Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds

The ring-opening polymerization of l-lactic acid O-carboxyanhydrides was initiated by triisopropoxyneodymium in toluene-THF mixtures. Typically, high yields and relatively high molecular weight PLAs were obtained within 4 h at 25 °C. The reaction was highly controllable and easy to conduct, and the...

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Detalles Bibliográficos
Autores principales: He, Zhengguo, Jiang, Lin, Chuan, Yongming, Li, Hongli, Yuan, Minglong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6270375/
https://www.ncbi.nlm.nih.gov/pubmed/24132199
http://dx.doi.org/10.3390/molecules181012768
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author He, Zhengguo
Jiang, Lin
Chuan, Yongming
Li, Hongli
Yuan, Minglong
author_facet He, Zhengguo
Jiang, Lin
Chuan, Yongming
Li, Hongli
Yuan, Minglong
author_sort He, Zhengguo
collection PubMed
description The ring-opening polymerization of l-lactic acid O-carboxyanhydrides was initiated by triisopropoxyneodymium in toluene-THF mixtures. Typically, high yields and relatively high molecular weight PLAs were obtained within 4 h at 25 °C. The reaction was highly controllable and easy to conduct, and the molecular weight distribution of the PLAs was rather narrow (Mw/Mn = 1.10–1.36). NMR analysis showed that one end of the PLA chain consisted of an isopropoxy group, while the other end of the chain contained a hydroxyl group. Due to their availability and high polymerizability, Lac-OCAs are promising monomers for the preparation of tailored architectures derived from well-defined PLAs.
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spelling pubmed-62703752018-12-18 Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds He, Zhengguo Jiang, Lin Chuan, Yongming Li, Hongli Yuan, Minglong Molecules Article The ring-opening polymerization of l-lactic acid O-carboxyanhydrides was initiated by triisopropoxyneodymium in toluene-THF mixtures. Typically, high yields and relatively high molecular weight PLAs were obtained within 4 h at 25 °C. The reaction was highly controllable and easy to conduct, and the molecular weight distribution of the PLAs was rather narrow (Mw/Mn = 1.10–1.36). NMR analysis showed that one end of the PLA chain consisted of an isopropoxy group, while the other end of the chain contained a hydroxyl group. Due to their availability and high polymerizability, Lac-OCAs are promising monomers for the preparation of tailored architectures derived from well-defined PLAs. MDPI 2013-10-15 /pmc/articles/PMC6270375/ /pubmed/24132199 http://dx.doi.org/10.3390/molecules181012768 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ 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
He, Zhengguo
Jiang, Lin
Chuan, Yongming
Li, Hongli
Yuan, Minglong
Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title_full Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title_fullStr Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title_full_unstemmed Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title_short Ring-Opening Polymerization of l-Lactic Acid O-Carboxyanhydrides Initiated by Alkoxy Rare Earth Compounds
title_sort ring-opening polymerization of l-lactic acid o-carboxyanhydrides initiated by alkoxy rare earth compounds
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6270375/
https://www.ncbi.nlm.nih.gov/pubmed/24132199
http://dx.doi.org/10.3390/molecules181012768
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AT chuanyongming ringopeningpolymerizationofllacticacidocarboxyanhydridesinitiatedbyalkoxyrareearthcompounds
AT lihongli ringopeningpolymerizationofllacticacidocarboxyanhydridesinitiatedbyalkoxyrareearthcompounds
AT yuanminglong ringopeningpolymerizationofllacticacidocarboxyanhydridesinitiatedbyalkoxyrareearthcompounds

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