Enthalpic Contributions to Bare Surface Free Energy fs

Enthalpic Contributions to Bare Surface Free Energy fs [Pg.47]

The corresponding surface energy difference parameter xsn,mn may be expressed (see Eq. 35) in terms of the contact energies or the solubility param- [Pg.48]

The real surface (e.g., the substrate//mixture interface) may prefer one of the blend components. This is expressed by different contact interactions between surface (S) and both blend component (A, B) molecules Sa sb- The resulting surface energy fsH is [Pg.48]

The quadratic in (j)s form is preserved with gj - originating now mainly due to the difference in surface-polymer contact energies and g - entirely specified by missing neighbor effect. Both coefficients appearing in the linear form of the surface energy derivative (-dfs/d( ))s=p1+g( )s maybe expressed as [177] [Pg.48]

The surface concentration Q at which (-dfs/d ))s changes sign is related to the hypothetical interaction parameters between surface and blend component molecules ysx (X=A or B), defined similarly to FH interaction parameter % (Eq. 2) [Pg.48]

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