pH-Sensitive Hydrogels Based on Copolymers of Chitosan with Acrylamide and Sodium Acrylate

Lidia Kropotova; Alexandra O. Grigoreva; A.E. Mochalova

doi:10.4028/www.scientific.net/KEM.899.92

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 899pH-Sensitive Hydrogels Based on Copolymers of...

pH-Sensitive Hydrogels Based on Copolymers of Chitosan with Acrylamide and Sodium Acrylate

Abstract:

pH-sensitive hydrogels based on chitosan-graft-poly(acrylamide-co-sodium acrylate) were synthesized via radical polymerization in solution. Ammonium persulfate was used as initiator, and various amounts of hexamine were used as a cross-linking agent. The structure of obtained hydrogels was characterized by Fourier transform infrared spectroscopy. Moisture-absorbing power of hydrogels in buffer solution with various pH value (pH = 1.65; 4.01; 12.43) was investigated. It is turned out that such a copolymers have a high moisture retention capacity (swelling index attains the value 1100%) and are capable for reusing, that makes it possible to apply the hydrogels in different areas.

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Periodical:

Key Engineering Materials (Volume 899)

Pages:

92-97

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.899.92

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Online since:

September 2021

Authors:

Lidia Kropotova*, Alexandra O. Grigoreva, A.E. Mochalova

Keywords:

Acrylamide, Acrylic Acid, Chitosan, Graft Polymerization, pH-Sensitive Hydrogels, Swelling Coefficient

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