Pub Date : 2022-12-01DOI: 10.23939/ctas2022.02.001
Z. Komarenska, L. P. Oliynuk, O. Makota
The regularities of epoxide formation during the activation of the Mo2B catalyst in the reaction of β- ethylalyl--ethyl acrylate interaction with tert-butyl hydroperoxide have been studied. The change in the composition of the Mo2B catalyst surface and its amount in the reaction mixture was studied. As well as reaction products (tert-butyl alcohol and 2,3-epoxy-2-ethylpropylethyl acrylate). It is shown that the selectivity of epoxy formation is not constant. It was found that the hydroperoxide on the non-activated form of the catalyst is consumed unproductively, and on the activated completely spent on epoxidation.
{"title":"REGULARITIES OF EPOXIDE FORMATION DURING THE ACTIVATION OF Mo2B IN THE REACTION OF -ETHYLALYL--ETHYL ACRYLATE WITH TERT-BUTYL HYDROPEROXIDE","authors":"Z. Komarenska, L. P. Oliynuk, O. Makota","doi":"10.23939/ctas2022.02.001","DOIUrl":"https://doi.org/10.23939/ctas2022.02.001","url":null,"abstract":"The regularities of epoxide formation during the activation of the Mo2B catalyst in the reaction of β- ethylalyl--ethyl acrylate interaction with tert-butyl hydroperoxide have been studied. The change in the composition of the Mo2B catalyst surface and its amount in the reaction mixture was studied. As well as reaction products (tert-butyl alcohol and 2,3-epoxy-2-ethylpropylethyl acrylate). It is shown that the selectivity of epoxy formation is not constant. It was found that the hydroperoxide on the non-activated form of the catalyst is consumed unproductively, and on the activated completely spent on epoxidation.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85830418","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 : 2022-12-01DOI: 10.23939/ctas2022.02.079
R. I. Procop, O. Grynyshyn, T. Chervinskyy, V. Kochubei
The paper describes the results of research on changes in the performance of fresh and used semi- synthetic motor oil ELF Evolution 700 STI for gasoline engines of cars. The change of physicochemical properties of fresh and used semi-synthetic motor oil before and after its use in a gasoline engine has been studied. The results of derivatographic and IR spectroscopic studies of these oils are presented. The composition of the inorganic part of the studied semi-synthetic oils was determined by the method of X-ray fluorescence research.
{"title":"STUDY OF CHANGES IN PERFORMANCE PROPERTIES OF ELF EVOLUTION 700 STI SEMI-SYNTHETIC ENGINE OIL AFTER USE IN GASOLINE ENGINE","authors":"R. I. Procop, O. Grynyshyn, T. Chervinskyy, V. Kochubei","doi":"10.23939/ctas2022.02.079","DOIUrl":"https://doi.org/10.23939/ctas2022.02.079","url":null,"abstract":"The paper describes the results of research on changes in the performance of fresh and used semi- synthetic motor oil ELF Evolution 700 STI for gasoline engines of cars. The change of physicochemical properties of fresh and used semi-synthetic motor oil before and after its use in a gasoline engine has been studied. The results of derivatographic and IR spectroscopic studies of these oils are presented. The composition of the inorganic part of the studied semi-synthetic oils was determined by the method of X-ray fluorescence research.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82441427","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 : 2022-12-01DOI: 10.23939/ctas2022.02.136
Н. V. Karpyk, O. Vichko, N. Kopchak, O. Shved
The article discusses the issue of expanding the range of bakery products using rhubarb processing products. The recipe for buns with rhubarb filling was developed and the technological parameters of their production were established. Based on the physico-chemical properties of this plant, the influence of the additive on the baking properties of flour, the process of acid accumulation and product quality indicators was determined. Strengthening of flour gluten with a simultaneous decrease in its amount and an active increase in acidity in the first 1.5 hours of dough ripening have been determined. A puree dosage of 20 % is optimal for obtaining buns with good shape stability, elastic crumb, small thin-walled porosity, pleasant taste and aroma.
