Ebook: Apparent and Microscopic Contact Angles

This book chronicles the proceedings of the International Symposium on Apparent and Microscopic Contact Angles, held in conjunction with the American Chemical Society meeting in Boston, August 24-27, 1998. The book is divided into four parts: Nanoscopic and Molecular Effects on Contact Angles; Surface Forces and Surface Free Energy; Wetting of Heterogeneous, Rough and Curved Surfaces; Dynamic Effects in Contact Angle Measurements. Among the topics covered are: contact line tension measurement; liquid drop surface topography; molecular mechanisms of hydrophobic transitions; stereochemical and conformational aspects of polymer surfaces; determination of acid-base properties of metal oxides and polymers by contact angle measurement; van Oss--Good theory of acid-base surface free energies; AFM measurement of forces; thin liquid films; wettability of flat and curved surfaces; contact angle hysteresis; factors affecting contact angle meassurements; dynamic wetting behavior; and effect of surfactants on wetting.
Content:
• Front Matter
• Preface
• Table of Contents
•Part I. Nanoscopic and Molecular Effects on Contact Angles 1. Measurement of Contact Line Tension by Analysis of the Three-Phase Boundary with Nanometer Resolution
2. Nanometer Resolution of Liquid Surface Topography by Scanning Force Microscopy
3. Instability of the Three-Phase Contact Region and Its Effect on Contact Angle Relaxation
4. Molecular Mechanisms of Hydrophobic Transitions
5. Wetting of SiO2 Surfaces by Phospholipid Dispersions
6. Wettability and Microstructure of Polymer Surfaces: Stereochemical and Conformational Aspects
7. Contact Angles on Quartz Induced by Adsorption of Heteropolar Hydrocarbons
•Part II. Surface Forces and Surface Free Energy 8. Determination of the Acid–Base Properties of Metal Oxide Films and of Polymers by Contact Angle Measurements
9. Acid–Base Surface Free Energies of Solids and the Definition of Scales in the Good–van Oss–Chaudhury Theory
10. The Gap between the Measured and Calculated Liquid – Liquid Interfacial Tensions Derived from Contact Angles
11. Effect of an External Radiofrequency Electric Field on the Surface Free Energy Components of Calcium Carbonate in the Presence of Cationic and Anionic Surfactants
12. AFM Measurements of Hydrophobic Forces Between a Polyethylene Sphere and Silanated Silica Plates — the Significance of Surface Roughness
13. Self-Organization in Unstable Thin Liquid Films: Dynamics and Patterns in Systems Displaying a Secondary Minimum
•Part III. Wetting of Heterogeneous, Rough and Curved Surfaces 14. Underwater Captive Bubble Technique on Curved Surfaces of Blended Polydimethylsiloxanes
15. Thermodynamic Equilibrium and Stability of Liquid Films and Droplets on Fibers
16. Estimation of Contact Angles on Fibers
17. Evolution of Surface Chemistry and Physical Properties During Thin Film Polymerization of Thermotropic Liquid Crystalline Polymers
18. The Combined Effect of Roughness and Heterogeneity on Contact Angles: the Case of Polymer Coating for Stone Protection
19. Microsphere Tensiometry to Measure Advancing and Receding Contact Angles on Individual Particles
20. Wettability of Fine Solids Extracted from Bitumen Froth
21. Modification of Calcium Carbonate Surface Properties: Macroscopic and Microscopic Investigations
22. Factors Influencing Contact Angle Measurements on Wood Particles by Column Wicking
23. A New Model to Determine Contact Angles on Swelling Polymer Particles by the Column Wicking Method
•Part IV. Dynamic Effects in Contact Angle Measurement 24. Determination of the Peripheral Contact Angle of Sessile Drops on Solids from the Rate of Evaporation
25. Analysis of Evaporating Droplets Using Ellipsoidal Cap Geometry
26. Surfactant-Induced Wetting Singularities in Confined Solid–Liquid–Liquid Systems: Kinetic and Dynamic Aspects
27. An Acoustic Technique for the Monitoring of Dynamic Wetting Behavior
28. Dynamic Contact Angle Explanation of Flow Rate-Dependent Saturation–Pressure Relationships During Transient Liquid Flow in Unsaturated Porous Media
• Subject Index
• Author Index