4.2. Surface morphology of the AgNP-loaded nanofibrous hybrid yarn
The SEM images of electrospun nanofibers of the yarn body without/with 30% AgNPs are presented in Fig. 2. It is clear that the electrospun nanofibers without AgNPs are uniform and bead free and have a cylindrical shape and smooth surface (Fig. 2-a). In contrast, as it can be seen in Fig. 2-b, the presence of AgNPs with average size of 83 nm was formed in the PVA nanofibers and leads to create areas with the rough surface in the yarn structure. Since, in the PLLA/PVA/AgNO3 hybrid yarn structure, the PLLA nanofibers which weren't loaded with AgNPs have a smooth and uniform surface as same as unloaded PLLA/PVA hybrid samples.