title: Electrospun zein nanofibers incorporating cyclodextrins.
abstract: Zein nanofibers containing cyclodextrins (zein/CD) were produced via electrospinning. Three types of CDs (α-CD, β-CD and γ-CD) having 10%, 25% and 50% (w/w) were individually incorporated into zein nanofibers. SEM imaging elucidated that the morphologies of the electrospun zein/CD nanofibers depended on the CD type and weight percentage. The incorporation of CDs in zein improved the electrospinnability and bead-free nanofibers were obtained at lower zein concentrations. Zein/CD nanofibers having fiber diameters ∼100-400 nm were obtained depending on the zein concentrations, types and weight percentages of CD. XRD studies revealed that CDs were mostly distributed without forming crystalline aggregates for zein/CD nanofibers containing lower weight percentage of CDs. The surface analyses of zein/CD nanofibers by ATR-FTIR and XPS indicated that some of the CDs were present on the fiber surface. Thermal analyses showed that zein/β-CD nanofibers have shown higher glass transition temperatures and higher degradation temperature with increasing CD content.
authors.affiliation: UNAM-Institute of Materials Science & Nanotechnology, Bilkent University, Ankara, 06800, Turkey.
authors.forename: Fatma
authors.initials: F
authors.lastname: Kayaci
authors.forename: Tamer
authors.initials: T
authors.lastname: Uyar
mesh_terms: D003505:Cyclodextrins / Q000138:chemical synthesis*; D055664:Electrochemical Techniques / Q000379:methods*; D057139:Nanofibers / Q000737:chemistry*; D014961:X-Ray Diffraction / Q000379:methods; D015028:Zein / Q000138:chemical synthesis*
chemical_list: D003505:Cyclodextrins; D015028:Zein