Theoretical and experimental study of the stiffness of electrospun composites of poly(vinyl alcohol), cellulose nanofibers, and nanohydroxy apatite

摘要: The present study aims to theoretically model and verify the mechanical behavior of electrospun fibers poly(vinyl alcohol) (PVA) reinforced by nanohydroxy apatite (nHAp) cellulose nanofibers (CNF), three composites designated as PVA/nHAp, PVA/CNF, PVA/nHAp/CNF. Tensile tests AFM nanoindentation studies were used measure tensile modulus scaffolds single respectively. Halpin–Tsai Ouali models applied predict stiffness mats. Theoretical analysis according showed that CNF have no preferred orientation in fibers, particularly at higher filler content. Additionally, this provided a better prediction than model, especially lower based on geometry an unit cell open-cell structure such honeycomb, tetrakaidecahedron cube simulate scaffolds. Among structural for porous scaffolds, honeycomb best prediction, model—a moderate one, was worst. In general, it proved both experiment theory mat caused significant reduction nanocomposites.