Fig. 2: Fluorine content and oil repellency of CF3 fletched PDMS brushes. | Nature Communications

Fig. 2: Fluorine content and oil repellency of CF3 fletched PDMS brushes.

From: Nanoscale fletching of liquid-like polydimethylsiloxane with single perfluorocarbons enables sustainable oil-repellency

Fig. 2

a The fluorine-to-siloxane atomic ratio F/SiO2C2 as a function of the plasma treatment time tp and estimated number of bonded CF3 fletching agents n. See Supplementary Information Supplementary Note 4 for a discussion on the uncertainty calculations. Data (N = 5) are presented as mean values ± 1 std. b The advancing and receding contact angles of hexadecane on the CF3 fletched PDMS brushes as a function of the plasma treatment time tp prior to CF3 fletching. Here N = 5 and the data is the mean ± 1 std. c The total surface energies for surfaces considered in this work, calculated using the OWRK method. d The absolute surface density of fluorine for the CF3 fletched PDMS brushes, C6 PFAS SAM and C4 PFAS surface measured via ToF-CIC.

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