Some Remarks on the Components of the Liquid Surface Free Energy

On Neglecting the Polar Nature of Halogenated Hydrocarbons in the Surface Energy Determination of Polar Solids from Contact Angle Measurements

“…It should be noted that the only nonzero γ + L value for s-tetrabromoethane, which could be found in the literature, was 3.14 mJ/m 2 (37). This value appears too large; e.g., it is an order of magnitude greater than the well-established value of 0.72 mJ/m 2 for diiodomethane (16,31,32). Therefore, we first determined the surface free energy components and parameters of PMMA by the use of respective contact angle results for water, glycerol, and diiodomethane and then estimated the γ + L value of s-tetrabromoethane from the contact angle of this liquid on PMMA using Eq.…”

“…This paper describes a detailed experimental and simulation study of errors and discrepancies caused by this assumption. Occasional remarks about the inappropriateness of this assumption can be found in the literature (15,16), but reports specifically dealing with this subject are lacking.…”

Inverse Gas Chromatographic Examination of Polymer Composites

“…Thus, for the solid can be calculated: (5) is 19.2 mJ m -2 [14]. However, in the literature there are different values for test compound surface free energy components and parameters [15]. Van Oss gave of 6.2 mJ m -2 for EA, which differs from that in [16].…”

Analysis of the Wettability of Partially Fluorinated Polymers Reveals the Surprisingly Strong Acid-Base Character of Poly(vinylidene Fluoride)

“…Lifshitz-van der Waals (LW) forces: Using well-known lierature values of γ L LW for the contacting liquids (see Table 2) 42,43 and γ S LW of the fluorinated polymers calculated from the nonzero value of γL + = 0.72 mJ m -2 for methylene iodide and two polar liquids (γ L + = 25.5 and 3.92 mJ m -2 for water and glycerol, respectively), 44 we estimated the Lifshitz-van der Waals force (WSL …”