{"title":"FEATURES OF PRODUCTION OF BAKERY PRODUCTS WITH RHEUM L.","authors":"Н. V. Karpyk, O. Vichko, N. Kopchak, O. Shved","doi":"10.23939/ctas2022.02.136","DOIUrl":"https://doi.org/10.23939/ctas2022.02.136","url":null,"abstract":"The article discusses the issue of expanding the range of bakery products using rhubarb processing products. The recipe for buns with rhubarb filling was developed and the technological parameters of their production were established. Based on the physico-chemical properties of this plant, the influence of the additive on the baking properties of flour, the process of acid accumulation and product quality indicators was determined. Strengthening of flour gluten with a simultaneous decrease in its amount and an active increase in acidity in the first 1.5 hours of dough ripening have been determined. A puree dosage of 20 % is optimal for obtaining buns with good shape stability, elastic crumb, small thin-walled porosity, pleasant taste and aroma.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81350649","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 : 2022-12-01DOI: 10.23939/ctas2022.01.208
A. Stasiuk, V. I. Lyakh, S. M. Kapatsila, N. Fihurka, V. Samaryk
New phosphorus-containing polyesters based on N-derivatives of dicarboxylic α-amino acids and diols of the polyoxyethylene series in which the phosphate group has been introduced are synthesized, capable of forming self-stabilized dispersions with nanosized particles of the dispersed phase in aqueous media. The introduction of the phosphate group in the hydrophilic fragment significantly increases the stabilizing ability. The properties of new phosphorus-containing polyesters allow us to consider them as potential systems for drug delivery.
{"title":"STUDY OF THE SIZE OF THE DISPERSED PHASE OF SELF-STABILIZED AQUEOUS DISPERSION OF PHOSPHORUS-CONTAINING POLYESTERS","authors":"A. Stasiuk, V. I. Lyakh, S. M. Kapatsila, N. Fihurka, V. Samaryk","doi":"10.23939/ctas2022.01.208","DOIUrl":"https://doi.org/10.23939/ctas2022.01.208","url":null,"abstract":"New phosphorus-containing polyesters based on N-derivatives of dicarboxylic α-amino acids and diols of the polyoxyethylene series in which the phosphate group has been introduced are synthesized, capable of forming self-stabilized dispersions with nanosized particles of the dispersed phase in aqueous media. The introduction of the phosphate group in the hydrophilic fragment significantly increases the stabilizing ability. The properties of new phosphorus-containing polyesters allow us to consider them as potential systems for drug delivery.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87660366","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 : 2022-12-01DOI: 10.23939/ctas2022.01.185
G. Dudok, N. Semenyuk, V. Skorokhoda, Z. Gubriy
The regularities of silver nanoparticles derivation using polyvinylpyrrolidone as a reducing agent and stabilizer simultaneously have been studied. The silver spherical nanoparticles was confirmed by UV, FT-IR spectroscopy and TEM analysis. The influence of temperature and reagent concentration on the kinetics of silver reduction from argentum salts was determined. Silver-containing composites based on copolymers of polyvinylpyrrolidone and methacrylic esters with silver nanoparticles in the form of porous blocks and films were synthesized. Also their high bactericidal and fungicidal properties were revealed. The developed porous composites are recommended for application in medicine to replace damaged bone tissue in the processes of osteogenesis.
{"title":"APPLYING THE POLYVINYLPYRROLIDONE AS A HIGHLY EFFICIENT REDUCTANT AND STABILIZER IN REACTIONS OF SILVER NANOPARTICLES SYNTHESIS","authors":"G. Dudok, N. Semenyuk, V. Skorokhoda, Z. Gubriy","doi":"10.23939/ctas2022.01.185","DOIUrl":"https://doi.org/10.23939/ctas2022.01.185","url":null,"abstract":"The regularities of silver nanoparticles derivation using polyvinylpyrrolidone as a reducing agent and stabilizer simultaneously have been studied. The silver spherical nanoparticles was confirmed by UV, FT-IR spectroscopy and TEM analysis. The influence of temperature and reagent concentration on the kinetics of silver reduction from argentum salts was determined. Silver-containing composites based on copolymers of polyvinylpyrrolidone and methacrylic esters with silver nanoparticles in the form of porous blocks and films were synthesized. Also their high bactericidal and fungicidal properties were revealed. The developed porous composites are recommended for application in medicine to replace damaged bone tissue in the processes of osteogenesis.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90764593","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 : 2022-12-01DOI: 10.23939/ctas2022.02.154
Y. Khlibyshyn, I. Pochapska
The results of research on the fermentation process of apple juice and its concentrate are described. For this, two races of yeast of the types Saccharomyces bayanus (France) were selected and wild yeast was taken for comparison. The influence of temperature (10–30 0C) and duration of fermentation (12–40 days) on alcohol yield, content of total extract and sugar is shown. The quality characteristics of fruit wines characterized by aroma, strength, extract and sugar content has been established. The suitability of ciders for the production of calvados by distillation and aging of the obtained drinks has been studied. The taste and aroma of the obtained drinks were evaluated, namely: the strength, extract content and aroma, which affect the quality of the obtained products, were determined. An organoleptic evaluation of the obtained products and French Calvados was made.
