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. 2021 Oct 16;79:105800. doi: 10.1016/j.ultsonch.2021.105800

Fig. 3.

Fig. 3

ga) Water contact angle of SF films ultrasonically treated with different time from (I) 0 min to (Ⅱ) 30 mins at 600 W, and under different intensity from (III) 100 W to (IV) 800 W for 30 mins, respectively. Protease XIV enzymatic degradation profiles of (b) MSF, MSFP-100, MSFP-300, MSFP-500, MSFP-700 and MSFP-800, and (c) MSF, MSFT-1, MSFT-5, MSFT-15 and MSFT-30 film samples. (d) The mouse fibroblast cell (L929) viability after 0, 1, 3, 5 days, on the surfaces of MSF, MSFT-1, MSFT-30 and MSFP-100 and MSFP-800 samples using a glass surface as the control (** p < 0.01). The breathability of ultrasound treated SF films with (e) 0.4 mm, and (f) 0.8 mm thickness, measured at 25 ℃, 70 KPa pressure and nitrogen atmosphere.