title: Poly(L-lactide)/branched β-cyclodextrin blends: Thermal, morphological and mechanical properties.
abstract: In this work we develop poly(L-lactide)/branched β-cyclodextrin (bβCD) blends in an attempt to obtain new biocompatible and biodegradable materials to be used in the emerging fields of pharmaceutical, biomedicine and food industry. Ionic branched β-cyclodextrin (bβCD) was obtained by polycondensation of the β-CD monomer and it was blended with a commercially available PLLA. Fourier transform infrared spectroscopy (FTIR) has been applied to study the occurring interactions between both partners. Thermal properties of blends have been analyzed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), while the phase structure of the blends was analyzed by scanning electron microscopy (SEM). Finally, dynamic mechanical analysis (DMA) has been used to provide further insights into the features controlling miscibility between PLLA and bβCD. Results show the presence of a single phase irrespectively of the blend composition. Overall, this work opens new perspectives for the development of naturally available materials with tunable functional properties for applications in which cyclodextrins emerge as a new class of promising candidates.
authors.affiliation: Macromolecular Chemistry Research Group, Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain. Electronic address: erlantz.liizundia@ehu.es.
authors.forename: E
authors.initials: E
authors.lastname: Lizundia
authors.affiliation: Macromolecular Chemistry Research Group, Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain. Electronic address: floresther_gomez001@ehu.es.
authors.forename: F
authors.initials: F
authors.lastname: Gómez-Galván
authors.affiliation: Macromolecular Chemistry Research Group, Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain; Basque Center for Materials, Applications and Nanostructures (BCMaterials), Parque Tecnológico de Bizkaia, Ed. 500, Derio 48160, Spain. Electronic address: leyre.perez@ehu.eus.
authors.forename: L
authors.initials: L
authors.lastname: Pérez-Álvarez
authors.affiliation: Macromolecular Chemistry Research Group, Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain; Basque Center for Materials, Applications and Nanostructures (BCMaterials), Parque Tecnológico de Bizkaia, Ed. 500, Derio 48160, Spain. Electronic address: luismanuel.leon@ehu.eus.
authors.forename: L M
authors.initials: LM
authors.lastname: León
authors.affiliation: Macromolecular Chemistry Research Group, Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain; Basque Center for Materials, Applications and Nanostructures (BCMaterials), Parque Tecnológico de Bizkaia, Ed. 500, Derio 48160, Spain. Electronic address: joseluis.vilas@ehu.eus.
authors.forename: J L
authors.initials: JL
authors.lastname: Vilas
mesh_terms: D002152:Calorimetry, Differential Scanning; D004811:Epichlorohydrin / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions; D055595:Mechanical Phenomena; D008855:Microscopy, Electron, Scanning; D011091:Polyesters / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D017550:Spectroscopy, Fourier Transform Infrared; D013237:Stereoisomerism; D013499:Surface Properties; D013696:Temperature; D047392:beta-Cyclodextrins / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D011091:Polyesters; D047392:beta-Cyclodextrins; D004811:Epichlorohydrin; C033616:poly(lactide)
keywords: Beta-cyclodextrin (PubChem CID: 444041); Branched β-cyclodextrin; Epichlorohydrin (PubChem CID: 7835); Glass transition temperature; Hydrochloric acid (PubChem CID: 313); L-lactic acid (PubChem CID: 107689); Miscibility; N,N-Dimethylformamide (PubChem CID: 6228); Poly(L-lactide); Polymer blend; Sodium hydroxide (PubChem CID: 14798); β-Cyclodextrin