Development of methods for surface free energy determination using contact angles of liquids on solids

Cohesive Hamaker Constants and Dispersive Surface Energies of RDX, PETN, TNT, and Ammonium Nitrate‐Based Explosives

“…First, the assumptiont hat g can be split into ad ispersive component and other components and that these components are additive may not be valid [27,28].S econdly,F owkes' theory including polar contributions to g is thermodynamically inconsistent, in thati th as three degrees of freedom, whereasi ts hould only have two [27].T his inconsistency can be eliminatedw hen ad ispersive-onlyl iquidi nteracts with ad ispersive-only solid [27]. Additionally,o nly the dispersion interactions of the vdW forces can be reasonably predicted using ag eometric mean [5,28].W hen Keesom and Debye interactions substantially contributet ot he vdW force,t he use of the geometric mean is questionable [28,29].I fh ydrogen bonding effects are not eliminated in the measurement of g S D these effects can introduce significant error into the Hamaker constant prediction [ 1,29].F inally,I GC is extremely sensitive to the a parameter. Changing this valueb y2 0% can changet he resulting g S D by 56 % [ 11].…”

Characterization of Several Polymer Surfaces by Streaming Potential and Wetting Measurements: Some Reflections on Acid–Base Interactions

“…The final equations to calculate the solid surface tensions are listed in Table 2. The complete theoretical background of these theories, the advantages and drawbacks as well as substantial critics, can be found in the recent literature (15)(16)(17)(18)(19)(20). Another empirical method to estimate the critical surface tension ␥ c was developed by Zisman (21,22).…”

Conditioning Film-Induced Modification of Substratum Physicochemistry—Analysis by Contact Angles

“…The g BS was calculated with an equation whose notation was g / S component of surface free energy was absent on both analogous to Eq. [9] but with the subscript L replaced by polymers. The solid-water interfacial tension was negative B.…”