Chemical and physical properties of poly (vinyl alcohol) hydrogel films formed by irradiation

Chemical and physical properties of poly(vinyl alcohol)(PVA) hydrogel films were investigated as a function of production factors.The experimental results show that the gel fraction dependsstrongly on the radiation dose, the degree of swelling is inverselydependent on the concentration of PVA solution, the tensile strengthdepends mainly on the PVA blending ratio and the elongation at breakis inversely dependent on the radiation dose.