Dresden 2026 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 41: Biopolymers, Biomaterials and Bioinspired Functional Materials II (joint session CPP/BP)
CPP 41.3: Vortrag
Mittwoch, 11. März 2026, 17:30–17:45, ZEU/0255
Nanoscale characterization of piezoelectric nanofibers blended with Salmon Gelatin — •Martín Chavarría-Vidal1, Dragica Bezjak2, María Saavedra-Fredes1, Benjamín Schleyer-Thiers1, Ilka Hermes3, and Tomás P. Corrales1 — 1Universidad Técnica Federico Santa María, Valparaíso, Chile — 2Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany — 3Leibniz Institute of Polymer Research, Dresden, Germany
We electrospin salmon gelatin (SG) mixed in a polyvinyl alcohol (PVA) matrix containing chitosan (Ch). Furthermore, we used a coaxial electrospinning approach to blend these nanofibers together with polyvinylidene fluoride (PVDF). Such biomaterials could lead to the potential development of biocompatible and piezoelectric heart patches. After electrospinning our polymers, we observe by SEM two size distributions. Mechanical characterization of the large nanofibers obtained by AFM reveals two Youngs moduli peaks, centered at 1.77 GPa and 209 MPa. Small nanofibers also show a two component mechanical moduli distribution with peaks at 565 MPa and 1.33 GPa (10.1016/j.bbadva.2025.100168). EDS shows that both distributions contain Fluor. However, complimentary PFM measurements indicate that large nanofibers have a piezoelectric response comparable to pure electrospun PVDF, while the small ones do not exhibit such response. These measurements lead us to believe that the large nanofibers are mainly β-phase PVDF, while the smaller ones are composed of PVA/SG/Ch with α-phase PVDF (10.1177/15589250221125437).
Keywords: Biomaterials; Piezoelectric polymers; Atomic Force Microscopy