Synthesis of aromatic–aliphatic polyesters by enzymatic ring opening polymerization of cyclic oligoesters and their cyclodepolymerization for a circular economy
Cyclic oligomers of hexamethylene furanoate and hexamethylene terephthalate were obtained from 1,6-hexanediol and the corresponding methyl esters using Candida antarctica lipase B (CALB) enzyme catalyst. HPLC, MALDI-TOF MS, and NMR analyses showed that mixtures composed from cyclic dimer up to hepta...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/130296 |
| Acceso en línea: | https://hdl.handle.net/2117/130296 https://dx.doi.org/10.1021/acsapm.8b00265 |
| Access Level: | acceso abierto |
| Palabra clave: | Circular economy Polymerization Polyesters Aromatic-aliphatic polyesters cyclic oligoesters entropically driven ROP enzymatic cyclization enzymatic cyclodepolimerization enzymatic polymerization furanoate polyesters terephthalate polyesters Polimerització Polièsters Economia circular Àrees temàtiques de la UPC::Enginyeria química |
| Sumario: | Cyclic oligomers of hexamethylene furanoate and hexamethylene terephthalate were obtained from 1,6-hexanediol and the corresponding methyl esters using Candida antarctica lipase B (CALB) enzyme catalyst. HPLC, MALDI-TOF MS, and NMR analyses showed that mixtures composed from cyclic dimer up to heptamer were obtained almost quantitatively. Subsequently, these cycles were polymerized by ring opening polymerization (ROP) mediated by CALB to obtain semicrystalline polymers. In addition, we demonstrated that the polymers obtained from the ROP process could be transformed into cyclic oligomers in high yields using enzymatic cyclodepolymerization, thereby recycling the polymer in a circular biosynthetic path. |
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