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Poly(Siloxane–Propylene Oxide–Urethane–Ureas) Based on Cycloaliphatic Diisocyanates: Synthesis and Properties 基于环脂肪族二异氰酸酯的聚硅氧烷-环氧丙烷-聚氨酯-脲类化合物的合成及性能研究
ИНЭОС OPEN Pub Date : 2023-10-29 DOI: 10.32931/io2229a
L. V. Filimonova, G. G. Nikiforova, M. I. Buzin, E. S. Afanasyev, K. L. Boldyrev, Z. S. Klemenkova, R. U. Takazova, E. S. Trankina, D. A. Khanin, A. M. Muzafarov
{"title":"Poly(Siloxane–Propylene Oxide–Urethane–Ureas) Based on Cycloaliphatic Diisocyanates: Synthesis and Properties","authors":"L. V. Filimonova, G. G. Nikiforova, M. I. Buzin, E. S. Afanasyev, K. L. Boldyrev, Z. S. Klemenkova, R. U. Takazova, E. S. Trankina, D. A. Khanin, A. M. Muzafarov","doi":"10.32931/io2229a","DOIUrl":"https://doi.org/10.32931/io2229a","url":null,"abstract":"New network poly(siloxane–propylene oxide–urethane–ureas) based on α,ω-bis[(3-aminopropyl)diethoxy]oligodimethylsiloxanes, oligo(propylene oxide), and cycloaliphatic diisocyanates are synthesized. The resulting polymers are studied by differential scanning calorimetry and thermogravimetric analysis; their stress–strain characteristics are elucidated. These polymers are found to feature microphase separation and, consequently, two glass transition temperatures, defined by the chemical structures of the microphases. It is shown that an increase in the molecular weight and mass content of siloxane blocks leads to a decrease in the elastic modulus and tensile strength.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"28 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136135382","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}
引用次数: 0
Regioselectivity of the Radical Cation Recombination in the Aniline Polymerization 苯胺聚合中自由基阳离子重组的区域选择性
ИНЭОС OPEN Pub Date : 2023-10-29 DOI: 10.32931/io2231a
A. V. Soldatova, I. Yu. Vorobev, Y. O. Mezhuev
{"title":"Regioselectivity of the Radical Cation Recombination in the Aniline Polymerization","authors":"A. V. Soldatova, I. Yu. Vorobev, Y. O. Mezhuev","doi":"10.32931/io2231a","DOIUrl":"https://doi.org/10.32931/io2231a","url":null,"abstract":"The regioselectivity of the fast stages of the aniline polymerization mechanism is considered. Using the AM1 method, the approaching of the radical cation of an aniline trimer to the aniline radical cation with chloride counterions, as well as the radical cations of the monomer to each other is simulated. It is shown that on passing from the recombination of the aniline radical cations with each other to the recombination of the aniline radical cations with the radical cations of an aniline trimer, the main approaching direction changes from C/N to N/N, which is followed by the semidine rearrangement. The high para-selectivity of the aniline polymerization is explained and the ratio of the rate constants of various recombination routes of the radical cations is evaluated.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"301 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136158047","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}
引用次数: 0
Synthesis of Polyamide-Imides by the Interaction of Terephthaloyl Chloride and 3,3',4,4'-Diphenyl Ether Tetracarboxylic Acid Dianhydride with Various Diamines 对苯二酰氯和3,3′，4,4′-二苯基醚四羧酸二酐与各种二胺的相互作用合成聚酰胺-亚胺
ИНЭОС OPEN Pub Date : 2023-10-29 DOI: 10.32931/io2226a
O. N. Zabegaeva, M. A. Cherepkova, D. A. Sapozhnikov
{"title":"Synthesis of Polyamide-Imides by the Interaction of Terephthaloyl Chloride and 3,3',4,4'-Diphenyl Ether Tetracarboxylic Acid Dianhydride with Various Diamines","authors":"O. N. Zabegaeva, M. A. Cherepkova, D. A. Sapozhnikov","doi":"10.32931/io2226a","DOIUrl":"https://doi.org/10.32931/io2226a","url":null,"abstract":"The effect of temperature, the order and duration of the interaction of terephthaloyl chloride (0.5 mol) and 3,3',4,4'-diphenyl ether tetracarboxylic acid dianhydride (0.5 mol) with 9,9-bis(4-aminophenyl)fluorene or 2,2'-bis(trifluoromethyl)benzidine (1.0 mol) in NMP on the properties of the resulting polyamide-imides was studied. The molecular weights and yields of the resulting polymers were shown to vary in a wide range (Mw = 64–438 kDa, yields 85–97%) and depend on the reaction conditions. The polyamide-imides obtained possess high heat resistance (Tg = 260–360 °C), thermal stability (T10% ~ 500 °C) and form high-strength films (σ = 122–160 MPa, E = 1.3–1.9 GPa, ε = 9–30%).","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136157973","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}
引用次数: 0
On the Conversion of CO2 to Methanol: Challenges and Possible Solutions. Highlights 二氧化碳转化为甲醇:挑战和可能的解决方案。突出了
ИНЭОС OPEN Pub Date : 2023-10-29 DOI: 10.32931/io2230r
None Z. B. Shifrina, None V. Yu. Doluda, None N. V. Kuchkina, None S. A. Sorokina
