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Contact angles of water (θW) and diiodomethane (θD) on films made of PLA, Mg particles and CTAB for non-degraded and degraded samples for 1 and 3 months. (a) Non-containing magnesium films; (b) magnesium-containing films. The texture of θD is included to differentiate more clearly between cases in which θD > θW. All data are given as mean and standard deviation.
