Pub Date : 2022-01-01DOI: 10.17277/jamt.2022.01.pp.028-035
A. Andreev, Daria N. Yakhina, D. Bryankin, V. Makarova
Perfluorinated polyesters (PFPE) are used as components of high-performance lubricants and oils operating in high and low temperature conditions, including in special-purpose products used in space and in Arctic conditions. To date, the methods for producing PFPE are complex processes that are quite demanding to the conditions of synthesis, which makes it almost impossible to produce these compounds commercially on a large scale. One of the promising approaches to obtaining perfluorinated esters is liquid-phase direct fluorination. Toxic, ozone-depleting solvents have been used in these processes. When they are replaced with harmless, perfluorinated liquids, for example, perfluorodecalin (PFD), another problem is found – the original polyesters are insoluble in PFD, which is confirmed by laser microinterferometry. In this regard, ultrasonic dispersion of the initial polypropylene glycols (PPGs) of various molecular weights in PFD was proposed in order to obtain emulsions for subsequent direct fluorination. The resulting emulsions were studied using gel-penetrating chromatography, dynamic light scattering and gravimetry. According to the results of the study, the values of particle sizes and emulsion concentrations were obtained over time after ultrasound, and it was also concluded that the stability of the molecular weight of PPG in the emulsion after sonification. The applicability of ultrasonic dispersion for a high specific surface area of the phase boundary in the PPG – PFD system is discussed, and the feasibility of sonification in a continuous or batch mode when implementing liquid-phase fluorination of PPG in PFD is also discussed.
{"title":"Investigation of the dispersion process \u0000of polypropylene glycol in perfluorodecalin","authors":"A. Andreev, Daria N. Yakhina, D. Bryankin, V. Makarova","doi":"10.17277/jamt.2022.01.pp.028-035","DOIUrl":"https://doi.org/10.17277/jamt.2022.01.pp.028-035","url":null,"abstract":"Perfluorinated polyesters (PFPE) are used as components of high-performance lubricants and oils operating in high and low temperature conditions, including in special-purpose products used in space and in Arctic conditions. To date, the methods for producing PFPE are complex processes that are quite demanding to the conditions of synthesis, which makes it almost impossible to produce these compounds commercially on a large scale. One of the promising approaches to obtaining perfluorinated esters is liquid-phase direct fluorination. Toxic, ozone-depleting solvents have been used in these processes. When they are replaced with harmless, perfluorinated liquids, for example, perfluorodecalin (PFD), another problem is found – the original polyesters are insoluble in PFD, which is confirmed by laser microinterferometry. In this regard, ultrasonic dispersion of the initial polypropylene glycols (PPGs) of various molecular weights in PFD was proposed in order to obtain emulsions for subsequent direct fluorination. The resulting emulsions were studied using gel-penetrating chromatography, dynamic light scattering and gravimetry. According to the results of the study, the values of particle sizes and emulsion concentrations were obtained over time after ultrasound, and it was also concluded that the stability of the molecular weight of PPG in the emulsion after sonification. The applicability of ultrasonic dispersion for a high specific surface area of the phase boundary in the PPG – PFD system is discussed, and the feasibility of sonification in a continuous or batch mode when implementing liquid-phase fluorination of PPG in PFD is also discussed.","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78584207","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 : 2022-01-01DOI: 10.17277/jamt.2022.03.pp.201-218
O. Shilova, I. B. Glebova, Vadim I. Voshchikov, V. Ugolkov, V. Y. Dolmatov, K. A. Komarova, A. Ivanova
{"title":"Environmentally friendly antifouling transparent coatings based on sol-gel “epoxy/titanium tetrabutoxide” composition modified with detonation nanodiamond","authors":"O. Shilova, I. B. Glebova, Vadim I. Voshchikov, V. Ugolkov, V. Y. Dolmatov, K. A. Komarova, A. Ivanova","doi":"10.17277/jamt.2022.03.pp.201-218","DOIUrl":"https://doi.org/10.17277/jamt.2022.03.pp.201-218","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"151 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77774477","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 : 2022-01-01DOI: 10.17277/jamt.2022.04.pp.299-309
Ekaterina A. Nikolaeva, S. Urvanov, I. S. Filimonenkov, V. Mordkovich
{"title":"Investigation of oxide electrocatalysts for glucose monitoring systems","authors":"Ekaterina A. Nikolaeva, S. Urvanov, I. S. Filimonenkov, V. Mordkovich","doi":"10.17277/jamt.2022.04.pp.299-309","DOIUrl":"https://doi.org/10.17277/jamt.2022.04.pp.299-309","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80535559","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 : 2022-01-01DOI: 10.17277/jamt.2022.02.pp.149-158
I. B. Gorshkov, V. Petrov
{"title":"Experimental study of an annular four-stage thermoacoustic engine with a traveling wave","authors":"I. B. Gorshkov, V. Petrov","doi":"10.17277/jamt.2022.02.pp.149-158","DOIUrl":"https://doi.org/10.17277/jamt.2022.02.pp.149-158","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88588317","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 : 2022-01-01DOI: 10.17277/jamt.2022.02.pp.097-103
S. Boroznin
{"title":"Carbon nanolayers modified with boron atoms as a basis for devices with ionic conductivity: theoretical study","authors":"S. Boroznin","doi":"10.17277/jamt.2022.02.pp.097-103","DOIUrl":"https://doi.org/10.17277/jamt.2022.02.pp.097-103","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89291432","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 : 2022-01-01DOI: 10.17277/jamt.2022.02.pp.104-112
