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- W4313457281 abstract "The use of renewable monomers and green polymerization processes for preparing new synthetic polymers is a hot topic today. In this work we have obtained high molecular weight copolyesters derived from ω-pentadecalactone (PDL), dimethyl succinate (DMS) and 1,4-cyclohexanedimethanol (1,4-CHDM) by a combination of ring opening polymerization (ROP) and two step melt polycondensation processes. The reaction has been carried in bulk under mild conditions (80–120 °C) and catalyzed by immobilized Candida artarctica lipase B (N435 biocatalyst). These reactions were followed by 1H NMR and it was observed that although PDL reacted faster, at the end copolyesters displayed a random microstructure due to transesterification reactions taking place during polymerization. These copolyesters were thermally stable up to around 350 °C and semicrystalline for all compositions with melting temperatures decreasing with the increased content of the counterpart comonomer up to a pseudo-eutectic point located at 40 mol-% of PDL composition. The crystalline structure and transitions taken place by heating have been studied by WAXS and SAXS synchrotron X-ray diffraction. Copolyesters with elastomeric properties could be obtained at intermediate compositions." @default.
- W4313457281 created "2023-01-06" @default.
- W4313457281 creator A5014479852 @default.
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- W4313457281 date "2023-01-01" @default.
- W4313457281 modified "2023-09-24" @default.
- W4313457281 title "Elastomeric copolyesters of ω-pentadecalactone and cyclohexylenedimethylene succinate obtained by enzymatic polymerization" @default.
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- W4313457281 doi "https://doi.org/10.1016/j.polymer.2022.125624" @default.
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