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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1895| Microwave-assisted synthesis of the lipase-catalyzed ring-opening copolymerization of ε-caprolactone and ω-pentadecanolactone: Thermal and FTIR characterization | |
| WILBERTH ANTONIO HERRERA KAO Manuel de Jesús Aguilar Vega JOSE MANUEL CERVANTES UC | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| 10.1515/epoly-2020-0067 | |
| 10.1515/epoly-2020-0067 | |
| MICROWAVE-ASSISTED SYNTHESIS LIPASE-CATALYZED RING-OPENING POLYMERIZATION COPOLYESTERS ω-PENTADECANOLACTONE ε-CAPROLACTONE | |
| 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). | |
| 2020 | |
| Artículo | |
| e-Polymers, 20(1), 651-658, 2020. | |
| Inglés | |
| Herrera-Kao, W. A., Aguilar-Vega, M. J., & 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. | |
| PROPIEDADES DE LOS MATERIALES | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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