B. Ezzeddin, E. Tugolukov, T. Dyachkova, N. Chapaksov
{"title":"Effect of the carbon nanotubes size and oxidative treatment on their optical properties","authors":"B. Ezzeddin, E. Tugolukov, T. Dyachkova, N. Chapaksov","doi":"10.17277/jamt.2022.02.pp.104-112","DOIUrl":"https://doi.org/10.17277/jamt.2022.02.pp.104-112","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74817072","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 : 2022-01-01DOI: 10.17277/jamt.2022.03.pp.168-171
V. Fedorov, I. Hargittai, V. M. Tyutyunnik
{"title":"The global information and cosmological problem: 2020 Nobel Prize winner in Physics Roger Penrose","authors":"V. Fedorov, I. Hargittai, V. M. Tyutyunnik","doi":"10.17277/jamt.2022.03.pp.168-171","DOIUrl":"https://doi.org/10.17277/jamt.2022.03.pp.168-171","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74651256","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 : 2022-01-01DOI: 10.17277/jamt.2022.04.pp.256-269
P. Vityaz, V. Senyut, M. Kheifetz, A. Kolmakov
{"title":"Obtaining nanocrystalline superhard materials from surface-modified nanodiamond powder","authors":"P. Vityaz, V. Senyut, M. Kheifetz, A. Kolmakov","doi":"10.17277/jamt.2022.04.pp.256-269","DOIUrl":"https://doi.org/10.17277/jamt.2022.04.pp.256-269","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90486791","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 : 2022-01-01DOI: 10.17277/jamt.2022.03.pp.172-180
L. S. Stel'makh, A. O. Zhidovich, A. Stolin, Sergey V. Karpov
{"title":"Finding rational regimes for direct fabrication of long products from powders of refractory compounds by SHS extrusion","authors":"L. S. Stel'makh, A. O. Zhidovich, A. Stolin, Sergey V. Karpov","doi":"10.17277/jamt.2022.03.pp.172-180","DOIUrl":"https://doi.org/10.17277/jamt.2022.03.pp.172-180","url":null,"abstract":"","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88373420","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 : 2021-07-02DOI: 10.17277/jamt.2021.02.pp.113-121
I. Zaporotskova, N. Boroznina, E. Dryuchkov, Tatyana S. Shek, Yulia V. Butenko, P. Zaporotskov
The problem of modifying carbon nanotubes (CNTs) by functional groups is relevant in connection with the intensive development of the nanoindustry, in particular, nano- and microelectronics. For example, a modified nanotube can be used as a sensor device element for detecting microenvironments of various substances, in particular, metals included in salts and alkalis. The paper discusses the possibility of creating a highly efficient sensor using single-walled carbon nanotubes as a sensitive element, the surface of which is modified with the functional nitro group —NO2. Quantum-chemical research of the process of attaching a nitro group to the outer surface of a single-walled CNTs of the (6, 0) type were carried out, which proved the possibility of modifying CNTs and the formation of a bond between the —NO2 group and the carbon atom of the nanotube surface. The results of computer simulation of the interaction process of a surface-modified carbon nanotube with alkali metal atoms (lithium, sodium, potassium) are presented. The sensory interaction of a modified carbon nanosystem with selected metal atoms was investigated, which proved the possibility of identifying these atoms using a nanotubular system that can act as a sensor device element. When interacting with alkali metal atoms in the “СNT – NO2” complex, the number of major carriers increases due to the transfer of electron density from metal atoms to the modified CNTs. The results presented in this paper were obtained using the molecular cluster model and the DFT calculation method with the exchange-correlation functional B3LYP (valence split basis set 6-31G).
{"title":"Surface functionalization of CNTs by a nitro group \u0000as a sensor device element: theoretical research","authors":"I. Zaporotskova, N. Boroznina, E. Dryuchkov, Tatyana S. Shek, Yulia V. Butenko, P. Zaporotskov","doi":"10.17277/jamt.2021.02.pp.113-121","DOIUrl":"https://doi.org/10.17277/jamt.2021.02.pp.113-121","url":null,"abstract":"The problem of modifying carbon nanotubes (CNTs) by functional groups is relevant in connection with the intensive development of the nanoindustry, in particular, nano- and microelectronics. For example, a modified nanotube can be used as a sensor device element for detecting microenvironments of various substances, in particular, metals included in salts and alkalis. The paper discusses the possibility of creating a highly efficient sensor using single-walled carbon nanotubes as a sensitive element, the surface of which is modified with the functional nitro group —NO2. Quantum-chemical research of the process of attaching a nitro group to the outer surface of a single-walled CNTs of the (6, 0) type were carried out, which proved the possibility of modifying CNTs and the formation of a bond between the \u0000—NO2 group and the carbon atom of the nanotube surface. The results of computer simulation of the interaction process of a surface-modified carbon nanotube with alkali metal atoms (lithium, sodium, potassium) are presented. The sensory interaction of a modified carbon nanosystem with selected metal atoms was investigated, which proved the possibility of identifying these atoms using a nanotubular system that can act as a sensor device element. When interacting with alkali metal atoms in the “СNT – NO2” complex, the number of major carriers increases due to the transfer of electron density from metal atoms to the modified CNTs. The results presented in this paper were obtained using the molecular cluster model and the DFT calculation method with the exchange-correlation functional B3LYP (valence split basis set 6-31G).","PeriodicalId":13355,"journal":{"name":"Image Journal of Advanced Materials and Technologies","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74471501","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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