Research trend on reaction principle and water absorption mechanism of polyacrylic acid superabsorbent polymers

In this review,the reaction principle and some synthetic methods of SAPs are briefly elucidated,and the polymer structure theory,thermodynamics of the solution,gel swelling mechanism and kinetics of water absorption were investigated based on polyacrylic acid to elaborate water absorption mechanism.The research trend and application prospect of polyacrylic acid superabsorbent polymers are also involved in the application aspect.