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Glycol chitin (GC) hydrogel for vaginal application. (a) GC Tgel, at pH 4.2 decreased by increasing polymer concentration, and (b) environmental pH in case of 5 wt % GC. (c) 5% GC retained mucoadhesive properties detected by a positive value of the interaction parameter ΔG and a G ′mix > G ′GC.