{"title":"RESERCH OF THE CONDITIONS FOR OBTAINING ALCOHOLIC BEVERAGES FROM APPLES","authors":"Y. Khlibyshyn, I. Pochapska","doi":"10.23939/ctas2022.02.154","DOIUrl":"https://doi.org/10.23939/ctas2022.02.154","url":null,"abstract":"The results of research on the fermentation process of apple juice and its concentrate are described. For this, two races of yeast of the types Saccharomyces bayanus (France) were selected and wild yeast was taken for comparison. The influence of temperature (10–30 0C) and duration of fermentation (12–40 days) on alcohol yield, content of total extract and sugar is shown. The quality characteristics of fruit wines characterized by aroma, strength, extract and sugar content has been established. The suitability of ciders for the production of calvados by distillation and aging of the obtained drinks has been studied. The taste and aroma of the obtained drinks were evaluated, namely: the strength, extract content and aroma, which affect the quality of the obtained products, were determined. An organoleptic evaluation of the obtained products and French Calvados was made.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81410152","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 : 2022-12-01DOI: 10.23939/ctas2022.02.037
S. Gerasymchuk, I. Poliuzhyn, L. Oliynyk, T. Hnativ
In the work with the help of a static method with a membrane zero-manometer, the liquid- vapor balance in the system “dimethylzinc – dimethyl telluride” in the temperature range 270– 360 K with the content of dimethylzinc as 50.00 and 70.32 % mol. The total vapor pressure was measured for both saturated and unsaturated vapors for different samples. It was found that these solutions are not azeotropic. Using the equation of state PV = nRT, according to the thermal expansion of unsaturated vapor, the average molecular weight was calculated for mixtures “dimethylzinc – dimethyltelluride” mentioned compositions. The results of this calculation indicate the absence of significant association between molecules of the solution components in the gas phase.
{"title":"EVAPORATION THERMODYNAMICS FOR SOLUTIONS OF DIMETHYLZINC AND DIMETHYLTELLURIDE","authors":"S. Gerasymchuk, I. Poliuzhyn, L. Oliynyk, T. Hnativ","doi":"10.23939/ctas2022.02.037","DOIUrl":"https://doi.org/10.23939/ctas2022.02.037","url":null,"abstract":"In the work with the help of a static method with a membrane zero-manometer, the liquid- vapor balance in the system “dimethylzinc – dimethyl telluride” in the temperature range 270– 360 K with the content of dimethylzinc as 50.00 and 70.32 % mol. The total vapor pressure was measured for both saturated and unsaturated vapors for different samples. It was found that these solutions are not azeotropic. Using the equation of state PV = nRT, according to the thermal expansion of unsaturated vapor, the average molecular weight was calculated for mixtures “dimethylzinc – dimethyltelluride” mentioned compositions. The results of this calculation indicate the absence of significant association between molecules of the solution components in the gas phase.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"1634 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76280149","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 : 2022-12-01DOI: 10.23939/ctas2022.02.149
T. Savchuk, S. Korolchuk, Z. Kormosh, O. Yurchenko, Y. Panchenko
I3-sensitive sensor was developed, where the ionic acetate of the neutral red triiodide was used as the electrodoactive substance. The main electroanalytical characteristics of the sensor have been studied. It is established that the operating interval of the pH of the chain is 2–12. The interval of linearity of the electrode function is 9×10–5 – 1×10–1 mol/l, the slope is 51–59 mV/pC. The selectivity of the triiodide sensor by the “individual-solutions” method has been studied. The method of potentiometric titration allows to determine peroxo compounds and peroxide number in mayonnaise in the presence of tartrate, citrate, benzoate, salicylate, oxalate, phthalate ions, glucose, glycine, histidine, aspirin.
