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Before hydrogel formation (a). After hydrogel formation (b). Temperature (T) sweep experiment at t = 25–65 °C of C-OSSPG0.2/BP hydrogel (c). FT-IR spectra of PVA, borax, BP and C-OSSPG0.2/BP hydrogel (d). The SEM image of BP and C-OSSPG0.2/BP (e). The relevant physical properties of the C-OSSPG0.2/BP hydrogel (f).
