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Polymer Science, Series B最新文献

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Synthesis and Characterization of Epoxy/Phenol Thermosets from Bis-azomethine Based Phenolics as Light Emissive Adhesives 利用双氮甲烷基苯酚合成环氧/苯酚热固性材料并确定其特性，将其用作光发射粘合剂
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-05-31 DOI: 10.1134/S1560090424600190
Shababuddin, Umme Kalsoom, Naila Khalid, Ahtaram Bibi
{"title":"Synthesis and Characterization of Epoxy/Phenol Thermosets from Bis-azomethine Based Phenolics as Light Emissive Adhesives","authors":"Shababuddin,&nbsp;Umme Kalsoom,&nbsp;Naila Khalid,&nbsp;Ahtaram Bibi","doi":"10.1134/S1560090424600190","DOIUrl":"10.1134/S1560090424600190","url":null,"abstract":"<p>Two novel curing agents <i>N</i>-((4-(12-(4-(<i>o</i>-hydroxyphenylimino) methyl)phenoxy)dodecanyl-oxy)benzylidene)-2-hydroxybenzenamine) and <i>N</i>-((4-(12-(4-(<i>p</i>-hydroxyphenylimino)methyl)phenoxy)-dodecanyloxy) benzylidene)-4-hydroxybenzenamine) were synthesized and characterized by FTIR and NMR spectral analysis. A series of novel polymers were obtained via curing reaction of epoxy resin. The characterization of the thermosets was performed by FTIR spectral analysis. The photo-physical properties of the synthesized thermosets were evaluated by UV–Vis and photoluminescence spectral analyses. All the thermosets absorbed in the UV region (271–281 nm), which is attributed to the CH=N in conjugation with phenol moieties, incorporated into polymer network. Thermoset based on the synthesized curing agents emitted light in the blue region, which is attributed to the azomethine linkage in polymeric thermoset. Thermal stability and light emissive properties of the new polymer systems suggested their future use as a blue light emissive, thermally resistant adhesives.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 1","pages":"43 - 50"},"PeriodicalIF":1.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141196902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Formation of Composite Polymer Photonic Crystals and Study of Their Properties by Optical Spectroscopy Methods 复合聚合物光子晶体的形成及其光学光谱学方法研究
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-05-31 DOI: 10.1134/S1560090424600335
N. N. Shevchenko, O. D. Iakobson, E. M. Ivan’kova, A. V. Sel’kin
{"title":"Formation of Composite Polymer Photonic Crystals and Study of Their Properties by Optical Spectroscopy Methods","authors":"N. N. Shevchenko,&nbsp;O. D. Iakobson,&nbsp;E. M. Ivan’kova,&nbsp;A. V. Sel’kin","doi":"10.1134/S1560090424600335","DOIUrl":"10.1134/S1560090424600335","url":null,"abstract":"<p>Monodisperse polymer particles of the core–shell type were produced using sequential emulsion and seed emulsion polymerization methods. The structure of the surface layer of the particles was studied using scanning electron microscopy. It has been established that sequential emulsion polymerization makes it possible to obtain particles with the lowest dispersity values of their diameter. The introduction of methyl methacrylate both at the stage of core synthesis and during the formation of the shell leads to the formation of spherical particles with a smooth surface layer. Based on such particles, films with pronounced properties of photonic crystals were obtained, and their Bragg reflection spectra in polarized light were studied.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 1","pages":"79 - 88"},"PeriodicalIF":1.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141191859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Features of Synthesis of Graft Copolymers of Chitosan and Acrylic Acid 壳聚糖和丙烯酸接枝共聚物的合成特点
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-05-31 DOI: 10.1134/S1560090424600165
V. O. Kudyshkin, Z. M. Abrarova, N. I. Bozorov, U. U. Zhumartova, M. M. Usmanova, N. Sh. Ashurov, S. Sh. Rashidova
