The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid

The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 °C was catalyzed by H(3)PW(12)O(40)·13H(2)O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found...

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Autores principales: Aouissi, Ahmed, Al-Deyab, Salem S., Al-Shahri, Hassan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International 2010
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6257351/
https://www.ncbi.nlm.nih.gov/pubmed/20335988
http://dx.doi.org/10.3390/molecules15031398
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author Aouissi, Ahmed
Al-Deyab, Salem S.
Al-Shahri, Hassan
author_facet Aouissi, Ahmed
Al-Deyab, Salem S.
Al-Shahri, Hassan
author_sort Aouissi, Ahmed
collection PubMed
description The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 °C was catalyzed by H(3)PW(12)O(40)·13H(2)O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found that the yield and the viscosity of the polymer depend on the proportion of acetic anhydride, the presence of the latter in the reactant mixture being required for the ring-opening. The catalytic activity of the alumina-supported heteropolyacid results showed that Brønsted acid sites are more effective than Lewis ones for the cationic ring-opening polymerization.
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spelling pubmed-62573512018-12-04 The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid Aouissi, Ahmed Al-Deyab, Salem S. Al-Shahri, Hassan Molecules Article The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 °C was catalyzed by H(3)PW(12)O(40)·13H(2)O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found that the yield and the viscosity of the polymer depend on the proportion of acetic anhydride, the presence of the latter in the reactant mixture being required for the ring-opening. The catalytic activity of the alumina-supported heteropolyacid results showed that Brønsted acid sites are more effective than Lewis ones for the cationic ring-opening polymerization. Molecular Diversity Preservation International 2010-03-08 /pmc/articles/PMC6257351/ /pubmed/20335988 http://dx.doi.org/10.3390/molecules15031398 Text en © 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Aouissi, Ahmed
Al-Deyab, Salem S.
Al-Shahri, Hassan
The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title_full The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title_fullStr The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title_full_unstemmed The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title_short The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid
title_sort cationic ring-opening polymerization of tetrahydrofuran with 12-tungstophosphoric acid
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6257351/
https://www.ncbi.nlm.nih.gov/pubmed/20335988
http://dx.doi.org/10.3390/molecules15031398
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