Título

Microwave-assisted synthesis of the lipase-catalyzed ring-opening copolymerization of ε-caprolactone and ω-pentadecanolactone: Thermal and FTIR characterization

Autor

WILBERTH ANTONIO HERRERA KAO

Manuel de Jesús Aguilar Vega

JOSE MANUEL CERVANTES UC

Nivel de Acceso

Acceso Abierto

Identificador alterno

doi: 10.1515/epoly-2020-0067

Referencia de datos

datasetDOI/10.1515/epoly-2020-0067

Resumen o descripción

Microwave-assisted synthesis of the lipase-catalyzed ring opening polymerization of ε-caprolactone (ε-CL) and ω-pentadecanolactone (ω-PDL) monomers was studied. A series of P(CL-co-PDL), with different molar feed ratios, including (ε-CL/ω-PDL) 100/0, 75/25, 50/50, 25/75, and 0/100, were synthesized. The resulting polyesters were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The microwave-assisted polymerization of the monomers reached high conversions (91–95%) within 60 min. FTIR spectra showed the typical absorption bands of these polyesters. A very intense band in the carbonyl region, which was shifted from 1,720 cm−1 for PCL to 1,732 cm−1 for PPDL homopolymer, as well as peaks owing to methylene groups in the 2,990–2,850 cm−1 range. DSC results revealed that all polyester samples were semi-crystalline. Interestingly, the copolymers exhibited only one melting peak (Tm), and their Tm values linearly increased from 57°C to 95°C as PPDL concentration was increased. Thermal stability of polyesters also depended on PDL content; an increase in PDL concentration increases polymer degradation temperature (Td).

Fecha de publicación

2020

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Formato

application/pdf

Fuente

e-Polymers, 20(1), 651-658, 2020.

Idioma

Inglés

Relación

&

Cervantes-Uc, J. M. (2020). Microwave-assisted synthesis of the lipase-catalyzed ring-opening copolymerization of ε-caprolactone and ω-pentadecanolactone: Thermal and FTIR characterization. e-Polymers, 20(1), 651-658.

Sugerencia de citación

Herrera-Kao, W. A., Aguilar-Vega, M. J.,

Repositorio Orígen

Repositorio Institucional CICY

Descargas

162

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