X-ray photoelectron spectroscopy (XPS) was used to analyze the surface chemistry of the coated BNC grafts [39 (link)]. Therefore, rectangular samples (0.5 × 0.5 cm) were cut from coated BNC grafts and freeze dried. Then, the samples were analyzed by XPS using a PHI 5600 ESCA System (Physical Electronics Inc., Division of ULVAC-PHI, 18,725 Lake Drive East in Chanhassen, MN 55317, USA), equipped with a Spherical Capacitor electron energy Analyzer (energy resolution 25 meV, PHI 5600 ESCA System) and a Dual Anode X-ray Source operating with Mg K-alpha at 14 kV and 400 W. The analyzed lateral area had a diameter of 800 µm, using a detection angle (Source to SCA) of 54°. To define the atomic concentration of the analyzed elements, multiplex spectra were measured for each sample.
Wacker M., Riedel J., Walles H., Scherner M., Awad G., Varghese S., Schürlein S., Garke B., Veluswamy P., Wippermann J, & Hülsmann J. (2021). Comparative Evaluation on Impacts of Fibronectin, Heparin–Chitosan, and Albumin Coating of Bacterial Nanocellulose Small-Diameter Vascular Grafts on Endothelialization In Vitro. Nanomaterials, 11(8), 1952.
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