, a rigid, biobased diol monomer, into poly(ethylene terephthalate). A sulfonic acid (p-toluenesulfonic acid—APTS), an amidine base (1,8-diazabicyclo [5.4.0] ...
Lire la suite >Organocatalysts are assessed for the insertion of isosorbide, a rigid, biobased diol monomer, into poly(ethylene terephthalate). A sulfonic acid (p-toluenesulfonic acid—APTS), an amidine base (1,8-diazabicyclo [5.4.0] undec-7-ene—DBU) and a guanidine base (1,5,7-triazabicyclo[4.4.0]dec-5-ene—TBD) successfully catalyze the polymerization. The reaction mechanisms are studied by density functional theory. A bifunctional activation is observed in the presence of the sulfonic acid, the carbonyl moiety being activated via the acidic proton of APTS and the alcohol via the basic oxygen. Regarding DBU, a mechanism based on a basic activation of the alcohol rather than a nucleophilic attack of the catalyst is evidenced. The difference observed between TBD and DBU is attributed to a better H-bonding ability of the former versus the latter.Lire moins >
Lire la suite >Organocatalysts are assessed for the insertion of isosorbide, a rigid, biobased diol monomer, into poly(ethylene terephthalate). A sulfonic acid (p-toluenesulfonic acid—APTS), an amidine base (1,8-diazabicyclo [5.4.0] undec-7-ene—DBU) and a guanidine base (1,5,7-triazabicyclo[4.4.0]dec-5-ene—TBD) successfully catalyze the polymerization. The reaction mechanisms are studied by density functional theory. A bifunctional activation is observed in the presence of the sulfonic acid, the carbonyl moiety being activated via the acidic proton of APTS and the alcohol via the basic oxygen. Regarding DBU, a mechanism based on a basic activation of the alcohol rather than a nucleophilic attack of the catalyst is evidenced. The difference observed between TBD and DBU is attributed to a better H-bonding ability of the former versus the latter.Lire moins >
Langue :
Anglais
Audience :
Non spécifiée
Projet ANR :
Établissement(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Date de dépôt :
2021-05-20T11:53:18Z
2021-06-02T09:56:41Z
2021-06-02T09:56:41Z
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