Surface energy analysis of several organic polymers
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説明
Abstract The dispersion force component of surface tension γ S d and the nondispersive interaction energy at the water/solid interface (or the nondispersive work of adhesion) I SW n were evaluated for poly-(tetrafluoroethylene) (PTFE), poly(vinylchloride) (PVC) and poly(methylmethacrylate) (PMMA) by the analysis of the contact angles of water drops in hydrocarbon (the two-liquid-contact-angle method). The results were compared with those obtained by the one-liquid-contact-angle method with α -bromonaphthalene and methylene iodide as probe liquids, which is the method usually adopted. The values of γ S d from the two-liquid method were considerably larger than those from the one-liquid method, whereas their high sensitivity to error in the measurement of contact angles was taken into account. This discrepancy may be attributed to the neglect of the surface pressure π in the one-liquid method and the π values of the liquids used on the sample solids were calculated.
収録刊行物
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- Journal of Colloid and Interface Science
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Journal of Colloid and Interface Science 60 112-116, 1977-06-01
Elsevier BV