{"title":"Features of Synthesis of Graft Copolymers of Chitosan and Acrylic Acid","authors":"V. O. Kudyshkin,&nbsp;Z. M. Abrarova,&nbsp;N. I. Bozorov,&nbsp;U. U. Zhumartova,&nbsp;M. M. Usmanova,&nbsp;N. Sh. Ashurov,&nbsp;S. Sh. Rashidova","doi":"10.1134/S1560090424600165","DOIUrl":"10.1134/S1560090424600165","url":null,"abstract":"<p>Graft copolymers of chitosan with acrylic acid of three-dimensional structure have been synthesized. An increase in the concentration of the polysaccharide helps to accelerate the structure formation of copolymer macromolecules during the synthesis. It has been shown that one of the reasons for this effect is a local increase in the concentration of acrylic acid in the chain growth zone due to the formation of hydrogen bonds between the monomer and the polysaccharide. The graft copolymers have been characterized by IR and UV spectroscopy, AFM, and X-ray diffraction and can be used as highly swelling superabsorbents.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 1","pages":"51 - 58"},"PeriodicalIF":1.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extraction of Sericin from Cocoons of the Silkworm Bombyx Mori, Its Characteristics, and a Dietary Supplement on Its Basis to Prevent Diabetes Mellitus 从桑蚕的蚕茧中提取丝胶、丝胶的特性及其预防糖尿病的膳食补充剂
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-05-31 DOI: 10.1134/S1560090424600268
A. A. Sarymsakov, S. S. Yarmatov, Kh. E. Yunusov
{"title":"Extraction of Sericin from Cocoons of the Silkworm Bombyx Mori, Its Characteristics, and a Dietary Supplement on Its Basis to Prevent Diabetes Mellitus","authors":"A. A. Sarymsakov,&nbsp;S. S. Yarmatov,&nbsp;Kh. E. Yunusov","doi":"10.1134/S1560090424600268","DOIUrl":"10.1134/S1560090424600268","url":null,"abstract":"<p>A dietary supplement for the prevention of diabetes mellitus was obtained based on sericin separated from the cocoons of the silkworm <i>Bombyx mori</i>. By hydrolyzing <i>Bombyx mori</i> silkworm threads in an aqueous medium at a temperature of 110°C and a pressure of 0.143 MPa for 24 h, a sericin solution was separated. By evaporating the filtrate in a rotary evaporator, pure sericin powder with a molecular weight of 72 × 10<sup>3</sup> and a yield of 29.8% was obtained. Subsequent repeated hydrolysis of pure sericin powder with the indicated molecular weight in an aqueous medium at a temperature of 130°C and a pressure of 2.8 MPa for 120 min resulted in the isolation of sericin powder with a molecular weight of (5‒6) × 10<sup>3</sup>, containing free amino acids, with a yield of 18.6%. The amino acid composition, molecular weight, and functional groups of sericin were determined using high-performance liquid chromatography, viscometry, and Fourier transform infrared spectroscopy. Sericin samples with different molecular weights were tested on rats with nutritional hyperglycemia. When sericin, containing free amino acids with a molecular weight of (5‒6) × 10<sup>3</sup>, was administered at a dose of 65 mg/kg twice a day, a decrease by 159.5% in blood sugar levels in the rats was registered after 30 days compared to the control group.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 1","pages":"89 - 96"},"PeriodicalIF":1.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141192020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alkene Polymerization with Catalysts Containing Ionic Complexes [2L·M@dibenzo-18-crown-6]+[TiCl5·L]– (L = CH3CN, M = Li+, K+) 含离子络合物 [2L-M@dibenzo-18-crown-6]+[TiCl5-L]- （L = CH3CN，M = Li+，K+）的催化剂的烯聚合反应
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-05-31 DOI: 10.1134/S1560090424600256
L. A. Rishina, Y. V. Kissin, S. S. Lalayan, V. G. Krasheninnikov, A. A. Zabolotnov, V. A. Tuskaev, S. Ch. Gagieva, B. M. Bulychev
