Solid-liquid adhesion of oxidized polyethylene films. Effect of temperature on polar forces

• Published in: Journal of colloid and interface science Vol. 59; no. 3; pp. 516 - 524
• Main Authors: Baszkin, A, Nishino, M, Ter-Minassian-Saraga, L
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.01.1977
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/0021-9797(77)90047-9

The nonpolar polyethylene is transformed by oxidation into a superficially polar polyethylene with a known surface density of carbonyl groups. The dispersion and polar contributions to the free energy of adhesion for the systems oxidized and unoxidized polyethylene with n-octane, water, and methylene iodide are calculated. The variation of γ s d, γ s p, and γ sl with temperature is found to verify the geometric mean equation for the interfacial free energy γ sl = γ s + γ l − 2 (γ s d γ l d ) 1 2 − 2(γ s p γ l p ) 1 2 . The results are analyzed and the importance of the dispersion and polar interactions and their dependence on temperature is discussed.