Direct Measurement of Energy Barriers on Rough and Heterogeneous Solid Surfaces
The "three-liquid" contact angle approach to the surface free energy components of solids was applied to poly (vinyl fluoride), rough and flattened, with and without flame treatment. Lifshitz-van der Waals (LW), γ LW SL , and acid-base (AB), γ LW SL , components were determined and used to...
Gespeichert in:
Veröffentlicht in: | The Journal of adhesion 1997-06, Vol.63 (1-3), p.141-157 |
---|---|
Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The "three-liquid" contact angle approach to the surface free energy components of solids was applied to poly (vinyl fluoride), rough and flattened, with and without flame treatment. Lifshitz-van der Waals (LW), γ
LW
SL
, and acid-base (AB), γ
LW
SL
, components were determined and used to calculate −δG
SL
(W
adhesion
SL
) for the formation of interfaces of five liquids with polymer. The automated goniometer allowed the determination of the energy barriers, −δ G*
SL
as the advancing liquid moved from pinned configuration to a metastable one. The acid-base component of the barriers was much greater than the LW, and the magnitude of the barriers was only slightly reduced by flattening. |
---|---|
ISSN: | 0021-8464 1545-5823 1563-518X |
DOI: | 10.1080/00218469708015218 |