Abstract
The electrospun nanofiber-based orally dissolving webs are promising candidates for rapid drug release, which is due to the high surface area to volume ratio of the fibers and the high amorphization efficacy of the fiber formation process. Although the latter is responsible for the physical and/or chemical instability of these systems. The primary aim of the present study was to elucidate how the addition of polysorbate 80 (PS80) and hydroxypropyl-β-cyclodextrin (HP-β-CD) influenced the electrospinning process, the properties, and the behavior of the obtained nanofibers. In order to reveal any subtle changes attributable to the applied excipients, the prepared samples were subjected to several state of the art imaging and solid state characterization techniques at both macroscopic and microscopic levels. Atomic force microscopy (AFM) revealed the viscoelastic nature of the fibrous samples. At relatively low forces mostly elastic deformation was observed, while at higher loads plasticity predominated. The use of polysorbate led to about two times stiffer, less plastic fibers than the addition of cyclodextrin. The 1H-13C nuclear magnetic resonance (NMR) cross-polarization build-up curves pointed out that cyclodextrin acts as an i...Continue Reading
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Apr 17, 2019·Pharmaceutics·Silvia PisaniBice Conti
Jan 9, 2020·Pharmaceutical Research·Xin-Yi TeohSiok-Yee Chan
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