$\alpha$	Deformation of the system (Statistical Mechanics)
F	Deformation Tensor
$\rho$	Density
∇	Divergence operator
S	Entropy
T	First Piola–Kirchhoff stress tensor
$\chi$	Flory–Huggins Parameter
Q	Fluid Flux
$\rho$	fluid specific mass
G	Gibbs Free Energy
F	Helmholtz Free Energy
I	Identity Tensor
U	Internal Energy associated with Enthalpy
J	Determinant of the deformation tensor (Volume change)
Q	Lagrangian vector
$\lambda$	Principal stretch
$\chi$	Mixture theory mapping function
M	Mass
G	Moduli
$\overline{\mu }$	Molar chemical potential
$\overline{V}$	Molar Volume
${\mu }_{el}$	Number of elastic junctions
z	Number of lattice connections
N	Number of molecules
$\Pi$	Osmotic pressure
k	Permeability
p (subscript)	polymer
p	pore pressure
r	Radius
r	repeat units
C	right Cauchy–Green strain tensor
S	second Piola–Kirchhoff stress tensor
s (subscript)	solvent
$\sigma$	Stress
T	Temperature
R	Universal Gas Constant
V	Volume
$\varphi$	Volume Fraction