Research Article
Functionalization of 3D Polylactic Acid Sponge Using Atmospheric Pressure Cold Plasma
Figure 6
DR-FTIR spectra in the range 3700–1600 cm−1 of (a) spectra of sample in vacuum; (b) spectra of sample in vacuum after the interaction with NH3(g). (a, b) Spectra of samples functionalized with –COOH by continuous plasma (front and back, respectively). (c, d) Samples functionalized with –COOH by pulsed plasma (front and back, respectively).
| (a) |
| (b) |
| (c) |
| (d) |