Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.032
Z. Borovets, I. Lutsyuk, A. Zahrai
The influence of vibro-activated lime additive on the hydration processes of Portland cement and the nature of changes in the strength of cement stone at different stages of its hardening were studied. It was established that long-term storage of vibro-activated lime in a wet state does not weaken its properties as a modifying additive. The methods of determining the heat release of cement dough during hardening and X-ray phase analysis show that the addition of vibro- activated lime at the initial stages of hardening accelerates the physicochemical processes of hydration of calcium silicates of clinker minerals.
{"title":"Research of the influence of vibroactivated lime on the hydration of portland cement and its hardening","authors":"Z. Borovets, I. Lutsyuk, A. Zahrai","doi":"10.23939/ctas2023.01.032","DOIUrl":"https://doi.org/10.23939/ctas2023.01.032","url":null,"abstract":"The influence of vibro-activated lime additive on the hydration processes of Portland cement and the nature of changes in the strength of cement stone at different stages of its hardening were studied. It was established that long-term storage of vibro-activated lime in a wet state does not weaken its properties as a modifying additive. The methods of determining the heat release of cement dough during hardening and X-ray phase analysis show that the addition of vibro- activated lime at the initial stages of hardening accelerates the physicochemical processes of hydration of calcium silicates of clinker minerals.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84016333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.137
O. Grytsenko, Ľ. Dulebová, N. Baran, T. Grytsenko, P. Voloshkevych
Composite materials based on copolymers of polyvinylpyrrolidone and 2-hydroxyethylmethacrylate with combined fillers consisting of metal powders and graphite were obtained by the method of polymerization filling. The developed materials are characterized by sufficiently high physical and mechanical properties, increased electrical conductivity and water content. It was established that the addition of graphite to metal-filled copolymers increases the sensitivity of the electrical resistance of composites to moisture changes.
{"title":"Еlectrically conductive composite materials based on polyvinylpyrrolidone copolymers with combined fillers","authors":"O. Grytsenko, Ľ. Dulebová, N. Baran, T. Grytsenko, P. Voloshkevych","doi":"10.23939/ctas2023.01.137","DOIUrl":"https://doi.org/10.23939/ctas2023.01.137","url":null,"abstract":"Composite materials based on copolymers of polyvinylpyrrolidone and 2-hydroxyethylmethacrylate with combined fillers consisting of metal powders and graphite were obtained by the method of polymerization filling. The developed materials are characterized by sufficiently high physical and mechanical properties, increased electrical conductivity and water content. It was established that the addition of graphite to metal-filled copolymers increases the sensitivity of the electrical resistance of composites to moisture changes.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86414697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.008
R. R. Kostiuk, Y. Horak, N. Velychkivska, I. Sobechko, D. B. Pyshna, V. Dibrivnyi
The temperature dependence of the saturated vapor pressure and the combustion energy of 2-methyl-5-phenylfuran-3-carboxylic acid were determined by experimental methods. Based on the obtained data, the values of the enthalpies of combustion and formation in the condensed state were calculated. The enthalpy of sublimation was recalculated to 298K. The additive Benson scheme is supplemented with new fragments for calculating the enthalpies of formation in the gaseous state. The possibility of using the Joback method to calculate the enthalpies of formation of aryl furans in the gaseous state is analyzed.
{"title":"Thermodynamic properties of 2-methyl-5-phenylfuran-3-carboxylic","authors":"R. R. Kostiuk, Y. Horak, N. Velychkivska, I. Sobechko, D. B. Pyshna, V. Dibrivnyi","doi":"10.23939/ctas2023.01.008","DOIUrl":"https://doi.org/10.23939/ctas2023.01.008","url":null,"abstract":"The temperature dependence of the saturated vapor pressure and the combustion energy of 2-methyl-5-phenylfuran-3-carboxylic acid were determined by experimental methods. Based on the obtained data, the values of the enthalpies of combustion and formation in the condensed state were calculated. The enthalpy of sublimation was recalculated to 298K. The additive Benson scheme is supplemented with new fragments for calculating the enthalpies of formation in the gaseous state. The possibility of using the Joback method to calculate the enthalpies of formation of aryl furans in the gaseous state is analyzed.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84851967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.093
D. S. Zahorodnia, І. B. Petenko, Yu. І. Теplа, R. Petrina
Crocus sativus (saffron) contains biologically active substances and is used in the food and cosmetic industries. With the preservation of plant diversity in nature, the biotechnological method of tissue culture was used and the plant was introduced into in vitro conditions. The influence of the composition of the nutrient mediumon the growth of biomass and production was studied. The best results were obtained with the use of growth regulators benzylaminopurine (BAP) and naphthylacetic acid (NOK) in the amount of 20 μmol/l BAP + 15 μmol/l NOK. Cultivation time was 12 weeks. After transplanting into pots with clay soil, bulbs weighing 2.5 g sprouted and bloomed. The use of the biotechnological method of tissue culture is economically, ecologically beneficial and promising.
