Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 18 2 2022 05 01 Preparation of Composites of Antibacterial ‎Materials Based on Bacterial Cellulose ‎and Silver Nanoparticles for Wound ‎Healing 123 133 252428 EN B. Rakhimova ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan Scientific and Production Technical Center “Zhalyn” LLP, 050012, Almaty, Kazakhstan 0000-0002-7433-1094 K. Kudaibergenov ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan 0000-0002-5444-0314 L. Sassykova ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan 0000-0003-4721-9758 G. Spanova ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan 0000-0002-2911-4146 S. Aknazarov ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan Scientific and Production Technical Center “Zhalyn” LLP, 050012, Almaty, Kazakhstan M. Tulepov ‎Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, ‎‎050040, Almaty, Kazakhstan 0000-0002-6449-9571 Journal Article 2021 06 28 <em>   This study examined the preparation of composites of Bacterial Cellulose (BC) / silver nanoparticles (</em><em>Ag NPs) using a substrate for the fermentation of the bacteria Gluconacetobacter xylinus C-3 and a reducing agent for the synthesis of silver nanoparticles in situ. The presence of silver in the BC/</em> <em>Ag NPs composites was confirmed by various characterization tests. Thus, according to Scanning Electron Microscopy, the average size of silver was recorded at 700 nm. X-ray phase analysis showed an increase in the size of cellulose crystallites up to 122 Å with a decrease in the amount of silver nanoparticles. According to UV-visible spectroscopy, an identification peak was found between 420-580 nm. Measurements of the percentage of water absorption and the edge angles of wetting with water confirmed the structures of the resulting nanocomposites - with a smaller pore diameter and a narrow pore distribution over the film size, depending on the silver content. Using the disk diffusion method, excellent antimicrobial activity was shown with a decrease in the number of bacteria in relation to the pathogenic microorganism Staphylococcus (S.) aureus, Pseudomonas (P.) aeruginosa, Escherichia (E.) coli.  </em> https://www.ijnnonline.net/article_252428_677e7b5a7940508fd61493b9c9c5e9c6.pdf