Distribution of polylactide and gelatin in single electrospun nanofibers studied by Raman spectroscopy

We used Raman spectroscopy to assess the distribution of polylactide (PLA) and gelatin in electrospun nanofibers made of a PLA-gelatin mixture in a common solvent. We identified several characteristic peaks in the reference Raman spectra of PLA and gelatin. All these peaks were present in the spectra obtained from the PLA-gelatin blend nanofibers indicating PLA and gelatin form a mixture in a single nanofiber.