Water sorption and diffusion, wettability and opacity results.

Water and methylene iodide contact angle (θ), solid surface free energy (Ys) with their components (dispersive and polar ), equilibrium water contents at 37°C (weq), apparent diffusion coefficient (D) at 37°C (assuming Fick’s law is obeyed) and opacity (O) values of the zinc alginate films with (A1GO and A2GO) and without (A1and A2) 1% w/w of graphene oxide and control samples of calcium alginate (C1 and C2). Data are shown as mean±standard deviation. * Different superscript letters in values of the same column indicate statistically significant differences (p