Modified Chitosan-Clay Nanocomposite as a Drug Delivery System Intercalation and In Vitro Release of Ibuprofen

Figure 3

IR spectra in the region 4000–400 cm⁻¹ of (a). Na-MMT, CS, mod-CS, mod-CS/MMT (1 : 1), ibuprofen, mod-CS/MMT—ibuprofen on cold. (b) Na-MMT, CS, mod-CS, mod-CS/MMT (1 : 1), Ibuprofen, mod-CS/MMT—Ibuprofen on hot. (c). Ibuprofen, CS, CS/ibuprofen and after release at pH = 5.4 and 7.8.

(a)

(b)

(c)