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Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling

In this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(ε-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us. We perform nucleation and spherulitic growth kinetics by polarized light optical micros...

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Autores principales: Safari, Maryam, Mugica, Agurtzane, Zubitur, Manuela, Martínez de Ilarduya, Antxon, Muñoz-Guerra, Sebastián, Müller, Alejandro J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022771/
https://www.ncbi.nlm.nih.gov/pubmed/31861773
http://dx.doi.org/10.3390/polym12010017
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author Safari, Maryam
Mugica, Agurtzane
Zubitur, Manuela
Martínez de Ilarduya, Antxon
Muñoz-Guerra, Sebastián
Müller, Alejandro J.
author_facet Safari, Maryam
Mugica, Agurtzane
Zubitur, Manuela
Martínez de Ilarduya, Antxon
Muñoz-Guerra, Sebastián
Müller, Alejandro J.
author_sort Safari, Maryam
collection PubMed
description In this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(ε-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us. We perform nucleation and spherulitic growth kinetics by polarized light optical microscopy (PLOM) and overall isothermal crystallization kinetics by differential scanning calorimetry (DSC). Selected samples were also studied by real-time wide angle X-ray diffraction (WAXS). Under isothermal conditions, only the PBS-rich phase or the PCL-rich phase could crystallize as long as the composition was away from the pseudo-eutectic point. In comparison with the parent homopolymers, as comonomer content increased, both PBS-rich and PCL-rich phases nucleated much faster, but their spherulitic growth rates were much slower. Therefore, the overall crystallization kinetics was a strong function of composition and supercooling. The only copolymer with the eutectic composition exhibited a remarkable behavior. By tuning the crystallization temperature, this copolyester could form either a single crystalline phase or both phases, with remarkably different thermal properties.
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spelling pubmed-70227712020-03-11 Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling Safari, Maryam Mugica, Agurtzane Zubitur, Manuela Martínez de Ilarduya, Antxon Muñoz-Guerra, Sebastián Müller, Alejandro J. Polymers (Basel) Article In this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(ε-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us. We perform nucleation and spherulitic growth kinetics by polarized light optical microscopy (PLOM) and overall isothermal crystallization kinetics by differential scanning calorimetry (DSC). Selected samples were also studied by real-time wide angle X-ray diffraction (WAXS). Under isothermal conditions, only the PBS-rich phase or the PCL-rich phase could crystallize as long as the composition was away from the pseudo-eutectic point. In comparison with the parent homopolymers, as comonomer content increased, both PBS-rich and PCL-rich phases nucleated much faster, but their spherulitic growth rates were much slower. Therefore, the overall crystallization kinetics was a strong function of composition and supercooling. The only copolymer with the eutectic composition exhibited a remarkable behavior. By tuning the crystallization temperature, this copolyester could form either a single crystalline phase or both phases, with remarkably different thermal properties. MDPI 2019-12-20 /pmc/articles/PMC7022771/ /pubmed/31861773 http://dx.doi.org/10.3390/polym12010017 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Safari, Maryam
Mugica, Agurtzane
Zubitur, Manuela
Martínez de Ilarduya, Antxon
Muñoz-Guerra, Sebastián
Müller, Alejandro J.
Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title_full Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title_fullStr Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title_full_unstemmed Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title_short Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling
title_sort controlling the isothermal crystallization of isodimorphic pbs-ran-pcl random copolymers by varying composition and supercooling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022771/
https://www.ncbi.nlm.nih.gov/pubmed/31861773
http://dx.doi.org/10.3390/polym12010017
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