{"title":"Сultivation for Сrocus Sativa in vitro","authors":"D. S. Zahorodnia, І. B. Petenko, Yu. І. Теplа, R. Petrina","doi":"10.23939/ctas2023.01.093","DOIUrl":"https://doi.org/10.23939/ctas2023.01.093","url":null,"abstract":"Crocus sativus (saffron) contains biologically active substances and is used in the food and cosmetic industries. With the preservation of plant diversity in nature, the biotechnological method of tissue culture was used and the plant was introduced into in vitro conditions. The influence of the composition of the nutrient mediumon the growth of biomass and production was studied. The best results were obtained with the use of growth regulators benzylaminopurine (BAP) and naphthylacetic acid (NOK) in the amount of 20 μmol/l BAP + 15 μmol/l NOK. Cultivation time was 12 weeks. After transplanting into pots with clay soil, bulbs weighing 2.5 g sprouted and bloomed. The use of the biotechnological method of tissue culture is economically, ecologically beneficial and promising.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84165411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.038
Z. Znak, Y. Sukhatskyi, P. R. Gogat, R. Mnykh, P. Thanekar
The threshold value of the energy required for the decomposition of benzene after the cessation of cavitation has been established. The regularities of the oxidative destruction of benzene in the cyclic mode “cavitation-exposure” were established. The possibility of destruction of benzene in case of initiation of the process by introducing a certain amount of its cavitationally activated part into the water-benzene medium is shown. The role of oxygen in the cavitation decomposition of benzene was experimentally confirmed.
{"title":"Оxidative destruction of benzene in the conditions of unstationary cavitation excitation","authors":"Z. Znak, Y. Sukhatskyi, P. R. Gogat, R. Mnykh, P. Thanekar","doi":"10.23939/ctas2023.01.038","DOIUrl":"https://doi.org/10.23939/ctas2023.01.038","url":null,"abstract":"The threshold value of the energy required for the decomposition of benzene after the cessation of cavitation has been established. The regularities of the oxidative destruction of benzene in the cyclic mode “cavitation-exposure” were established. The possibility of destruction of benzene in case of initiation of the process by introducing a certain amount of its cavitationally activated part into the water-benzene medium is shown. The role of oxygen in the cavitation decomposition of benzene was experimentally confirmed.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80218007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.060
V. Reutskyy, А. Ludyn
Ways of using perfluorinated sulfonamides in various technological processes are considered. The possibility of using aminotoxane as a catalyst in the process of cyclohexane oxidation was studied. Various technological parameters of the use of the binary catalytic system: cobalt naphthenate - aminotoxane in the process of cyclohexane oxidation and their influence on the main indicators of this process were studied. The positive influence of perfluorinated sulfamides in binary systems with cobalt naphthenate on their catalytic activity in the process of cyclohexane oxidation was determined.
{"title":"Рerfluorinated sulfamides in the oxidation process of cyclohexane","authors":"V. Reutskyy, А. Ludyn","doi":"10.23939/ctas2023.01.060","DOIUrl":"https://doi.org/10.23939/ctas2023.01.060","url":null,"abstract":"Ways of using perfluorinated sulfonamides in various technological processes are considered. The possibility of using aminotoxane as a catalyst in the process of cyclohexane oxidation was studied. Various technological parameters of the use of the binary catalytic system: cobalt naphthenate - aminotoxane in the process of cyclohexane oxidation and their influence on the main indicators of this process were studied. The positive influence of perfluorinated sulfamides in binary systems with cobalt naphthenate on their catalytic activity in the process of cyclohexane oxidation was determined.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88417420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.099
O. Yaremkevych, V. Lubenets
By means of morphological studies, it was established that the influence of thiosulfonate solutions of different structure doesn’t show an inhibition of blastomere division and germ layer formation of the freshwater bony fish, namely weatherfish (MisgurnusfossіlisL). However, under the effect of potassium nitrobenzenethiosulfonate (NTK), at the pre-hatching stage (36thdevelopment stage), that is responsible for the establishment of erythrocyte circulation, external gills predevelopment and the appearance of pigmentation, we observed a delay for approximately 13-16 hours with the imminent vascular pathology. The pronounced changes of cardio-vascular system, which manifested itself in vasodilation, were spotted later on after the NTK influence.The results showed evidence of thiosulfate acid’s derivatives, namely NTK, being promising, highly efficient, non-toxic antithrombotic and antiplatelet remedies.