{"title":"On the Conversion of CO2 to Methanol: Challenges and Possible Solutions. Highlights","authors":"None Z. B. Shifrina, None V. Yu. Doluda, None N. V. Kuchkina, None S. A. Sorokina","doi":"10.32931/io2230r","DOIUrl":"https://doi.org/10.32931/io2230r","url":null,"abstract":"The state-of-the-art and prospects of carbon dioxide hydrogenation to methanol via heterogeneous catalysts are highlighted. The main focus is on various catalysts including metals, metal oxides, and intermetallic compounds. The current efforts are directed to the development of catalytic structures that allow for the tuning of the catalyst composition and modulation of surface structures and potentially provide promising catalytic performance.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"30 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136157080","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}
引用次数: 0
Mixtures of Heterocycles and Iodine as the Catalysts for the Formation of Organic Carbonates from Epoxides and CO2 杂环和碘的混合物作为环氧化物和CO2生成有机碳酸盐的催化剂
ИНЭОС OPEN Pub Date : 2023-10-12 DOI: 10.32931/io2227a
S. E. Lyubimov, P. V. Cherkasova
{"title":"Mixtures of Heterocycles and Iodine as the Catalysts for the Formation of Organic Carbonates from Epoxides and CO2","authors":"S. E. Lyubimov, P. V. Cherkasova","doi":"10.32931/io2227a","DOIUrl":"https://doi.org/10.32931/io2227a","url":null,"abstract":"Combinations of a series of nitrogen-containing heterocycles with iodine were tested as the catalysts for the synthesis of cyclic carbonates from epoxides and CO2. It is shown that the systems containing aliphatic substituents are more efficient, the presence of a free NH group has a beneficial effect on the conversion, and the systems with two or more nitrogen atoms are more active.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135970114","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}
引用次数: 0
Facile Two-Step Synthesis of Isoquinolones from Benzoic Acids and Alkynes and Their Comparative Photoluminescent Study vs Isocoumarins 苯甲酸和炔基二步法合成异喹诺酮类药物及其与异香豆素的比较发光研究
ИНЭОС OPEN Pub Date : 2023-10-12 DOI: 10.32931/io2228a
V. B. Kharitonov, M. A. Arsenov, A. A. Danshina, D. A. Loginov
{"title":"Facile Two-Step Synthesis of Isoquinolones from Benzoic Acids and Alkynes and Their Comparative Photoluminescent Study vs Isocoumarins","authors":"V. B. Kharitonov, M. A. Arsenov, A. A. Danshina, D. A. Loginov","doi":"10.32931/io2228a","DOIUrl":"https://doi.org/10.32931/io2228a","url":null,"abstract":"An efficient two-step protocol for the synthesis of isoquinolones (isoquinolin-1(2H)-ones) has been developed based on the C–H annulation of benzoic acids with alkynes followed by the treatment of the isocoumarins formed with ammonium formate. This approach was applied for the synthesis of naturally occurring isoquinolone siaminine A. A comparative study of the optical properties revealed that isoquinolones display stronger luminescence emission than isocoumarins.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969630","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}
引用次数: 0
Contact Mass in the Direct Synthesis of Alkoxysilanes. Raman Spectroscopy Study 直接合成烷氧基硅烷的接触质量。拉曼光谱研究
ИНЭОС OPEN Pub Date : 2023-05-30 DOI: 10.32931/io2218a
S. S. Bukalov, M. N. Temnikov, I. N. Krizhanovskiy, R. R. Aysin
{"title":"Contact Mass in the Direct Synthesis of Alkoxysilanes. Raman Spectroscopy Study","authors":"S. S. Bukalov, M. N. Temnikov, I. N. Krizhanovskiy, R. R. Aysin","doi":"10.32931/io2218a","DOIUrl":"https://doi.org/10.32931/io2218a","url":null,"abstract":"Raman spectroscopy was used to study the composition of contact masses (CMs) CuCl + Si obtained by different methods, which are utilized in the direct synthesis of alkoxysilanes. The CMs prepared by the classical method were shown to include copper oxides in a mixture with silicon and on the surface of metallic copper and Cu5Si intermetallide. Along with copper oxides, an active phase containing terminal Cu–Cl groups was also observed. In the case of mechanochemical synthesis, the formation of copper oxides was not observed. In view of the metallic conductivity of Cu3Si and Cu5Si, their direct identification using Raman spectra is not possible. All the mentioned copper-containing phases are involved in the reaction with alcohols and esters as catalysts. A difference between the two methods for obtaining CMs comes down to the presence or absence of a \"catalytic cocktail\", which significantly affects the parameters of the direct synthesis course.","PeriodicalId":490007,"journal":{"name":"ИНЭОС OPEN","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135692831","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}
引用次数: 0
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