Poly(vinyl alcohol): Physical Approaches to Designing Biomaterials for Biomedical Applications

Table 3

Equilibrium water uptake of the different hydrogel films prepared by one cycle freeze-thaw (1FT), air-dried and one cycle freeze-thaw (AD+1FT) and air dried (AD) (𝑛 = 3).

Crosslinking method	Hydrogel	EWC%
1FT	PVA10	73.52 ± 0.30
	PVA20	69.06 ± 0.30
	PVA30	66.72 ± 2.71
	75 PVA : 25 PVP	83.07 ± 1.02
	50 PVA : 50 PVP	85.22 ± 0.64
	80 PVA : 20 gelatin	82.19 ± 0.83
	60 PVA : 40 gelatin	80.44 ± 0.48
	40 PVA : 60 gelatin	79.08 ± 3.67
	20 PVA : 80 gelatin	85.39 ± 1.81
AD+1FT	PVA10	69.62 ± 4.46
	PVA20	60.71 ± 1.77
	PVA30	63.49 ± 1.44
AD	PVA10	65.63 ± 1.10
	PVA20	53.71 ± 2.56
	PVA30	56.93 ± 3.32
	80 PVA : 20 gelatin	76.90 ± 1.35
	60 PVA : 40 gelatin	75.72 ± 4.74
	40 PVA : 60 gelatin	74.72 ± 0.90
	20 PVA : 80 gelatin	78.40 ± 4.32