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The goal of work is study of polyacrylic acid hydrogel (gPAA) and poly-4-vinylpyridine hydrogel (gP4VP) remote interaction influence on their electrochemical and conformational properties. The dependences of the swelling coefficient, conductivity and pH of intergel systems aqueous solutions with different ratios polyacid:polybasis from times are considered. It is established that maximum conductivity is observed at ratios of gPAA:gP4VP 5:1, 3:3 and 1:5, while minimum conductivity is observed at ratios 4:2 and 2:4. Increasing of medium’s pH is observed at ratio 1:5. Swelling coefficient of polyacrylic acid hydrogel increases monotonically with increase of poly-4-vinylpyridine share in an aqueous medium. In dependence of swelling coefficient from ratios polyacid:polybasis conformational transition region of poly-4-vinylpyridine is detected in area 3:3-1:5. The obtained results can be explained by remote interaction of polyacrylic acid hydrogel with poly-4-vinylpyridine hydrogel, during which mutual activation of hydrogels occurs due to proton transfer from polyacid to polybasis.

journal of materials science and engineering. b

Features of Electrochemical and Conformational Behavior of Intergel System Based on Polyacrylic Acid and Poly-4-Vinylpyridine Hydrogels in an Aqueous Medium