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Open AccessArticle

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

1
POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
2
Chemical and Environmental Engineering Department, Polytechnic School, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018 Donostia-San Sebastián, Spain
3
Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
4
IKERBASQUE, Basque Foundation for Science, María Díaz Haroko Kalea, 3, 48013 Bilbao, Spain
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(1), 17; https://doi.org/10.3390/polym12010017
Received: 1 December 2019 / Revised: 16 December 2019 / Accepted: 18 December 2019 / Published: 20 December 2019
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. View Full-Text
Keywords: isodimorphism; random copolymers; crystallization; nucleation; growth rate isodimorphism; random copolymers; crystallization; nucleation; growth rate
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MDPI and ACS Style

Safari, M.; Mugica, A.; Zubitur, M.; Martínez de Ilarduya, A.; Muñoz-Guerra, S.; Müller, A.J. Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling. Polymers 2020, 12, 17. https://doi.org/10.3390/polym12010017

AMA Style

Safari M, Mugica A, Zubitur M, Martínez de Ilarduya A, Muñoz-Guerra S, Müller AJ. Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling. Polymers. 2020; 12(1):17. https://doi.org/10.3390/polym12010017

Chicago/Turabian Style

Safari, Maryam; Mugica, Agurtzane; Zubitur, Manuela; Martínez de Ilarduya, Antxon; Muñoz-Guerra, Sebastián; Müller, Alejandro J. 2020. "Controlling the Isothermal Crystallization of Isodimorphic PBS-ran-PCL Random Copolymers by Varying Composition and Supercooling" Polymers 12, no. 1: 17. https://doi.org/10.3390/polym12010017

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