Ovsiankina, ViktoriiaDemchenko, ValeriyKhohotva, OleksandrKrysenko, TamaraIurzhenko, Maksym2025-03-172025-03-172024Study of properties of membranes based on carboxymethyl cellulose and chitosan / Viktoriia Ovsiankina, Valeriy Demchenko, Oleksandr Khohotva, Tamara Krysenko, Maksym Iurzhenko // Вісник НТУУ «КПІ ім. Ігоря Сікорського». Серія «Хімічна інженерія, екологія та ресурсозбереження». – 2024. – № 4 (23). – С. 78-83. – Бібліогр.: 11 назв.https://ela.kpi.ua/handle/123456789/72955Оne of the promising directions is the obtaining of biodegradable nanocomposite membranes, which allow to achieve a high level of purification and do not pollute the environment after their using. Anionic polyelectrolyte – Na-carboxymethyl cellulose with molecular weight Mw ~ 90000 and cationic polyelectrolyte – low molecular weight chitosan were used to create these membranes. Polymeric membranes were formed by mixing aqueous solutions of chitosan hydrochloride and Na-carboxymethylcellulose in different ratios. For study of the mechanical properties of membranes based on natural polymers such as chitosan and Na-CMC, the membranes were tested by the AG-Xplus apparatus by breaking. It was established that the membranes based on chitosan and Na-CMC have high mechanical strength. They can withstand a pressure of more than 5 atmospheres without damage. This makes it suitable for using in various conditions, including industrial ones. A barometric device was used to test the effectiveness of the obtained membranes. The study was conducted at different pressures (3, 4, 5 atm). It was established that membranes based on polyelectrolyte complexes with a stoichiometric ratio of anionic and cationic polyelectrolytes were the most productive.enwater purificationpolysaccharidepolyelectrolyte complexpolymer membranestructuremechanical propertiesdegree of purificationочищення водиполісахаридполіелектролітний комплексполімерна мембранаструктурамеханічні властивостіступінь очищенняArticleС. 78-83https://doi.org/10.20535/2617-9741.4.2024.319140628.1:66.08