C	concentration of polymer in the solution
Cn	Flory’s characteristic ratio
E	Horseradish Peroxidase (HRP)
g	network correction factor
G	relaxation modulus (Pa)
G′	storage modulus (Pa)
Ge	equilibrium shear modulus treated by rubberlike elasticity theory (Pa)
Gx,m,a,c	largest polymer chain with x monomeric units, m residual phenol groups, a activated phenol groups and c crosslinks
k	Boltzmann’s constant (J/K)
kj	kinetic rate constant of “j” reaction
kj,MC	stochastic kinetic rate constant of “j” reaction
Mc	number average molecular weight between two crosslinks
Mi	molecular weight of the “ith” polymer chain
Mn,sol	number average molecular weight in the solution (g/mol)
Mw	weight average molecular weight in the system (g/mol)
MWm	molecular weight of a repeating structural unit
Mw,sol	weight average molecular weight in the solution (g/mol)
NA	Avogadro’s Number
NCLD	number chain length distribution
NE	the number of enzyme species E
NH2O2	total number of hydrogen peroxide species
NR	total number of polymer chains
Np	number of primary molecules before crosslinking
NRE	total number of reactions
rand1	randomly generated number uniformly distributed in the range of [0, 1]
rand2	randomly generated number uniformly distributed in the range of [0, 1]
$r_E^2$	mean square end-to-end distance of a strand
$\overline{r_0^2}$	mean square end-to-end distance of a non-constrained strand
Pi	probability of reaction “i”
R	the universal gas constant (J∙mol−1K−1)
Rj	the rate of the “j” chemical reaction
T	absolute temperature (K)
u2,r	polymer volume fraction at the relaxed state
u2,s	polymer volume fraction at the equilibrium swollen state
V	volume of the mixture
V 1	molar volume of the solvent
wg	gel mass fraction
xi	degree of polymerization of the “ith” polymer chain
Xc	total number of possible combinations of reactive species in a reaction
Greek Symbols
Δt	the time step between two reactions
ν	number of network chains or segments per unit volume (m−3)
vc	the number of moles of crosslinks per unit volume (mol∙m−3)
ve	number effective network chains or segments per unit volume (m−3)
vo	number of crosslinks per unit volume (m−3)
λ	backbone bond factor
ξ	mesh size of the network
ρ	polymer density (kg∙m−3)
χ 1	Flory interaction parameter of the polymer-solvent