Symbol	Meaning	Units
$\eta$	Viscosity of solution	Pa·s
${\eta }_S$	Viscosity of solvent	Pa·s
$\varphi$	Volume fraction	-
$\left[\eta \right]$	Intrinsic viscosity	m3/kg
$c$	Mass concentration	kg/m3
$\langle R\rangle$	End-to-end distance	nm
$L_c$	Contour length	nm
$L_p$	Persistence length	nm
$N$	Number of repeating units	-
$l$	Monomer size	nm
$\langle R_g\rangle$	Radius of gyration	nm
$M$	Molar mass	kg or kg/mol
${\varphi }_{YF}$	Numerical function from Yamakawa—Fujii model	m3/2 or nm3/2
$M_w$	Weight-averaged molar mass	kg/mol
$L_p^{OSF}$	Electrostatic persistence length	nm
$L_p^{+}$	Persistence length of unscreened polymer chain	nm
$L_B$	Bjerrum length	nm
$f$	Fraction of charged monomers	-
$\kappa$	Inverse Debye length	nm−1
${\left[\eta \right]}_U$	Intrinsic viscosity of unscreened biopolymer	m3/kg
${\left[\eta \right]}_S$	Intrinsic viscosity of screened biopolymer	m3/kg
${\left[\eta \right]}_R$	Relative intrinsic viscosity	-
${\Theta }_P$	Expansion factor	-