Abstract
Abstract Poly(methacrylic acid) hydrogels were synthesized. The effects of the synthesis parameters: the neutralization degree of methacrylic acid and the concentrations of monomer, crosslinker and initiator on the xerogels structural properties: the xerogel density ( ρ xg ), the number average molar mass between the network crosslinks ( M c ), the crosslink degree ( ρ c ), the number of elastically effective chains totally induced in a perfect network per unit volume ( V e ), the distance between the macromolecular chains ( ξ ) and the equilibrium swelling degree ( SD eq ) and the swelling kinetics was investigated. As the concentrations of crosslinker, monomer and initiator increase, the value of ρ xg , ρ c and V e increases and decreases the value of M c , ξ and SD eq . With the increase in the neutralization degree of methacrylic acid, the values of ρ xg , M c , ξ , SD eq increase, while the ρ c and V e decrease. The xerogels structural properties, SD eq and swelling kinetic parameters are mainly in power law form functional relationships with the synthesis parameters as well as with the xerogels crosslinking degree.
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