Surface tension, interfacial tension |
| ,![$ {\sigma }$](img6.png) |
Surface tension of phase in contact with equilibrium vapour or a dilute gas phase |
|
,
![$ {\sigma}^{\alpha}$](img142.png) |
Interfacial tension between phases and ![$ {\beta}$](img30.png) |
|
,
![$ {\sigma}^{{\alpha}{\beta}}$](img140.png) |
Dynamic surface (or interfacial) tension |
|
,
![$ {\sigma}^{\text{dyn}}$](img144.png) |
Static surface (or interfacial) tension |
|
,
![$ {\sigma}^{\text{st}}$](img146.png) |
Surface tension of clean surface |
|
,
![$ {\sigma}^0$](img420.png) |
Work of adhesion per unit area (between phases and , that
were previously in contact with phase )
(
) |
|
,
,![$ w_A$](img500.png) |
Work of separation per unit area |
|
![$ {\equiv}w_A^{{\alpha}{\beta}{\delta}}$](img501.png) |
Work of cohesion of pure substance per unit area
(
) |
|
![$ w_C^{\alpha}$](img503.png) |
Spreading tension of phase on phase , both previously in contact with phase
(
) |
|
,
![$ {\sigma}^{{\alpha}{\beta}}$](img140.png) |
Work of spreading per unit area
(
) |
|
![$ w_{\text{spr}}$](img156.png) |
Initial spreading tension |
|
,
,
![$ {\sigma}_i$](img508.png) |
Final spreading tension |
|
,
,
![$ {\sigma}_f$](img354.png) |
Surface (or interfacial) pressure
(
) |
| ,![$ {\pi}$](img159.png) |
Contact angle |
| ![$ {\theta}$](img19.png) |
Advancing contact angle |
|
![$ {\theta}_a$](img163.png) |
Receding contact angle |
|
![$ {\theta}_r$](img164.png) |
Equilibrium contact angle |
|
![$ {\theta}_e$](img165.png) |
Work of immersional wetting per unit area (= wetting tension)
(
) |
|
,
,![$ w_w$](img515.png) |
Surface (excess) shear viscosity |
|
![$ {\eta}^{\sigma}$](img169.png) |
Surface (excess) fluidity
(
) |
|
![$ {\varphi}^{\sigma}$](img170.png) |
Surface excess energy (referred to Gibbs surface) |
|
![$ U^{\sigma}$](img171.png) |
Surface excess energy per unit area
(
) |
|
![$ u^{\sigma}$](img518.png) |
Surface excess entropy (and per unit area) |
|
![$ \left(s^{\sigma}\right)$](img519.png) |
Surface excess Helmholtz energy (and per unit area) |
|
![$ \left(a^{\sigma}\right)$](img520.png) |
Surface excess enthalpy
(
) (and per unit area) |
|
![$ \left(h^{\sigma}\right)$](img522.png) |
Surface excess Gibbs energy
(
)
(and per unit area) |
|
![$ \left(g^{\sigma}\right)$](img524.png) |
Relative (excess) surface energy (with respect to component 1) |
|
![$ U^{{\sigma}(1)}$](img525.png) |
Reduced (excess) surface energy |
|
![$ U^{{\sigma}(n)}$](img526.png) |
Relative (excess) surface entropy, Helmholtz energy, enthalpy, Gibbs energy |
|
,
,
,
![$ G^{{\sigma}(1)}$](img202.png) |
Reduced (excess) surface entropy, Helmholtz energy, enthalpy, Gibbs energy |
|
,
,
,
![$ G^{{\sigma}(n)}$](img208.png) |
Interfacial energy (of interfacial layer) |
| ![$ U^s$](img209.png) |
Interfacial energy per unit area ( ) |
| ![$ u^s$](img528.png) |
Interfacial entropy (and per unit area) |
| ( ) |
Interfacial Helmholtz energy (or interfacial free energy) (and per unit area) |
| ( ) |
Interfacial enthalpy ( -enthalpy) (
) |
|
|
Interfacial enthalpy (
-enthalpy) |
| ( ) |
(
) (and per unit area) |
| |
Interfacial enthalpy (
-enthalpy) |
| ( ) |
(
) (and per unit area) |
| |
Interfacial Gibbs energy ( -Gibbs energy) |
|
|
(
) |
| |
Interfacial Gibbs energy (
-Gibbs energy) |
| ( ) |
(
) (and per unit area) |
| |
Interfacial Gibbs energy (
-Gibbs energy) |
| ( ) |
(
) (and per unit area) |
| |
Surface chemical potential, relating to Gibbs surface |
|
![$ {\mu}_i^{\sigma}$](img546.png) |
Surface chemical potential, relating to interfacial layer |
| ![$ {\mu}_i^s$](img547.png) |
Differential molar energy of adsorption |
|
![$ {\Delta}_a U_i^{\sigma}$](img548.png) |
(
) |
| |
Differential molar energy of adsorption |
|
![$ {\Delta}_a U_i^s$](img550.png) |
(
) |
| |
Differential molar enthalpy of adsorption (or isosteric enthalpy of adsorption) |
|
,
![$ q^{\text{st,}{\sigma}}$](img553.png) |
(
) |
| |
Differential molar enthalpy of adsorption (or isosteric enthalpy of adsorption) |
|
,
![$ q^{\text{st,}s}$](img556.png) |
(
) |
| |
Molar integral energy of adsorption
|
|
![$ {\Delta}_a U_m^{\sigma}$](img559.png) |
Molar integral enthalpy of adsorption
|
|
![$ {\Delta}_a H_m^{\sigma}$](img561.png) |
Standard Gibbs energy of adsorption (
) |
|
![$ {\Delta}_a {\mu}_i^{\ominus}$](img563.png) |
Standard differential molar entropy of adsorption |
|
![$ {\Delta}_a S_i^{\ominus}$](img564.png) |
![$ [=\frac{1}{T}({\Delta}_aH_i^{\ominus}-{\Delta}_a{\mu}_i^{\ominus})]$](img565.png) |
| |
Standard integral molar entropy of adsorption
|
|
![$ {\Delta}_a S_m^{\ominus}$](img567.png) |
Standard differential molar enthalpy of adsorption |
|
![$ {\Delta}_a H_i^{\ominus}$](img568.png) |
Enthalpy of wetting or enthalpy of immersion |
|
,
,![$ -Q_w$](img315.png) |
Enthalpy of wetting per unit mass of the solid |
| ![$ -q_w$](img316.png) |