Iosif V. Gofman, Alexander L. Buyanov, Svetlana A. Bozhkova, Ekaterina M. Gordina, Albert K. Khripunov, Elena M. Ivan’kova, Elena N. Vlasova, Alexander V. Yakimansky, Alexander E. Baranchikov, Vladimir K. Ivanov
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引用次数: 0
Abstract
A group of new hydrogel materials combining high physical properties and pronounced antibacterial activity has been developed. These are composite hydrogels “cellulose-polyacrylamide” based on cellulose matrices of two types: bacterial or regenerated plant cellulose. To form biologically active materials, a method of introducing cerium oxide nanoparticles with sizes less than 5 nm was elaborated. The developed technology allows to obtain hydrogels with the content of cerium oxide (in swollen material) up to 0.4–0.5 wt%. Variations of the ratio of gel components concentrations, type of matrix cellulose and synthesis conditions allow to change the complex of mechanical properties of the material within a wide range, in particular, to obtain both soft, low-modular nanocomposites and hydrogels with record high rigidity. Significant differences in mechanical properties of hydrogels based on different types of cellulose fully correlate with the difference in morphological characteristics of these two groups of materials, revealed by SEM. No palpable effect of nanoparticles on the morphological characteristics of the material was revealed. Both cerium oxide nanoparticles and hydrogels containing cerium oxide showed antibacterial activity against S. aureus ATCC 29213, S. aureus ATCC 43300, P. aeruginosa ATCC 27853, K. pneumoniae ATCC 33495. Different intensity of growth depression of the bacterial cells was determined depending on the samples composition and of the bacteria species.
期刊介绍:
Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.