Development and In-Vitro Evaluation of pH Responsive Polymeric Nano Hydrogel Carrier System for Gastro-Protective Delivery of Naproxen Sodium

Figure 5

(a) FTIR spectra of PEG. (b) FTIR spectra of methacrylic acid. (c) FTIR spectra of MBA. (d) FTIR spectra of PEG-p (MAA). (e) FTIR spectra of naproxen sodium. (f) FTIR spectra of drug loaded nanogels.

(a)

(b)

(c)

(d)

(e)

(f)