. 2018 Oct 8;4(4):81. doi: 10.3390/gels4040081

Table 1.

Hydrodynamic parameters of PVA in different solvents ^a).

Solvent	30 °C		15 °C		ΔQ^E_η	ΔQ^E_η/[η]
Solvent	[η]	k’	[η]	k’	ΔQ^E_η	ΔQ^E_η/[η]
Water	0.60 ± 0.03	2.0 ± 0.3	-	-	-	-
Water-3 M URE	0.79 ± 0.03	0.8 ± 0.1	-	-	-	-
DMSO	1.70 ± 0.10	0.4 ± 0.1	1.30 ± 0.10	1.1 ± 0.4	29.4 ± 0.9	17 ± 2
DMSO-3 M URE	1.36 ± 0.03	0.44 ± 0.05	0.98 ± 0.05	0.8 ± 0.2	26.0 ± 0.9	19 ± 1

^a) [η] is the intrinsic viscosity (dL/g); k’ is the Huggins constant; ΔQ^E_η = Q_η − Q_η₀ is the excess apparent activation heat of viscosity (kJ/mol); Q_η and Q_η₀ are the apparent activation heats of viscosity for the polymer solution and solvent, respectively.