https://elib.bsu.by:443/handle/123456789/134198 2026-04-20T10:13:34Z https://elib.bsu.by:443/handle/123456789/106430 Заглавие документа: Анионселективные электроды с нетрадиционной селективностью: проблемы и перспективы Авторы: Егоров, Владимир Владимирович; Рахманько, Евгений Михайлович; Гулевич, Александр Львович; Ратько, Александр Анатольевич; Ломако, Валерий Леонтьевич; Кийко, Татьяна Николаевна Аннотация: The present state of the problem of creation of liquid anionselective electrodes with non- traditional selectivity is reported. The main factors, responsible for deviation of selectivity of electrodes from the extraction Hofmeister series are discussed for electrodes based on high quaternary ammonium salts, charged and neutral metal complex compounds (metalloporphyrins, metallocorrines, metallophtalocyanines and etc.), organometallic compounds, containing covalent carbon-metal bond, ionic associates o f anionic complexes of metals with quaternary ammonium cations (display of ligand function) and also polycentric organic compounds, having the ability to form several hydrogen or ion-dipole bonds with determined anions. 2001-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/106429 Заглавие документа: Проблема устойчивости дисперсий активированного угля и ее решение Авторы: Невар, Татьяна Николаевна; Савицкая, Татьяна Александровна; Цыганкова, Надежда Георгиевна; Гриншпан, Дмитрий Давидович Аннотация: The effect of water-soluble polymers on the stability and dispersity of carbon active tablets suspensions has been studied. It was established that such polymers binders as poly( vinyl alcohol) , carboxymethyl cellulose, methyl cellulose do not increase carbon active suspensions stability. At the same time carbon tablets suspensions containing new water-soluble cellulose derivative have heightened aggregative and sedimentation stability. This accounts for by the appearance of the hydrophilic properties o f the carbon particles surface. This hydrophilization is the result of cellulose derivative absorption on this surface. The particles of initial carbon and traditional tablets do not possess hydrophilic properties. 2001-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/106380 Заглавие документа: Жидкокристаллические структуры в водно-солевых растворах сульфоацетата целлюлозы Авторы: Гриншпан, Дмитрий Давидович; Третьякова, Светлана Михайловна; Савицкая, Татьяна Александровна; Цыганкова, Надежда Георгиевна; Макаревич, Светлана Евгеньевна Аннотация: We have studied optical, rheological, hydrodynamical properties in aqueous and aqueous - salt solutions of cellulose sulfate-acetate in different forms - H+, I.i+, Na*, K+ and Ca2\ We have fixed for the first time spontaneous liquid crystalline ordering for synthesized polymeric acid and all it"s salts with the exception of potassium. It was shown that formation of liquid crystalline state in aqueous solutions of cellulose sulfate-acetate depends on both concentration of solutions and nature of kations. 2001-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/106370 Заглавие документа: Стабилизация полимеров различных классов пространственно-затрудненными аминами Авторы: Прокопович, Владимир Петрович; Климовцова, Ираида Аркадьевна; Прокопчук, Николай Романович Аннотация: The synthesis of a number of (sterically) hindered amines (HA) is carried out and their efficiency as photo and thermal stabilizers of polyolefins and polyamide-6 is investigated. The influence of the substituents of the piperidine ring on the activity of HA is investigated. On an example of orto- and para-substituents of piperidinylphthalates it is shown, that the degree of HA activity depends on the stability of nitroxyl radical formed from amine. The synergism of action of mixtures of HA and secondary aromatic amines during suppression of thermal decomposition of polyamide-6 is found. 2001-01-01T00:00:00Z