Draft Syllabus – Matse 597
Wetting Properties Of Materials: Theory And Practice
I
INTRODUCTION
a) Course Objectives And Student Participation
i) Course Content Limitations – Emphasis On Water Wetting
ii) Web Resources, Reading, And Student Projects
iii) Evaluation Of Student Performance (Grading)
b) Manifestations Of Wetting In Nature – The Everyday Miracle
i) Bubbles, Beads, And Dribbles
ii) Capillarity
iii) Technological Importance Of Wetting In Materials Science And Commercial
Relevance
c) A Historical Perspective On The Wetting Problem
i) Capillarity Before Laplace
ii) Laplace And Young
iii) Gibbs And Van Der Waals
iv) Zisman And Beyond
v) Era Of Surface Engineering
II
a)
b)
c)
d)
SURFACES, INTERFACES, INTERPHASES
The Surface Region
i) Chemical Predicament Of Matter At The Periphery
ii) Energetic Predicament Of Matter At The Periphery
iii) Kinds Of Surfaces And Interfaces
Theories Of The Interface - Qualitative Aspects
i) Surfaces Of Discontinuity
(1) Implicit Assumptions Of Laplace And Young In The Days Of Phlogiston
(a) Laplace Solution To The Problem Of Capillarity
(b) The Young Equation
(2) Gibbsian Surface Thermodynamics
ii) A Region Of Continuously-Varying Component Densities
(1) Gradient Theory Of Van Der Waals
(2) Statistical Thermodynamics
iii) Surface Region As A Phase
(1) Guggenheim Treatment
Intermolecular Forces
i) Kinds, Magnitude, And Range
ii) Concept Of Molecular Pressure
Theories Of The Interface - Quantitative Aspects
i) Statistical Thermodynamics Of The Interface
ii) Gibbsian Surface Thermodynamics
iii) Guggenheim Treatment
Erwin Vogler – MatSE 597c
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III
TENSIOMETRY – MEASUREMENT OF CONTACT ANGLES
a) Liquid-Liquid And Liquid-Vapor Interface
i) Wilhelmy Balance
ii) Dunouy Ring
iii) Pendant Drop
iv) Drop Volume
b) Solid-Liquid Interface
i) The Phenomenon Of Contact Angle Hysteresis
ii) Goniometry
iii) Wilhelmy Balance
c) Real Data
i) Lab Tour And Hands-On Measurements
ii) Calculations And Interpretations
IV
THEORY OF CONTACT ANGLES AND WETTABILITY
a) Phenomenological Approaches
i) Zisman Critical Surface Tension
b) Interfacial Tension Component Theory
(1) Propagation Of Intermolecular Forces Across The Interface
(2) The Additivity Rule Of Interfacial Tension Components
(a) Fowkes Theory
(b) Combining Rules For Dispersion Forces
(i) Arithmetic Mean
(ii) Geometric Mean
(iii)Harmonic Mean
(c) Combining Rules For Acid-Base Interactions
(i) Lewis Acid-Base Interactions
(ii) Monopolar Components
1. Theory Of Good, Van Oss, Chaudhury (Gvoc)
c) Equation Of State Theory
i) Neumann Theory
V
WATER CHEMISTRY AND THE HYDROPHOBIC EFFECT
a) Self Association In Water
i) Historical Perspective
ii) Hydrogen Bonding
iii) Generalized Lewis Acid-Base
iv) Self Associated Network
b) Vicinal Water – The Idea That Won’t Go Away
i) Historical Perspective
ii) Experimental And Theoretical Evidence Or Lack Thereof
iii) Speculation On Vicinal Water Solvent Properties
iv) Relationship to Theories Of Water Wetting
c) The Hydrophobic Effect
i) Thermodynamics
(1) Entropic And Enthalpic Effects
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Erwin Vogler – MatSE 597c
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(2) Temperature Sensitivity
ii) Hydrophobic Hydration And Self Assembly
iii) Biological And Environmental Impact Of The Hydrophobic Effect
VI
AMPHILICITY AND SURFACTANCY
a) Physical Chemistry Of Adsorption
i) Physisorption
ii) Chemisorption
b) Amphilicity – A Solution-Phase Ambiguity
i) Molecular Structure And The Hydrophobic Effect
ii) Surfactants And Detergents
(1) Classes Of Synthetic Surfactants
(2) Biosurfactants
c) Adsorption To Liquid-Vapor Interfaces
i) Interfacial Energetics
ii) Concentration-Dependent Interfacial Tension
(1) Tensiometry
(2) Surface Thermodynamic Interpretation
iii) Kinetics
iv) Real Data
(1) Lab Tour And Hands-On Measurements
(2) Calculations And Interpretations
d) Adsorption To Solid-Liquid Interfaces
i) Interfacial Energetics
ii) Concentration-Dependent Interfacial Tension
(1) Tensiometry
(2) Surface Thermodynamic Interpretation
iii) Kinetics
iv) Real Data
(1) Lab Tour And Hands-On Measurements
(2) Calculations And Interpretations
2/6/2016