{"title":"POTENTIOMETRIC DETERMINATION OF PERO-COMPOUNDS IN MAYONNAISE","authors":"T. Savchuk, S. Korolchuk, Z. Kormosh, O. Yurchenko, Y. Panchenko","doi":"10.23939/ctas2022.02.149","DOIUrl":"https://doi.org/10.23939/ctas2022.02.149","url":null,"abstract":"I3-sensitive sensor was developed, where the ionic acetate of the neutral red triiodide was used as the electrodoactive substance. The main electroanalytical characteristics of the sensor have been studied. It is established that the operating interval of the pH of the chain is 2–12. The interval of linearity of the electrode function is 9×10–5 – 1×10–1 mol/l, the slope is 51–59 mV/pC. The selectivity of the triiodide sensor by the “individual-solutions” method has been studied. The method of potentiometric titration allows to determine peroxo compounds and peroxide number in mayonnaise in the presence of tartrate, citrate, benzoate, salicylate, oxalate, phthalate ions, glucose, glycine, histidine, aspirin.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75211888","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 : 2022-12-01DOI: 10.23939/ctas2022.02.088
R. Subtelnyi, D. Kichura, B. Dzinyak
The production of oligomers (petroleum polymer resins) by oligomerization of the C9 fraction of liquid by-products of diesel fuel pyrolysis initiated by aromatic N-substituted aminoperoxide initiators was studied. The nature of the influence of thermodynamic parameters of initiator decomposition, their concentration and reaction temperature on yield and physicochemical characteristics of the obtained oligomers are clarified. The optimal technological parameters of the C9 fraction oligomerization process are selected. The approximate hydrocarbon composition of products representing styrene-cyclopentadiene cooligomers has been determined.
{"title":"C9 FRACTION OLIGOMERIZATION INITIATED BY N-SUBSTITUTED AROMATIC AMINOPEROXIDES","authors":"R. Subtelnyi, D. Kichura, B. Dzinyak","doi":"10.23939/ctas2022.02.088","DOIUrl":"https://doi.org/10.23939/ctas2022.02.088","url":null,"abstract":"The production of oligomers (petroleum polymer resins) by oligomerization of the C9 fraction of liquid by-products of diesel fuel pyrolysis initiated by aromatic N-substituted aminoperoxide initiators was studied. The nature of the influence of thermodynamic parameters of initiator decomposition, their concentration and reaction temperature on yield and physicochemical characteristics of the obtained oligomers are clarified. The optimal technological parameters of the C9 fraction oligomerization process are selected. The approximate hydrocarbon composition of products representing styrene-cyclopentadiene cooligomers has been determined.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85569345","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 : 2022-12-01DOI: 10.23939/ctas2022.02.171
N. Baran, O. Grytsenko, V. S. I. Moravsky
The paper presents the study results of the molecular weight effect of polyvinylpyrrolidone (PVP) on the properties of composite hydrogels/polycaproamide membranes, which were obtained by modifying hydrogel films based on copolymers of 2-hydroxyethylmethacrylate (HEMA) with PVP by applying ultra- thin layers on the basis of a polyamide (PA-6) with PVP mixture. It was found that the interaction magnitude between the layers of composite membranes, as well as their properties – water content, tensile strength, salt and water permeability coefficients, largely depend on the molecular weight of PVP as in the original polymer-monomer composition and in the modifying PA-6/PVP solution.
{"title":"INFLUENCE OF POLYVINYLPYRROLIDONE MOLECULAR WEIGHT ON THE SORPTION AND PHYSICAL-MECHANICAL PROPERTIES OF HYDROGEL/POLYCAPROAMIDE TWO-LAYER MEMBRANES","authors":"N. Baran, O. Grytsenko, V. S. I. Moravsky","doi":"10.23939/ctas2022.02.171","DOIUrl":"https://doi.org/10.23939/ctas2022.02.171","url":null,"abstract":"The paper presents the study results of the molecular weight effect of polyvinylpyrrolidone (PVP) on the properties of composite hydrogels/polycaproamide membranes, which were obtained by modifying hydrogel films based on copolymers of 2-hydroxyethylmethacrylate (HEMA) with PVP by applying ultra- thin layers on the basis of a polyamide (PA-6) with PVP mixture. It was found that the interaction magnitude between the layers of composite membranes, as well as their properties – water content, tensile strength, salt and water permeability coefficients, largely depend on the molecular weight of PVP as in the original polymer-monomer composition and in the modifying PA-6/PVP solution.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"2013 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82674400","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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