Figure 3.
ATR-FTIR spectra of KP, KP-pVAc, KP-pVAc+CH, KP-pVAc+HPC, KP-pVAc+Cbp, and KP-p(VAc-co-DMAEMC).
Abbreviations: ATR-FTIR, attenuated total reflectance-Fourier transform infrared spectroscopy; Cbp, carbomer; CH, chitosan; DMAEMC, 2-(dimethylamino) ethyl methacrylate; HPC, hydroxypropyl cellulose; KP, ketoprofen; VAc, vinyl acetate.