| abstract |
The invention discloses a preparation method of polyvinyl alcohol hydrogel with adsorption capacity, which comprises the following steps: weighing 1-5 parts by weight of polyvinyl alcohol, adding into 8-15 parts by weight of water, adjusting the temperature to 90-98 ℃, and stirring in a constant-temperature water bath for 0.5-2 hours; adding glycerol and phytic acid, and stirring for reaction for 0.5-1.5 h; wherein the water: the weight ratio of the glycerol is 1-3: 1, the weight of the phytic acid is 1-3 times that of the polyvinyl alcohol; after the reaction, the mixture was poured out and molded. The hydrogel has strong adsorption capacity and conductivity, and the resistivity is 9.03 kOmega. |