{"title":"Тhe influence of thiosulfic acid derivatives on the morphological properties of loach embryos at the initial stages of development","authors":"O. Yaremkevych, V. Lubenets","doi":"10.23939/ctas2023.01.099","DOIUrl":"https://doi.org/10.23939/ctas2023.01.099","url":null,"abstract":"By means of morphological studies, it was established that the influence of thiosulfonate solutions of different structure doesn’t show an inhibition of blastomere division and germ layer formation of the freshwater bony fish, namely weatherfish (MisgurnusfossіlisL). However, under the effect of potassium nitrobenzenethiosulfonate (NTK), at the pre-hatching stage (36thdevelopment stage), that is responsible for the establishment of erythrocyte circulation, external gills predevelopment and the appearance of pigmentation, we observed a delay for approximately 13-16 hours with the imminent vascular pathology. The pronounced changes of cardio-vascular system, which manifested itself in vasodilation, were spotted later on after the NTK influence.The results showed evidence of thiosulfate acid’s derivatives, namely NTK, being promising, highly efficient, non-toxic antithrombotic and antiplatelet remedies. ","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87714423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.054
R. Subtelnyi, Y. Zhuravskyi, O. Orobchuk, B. Dzinyak
The oligomerization in solution and suspension oligomerization of the fraction C9 of liquid by-products of pyrolysis of diesel fuel is initiated by 2- (third-butylperoxymethylamineo) acetate acid have been studied. The nature of the effect of oligomerization, the concentration of the initiator, the temperature and duration of the reaction to the output and the physicochemical characteristics of the obtained oligomers were clarified. The optimal technological parameters of the process of oligomerization of the fraction C9 were selected. Relatively peculiarities of the course of suspension oligomerization and oligomerization in the solution of the fraction C9.
{"title":"С9 fraction oligomerization with the use 2-(tert-butylperoxymethylamino)acetic acid","authors":"R. Subtelnyi, Y. Zhuravskyi, O. Orobchuk, B. Dzinyak","doi":"10.23939/ctas2023.01.054","DOIUrl":"https://doi.org/10.23939/ctas2023.01.054","url":null,"abstract":"The oligomerization in solution and suspension oligomerization of the fraction C9 of liquid by-products of pyrolysis of diesel fuel is initiated by 2- (third-butylperoxymethylamineo) acetate acid have been studied. The nature of the effect of oligomerization, the concentration of the initiator, the temperature and duration of the reaction to the output and the physicochemical characteristics of the obtained oligomers were clarified. The optimal technological parameters of the process of oligomerization of the fraction C9 were selected. Relatively peculiarities of the course of suspension oligomerization and oligomerization in the solution of the fraction C9.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81618480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.088
U. Zhuravel, R. Konechna, І. Jasicka-Misiak
The objective of the present study was to determine the total content of phenolics and flavonoids in extracts of Thalictrum foetidum. The total phenolic content was estimated spectrophotometrically using Folin Ciocalteu method. The total content of flavonoids was determined by spectrophotometric analysis, based on the measurement of the absorption of the complex of aluminum chloride with flavonoids. The antioxidant effects of the extracts Thalictrum foetidum were investigated.
{"title":"Total phenolic and flavonoid content, antioxidant activity of thalictrum foetidum","authors":"U. Zhuravel, R. Konechna, І. Jasicka-Misiak","doi":"10.23939/ctas2023.01.088","DOIUrl":"https://doi.org/10.23939/ctas2023.01.088","url":null,"abstract":"The objective of the present study was to determine the total content of phenolics and flavonoids in extracts of Thalictrum foetidum. The total phenolic content was estimated spectrophotometrically using Folin Ciocalteu method. The total content of flavonoids was determined by spectrophotometric analysis, based on the measurement of the absorption of the complex of aluminum chloride with flavonoids. The antioxidant effects of the extracts Thalictrum foetidum were investigated.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76448651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.131
G. Dudok, N. Semenyuk, Y. Parfonov
The regularities of obtaining polylactide film composite materials with simultaneous silver nanoparticles formation were researched. The influence of the nature of polylactide and its structure (amorphous and amorphous-crystalline), of the glycerin plasticizer on the solvent evaporationkinetics was determined. To give polylactide composites fungicidal properties, the silver reduction reaction by the interaction of argentum salts with polyvinylpyrrolidone was applied. A main technological scheme for obtaining films based on polylactide with fungicidal properties is proposed. Above mentioned provides effective practical usage of the films as packaging materials for food products and medicines.
{"title":"Рolylactide composite materials possesing fungibactericidal properties","authors":"G. Dudok, N. Semenyuk, Y. Parfonov","doi":"10.23939/ctas2023.01.131","DOIUrl":"https://doi.org/10.23939/ctas2023.01.131","url":null,"abstract":"The regularities of obtaining polylactide film composite materials with simultaneous silver nanoparticles formation were researched. The influence of the nature of polylactide and its structure (amorphous and amorphous-crystalline), of the glycerin plasticizer on the solvent evaporationkinetics was determined. To give polylactide composites fungicidal properties, the silver reduction reaction by the interaction of argentum salts with polyvinylpyrrolidone was applied. A main technological scheme for obtaining films based on polylactide with fungicidal properties is proposed. Above mentioned provides effective practical usage of the films as packaging materials for food products and medicines.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89343295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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