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RESEARCH PRODUCT
Processing, structure, property relationships and release kinetics of electrospun PLA/Carvacrol membranes
Francesco LoprestiRoberto Scaffarosubject
Materials sciencePolymers and PlasticsKineticsGeneral Physics and Astronomy02 engineering and technology010402 general chemistry01 natural sciencesEssential oilchemistry.chemical_compoundPhysics and Astronomy (all)Polylactic acidUltimate tensile strengthMaterials ChemistryControlled releaseElastic moduluschemistry.chemical_classificationPolymers and PlasticElectrospinningOrganic ChemistryPolymer021001 nanoscience & nanotechnologyControlled releaseElectrospinning0104 chemical sciencesMembraneSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryChemical engineering0210 nano-technologydescription
Abstract In this work, polylactic acid (PLA) membranes at two different carvacrol (CRV) nominal concentration (i.e. 14 wt% and 28 wt%) were prepared via electrospinning technology. The membranes were characterized by scanning electron microscopy, ATR-FTIR and calorimetric measurements as well as tensile tests. Moreover, the release kinetics of CRV in phosphate buffered solution at 37 °C was monitored through UV–Vis measurements and the data were fitted with a power law model. Results indicated that the successful incorporation of CRV in the polymer matrix damaged the fibers morphology but increased all the mechanical parameters investigated (i.e. elastic modulus, tensile strength and elongation). The power law model highlighted that the mechanism of CRV release changed with time from an anomalous release in the first 6 h to a Fickian diffusion mechanism for both the PLA/CRV systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-03-01 |