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Bio-based PBT copolyesters derived from d-glucose: Influence of composition on properties

Opened Access Bio-based PBT copolyesters derived from d-glucose: Influence of composition on properties

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Autor: Japu, Cristina
Martínez de Ilarduya, Antxon
Alla, Abdelilah
García Martín, María de Gracia
Galbis Pérez, Juan Antonio
Muñoz Guerra, Sebastián
Departamento: Universidad de Sevilla. Departamento de Química Orgánica y Farmacéutica
Fecha: 2014
Publicado en: Polymer Chemistry, 5 (9), 3190-3202.
Tipo de documento: Artículo
Resumen: Two series of bio-based PBT copolyesters were obtained by polycondensation in the melt of 2,4:3,5-di-O- methylene-D-glucitol (Glux-diol) or dimethyl 2,4:3,5-di-O-methylene-D-glucarate (Glux-diester) with 1,4-butanediol and dimethyl terephthalate. The glucose-based bicyclic compounds used as comonomers were synthesized from commercially available 1,5-D-gluconolactone. The prepared PBT copolyesters had weight-average molecular weights in the 30 000–50 000 range; they had a random microstructure, and they were stable above 300 o C. The copolyesters containing less than 30% of sugar- based units were semicrystalline and were found to adopt the triclinic structure of PBT. These copolyesters with low contents in Glux were able to crystallize from the melt but at lower rates than PBT. The Tg value of PBT steadily increased with the incorporation of Glux units in the polyester chain with an increasing ratio of rv1.7 o C or rv1 o C per %Glux point, depending on which unit, the diol or the dia...
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Cita: Japu, C., Martínez de Ilarduya, A., Alla, A., García Martín, M.d.G., Galbis Pérez, J.A. y Muñoz Guerra, S. (2014). Bio-based PBT copolyesters derived from d-glucose: Influence of composition on properties. Polymer Chemistry, 5 (9), 3190-3202.
Tamaño: 1.060Mb
Formato: PDF

URI: http://hdl.handle.net/11441/42088

DOI: http://dx.doi.org/10.1039/c3py01425h

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