Blends With a Large Surface Energy Difference Afs

Blends With a Large Surface Energy Difference Afs 

Finally, the Cahn construction analysis (see Sect. 3.1.1) performed for all segregation isotherms, yielded the bare surface energy derivative (—dfs/dc]))s evaluated at different surface concentrations s for all four studied temperatures (data sets corresponding to different temperatures are marked by different sym- 

The final implication of the temperature variation of (-dfs/d( ))s concerns the nature of the surface phase diagram and the location of the wetting transition point Tw For further discussion we use the Cahn construction drawn in Fig. 20b for the highest (T=184 °C) and lowest (T=99 °C) studied temperature. While the 

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