Development of Modified-Release Diclofenac Sodium Capsules Using Blends of Pectin-Clay Multiparticulate Hybrid Systems as Release Retardants

Figure 1

FTIR spectrum of (a) talc powder, (b) diclofenac sodium, (c) bentonite, (d) pectin, (e) pectin, bentonite, and diclofenac combination (P/B/D), and (f) pectin, talc, and diclofenac combination (P/T/D). (g) Overlay comparison of the FTIR spectrum of diclofenac sodium; pectin, bentonite, and diclofenac combination (P/B/D); and pectin, talc, and diclofenac combination (P/T/D).

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