{"title":"Alkene Polymerization with Catalysts Containing Ionic Complexes [2L·M@dibenzo-18-crown-6]+[TiCl5·L]– (L = CH3CN, M = Li+, K+)","authors":"L. A. Rishina,&nbsp;Y. V. Kissin,&nbsp;S. S. Lalayan,&nbsp;V. G. Krasheninnikov,&nbsp;A. A. Zabolotnov,&nbsp;V. A. Tuskaev,&nbsp;S. Ch. Gagieva,&nbsp;B. M. Bulychev","doi":"10.1134/S1560090424600256","DOIUrl":"10.1134/S1560090424600256","url":null,"abstract":"<p>The polymerization of ethylene and propylene and the copolymerization of ethylene with 1-octene with novel type of post-metallocene catalysts containing ionic complexes [2L·M@dibenzo-18-crown-6]<sup>+</sup> [TiCl<sub>5</sub>·L]<sup>–</sup> (L = CH<sub>3</sub>CN, M = Li, K) are studied. The binary activator Al(C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>Cl/Mg(C<sub>4</sub>H<sub>9</sub>)<sub>2</sub> at [Al] : [Mg] ~ 3 is used as a cocatalyst. A linear crystalline polyethylene, an almost fully amorphous, atactic polypropylene, and statistical ethylene-1-octene copolymers containing from 2 to 9 mol % 1-octene are synthesized. The copolymers exhibit a broad molecular-weight distribution and a nonuniform composition distribution like copolymers synthesized over classical Ziegler–Natta catalysts and many post-metallocene systems.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 1","pages":"1 - 10"},"PeriodicalIF":1.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 an Aliphatic Dianhydride Monomer and Its Colourless, Low Dielectric Constant Aliphatic Polyimides 脂肪族二酸酐单体及其无色、低介电常数脂肪族聚酰亚胺的合成
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-03-23 DOI: 10.1134/S1560090424701306
Pradip Kumar Tapaswi
{"title":"Synthesis of an Aliphatic Dianhydride Monomer and Its Colourless, Low Dielectric Constant Aliphatic Polyimides","authors":"Pradip Kumar Tapaswi","doi":"10.1134/S1560090424701306","DOIUrl":"10.1134/S1560090424701306","url":null,"abstract":"<p>An aliphatic dianhydride containing amide functionality (–NCOCH<sub>3</sub>), ethylenediamine-<i>N</i>,<i>N</i> '-disuccinic acid anhydride (EDSA) was synthesized via base catalyzed <i>N</i>-alkylation of aspartic acid with 1,2‑dibromoethane followed by dehydration of the <i>N</i>-alkylated product with Ac<sub>2</sub>O and pyridine. Four aliphatic polyimides (API) were prepared via two-step condensation polymerization of EDSA with four diamines (three straight chain aliphatic diamines and one alicyclic diamine). The polyimide film of EDSA with 4,4′-methylene bis(2-methyl cyclohexylamine) was almost colourless (cut of wavelength λ<sub>0</sub> = 312 nm and transmittance &gt; 90% in the range of 450–800 nm). <i>T</i><sub>10</sub> (temperature of 10% weight loss) of API were in the range of 417–457°C and <i>T</i><sub>g</sub> of 149–178°C. The API films exhibited low dielectric constants of 2.31–2.92 at 1 MHz.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"881 - 892"},"PeriodicalIF":1.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel Epoxy-Aryloxy Cyclotriphosphazenes with Reduced Functionality 功能减弱的新型环氧-芳氧基环三磷酸嗪
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-03-23 DOI: 10.1134/S1560090424600141
Yu. V. Bilichenko, Pham Van Thuan, D. V. Onuchin, R. S. Borisov, I. B. Sokol’skaya, V. V. Kireev
{"title":"Novel Epoxy-Aryloxy Cyclotriphosphazenes with Reduced Functionality","authors":"Yu. V. Bilichenko,&nbsp;Pham Van Thuan,&nbsp;D. V. Onuchin,&nbsp;R. S. Borisov,&nbsp;I. B. Sokol’skaya,&nbsp;V. V. Kireev","doi":"10.1134/S1560090424600141","DOIUrl":"10.1134/S1560090424600141","url":null,"abstract":"<p>Mixed hydroxy-aryloxy cyclotriphosphazenes have been synthesized via the interaction of hexachlorocyclotriphosphazene with a mixture of 4-allyl-2-methoxyphenol and diphenylolpropane (molar ratio 3.5 : 7.0). Their subsequent epoxidation with epichlorohydrin has afforded phosphazene-containing oligoepoxides with the phosphazene fraction of 50%. Optimal conditions for the synthesis of the composition-uniform phosphazene-containing oligoepoxides bearing one, two, and three epoxide groups in the phosphazene cycle have been elaborated. Such phosphazene-containing oligoepoxides can be cured with the curing agents common for the epoxy resins, to afford self-extinguishing compositions.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"746 - 754"},"PeriodicalIF":1.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of Nebula-like Polysiloxane/Silica Superhydrophobic Composite Microspheres Controlled by Density Method 用密度法制备星云状聚硅氧烷/二氧化硅超疏水复合微球
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-03-23 DOI: 10.1134/S156009042460013X
Xiaoling Huang, Bodong Wang, Yifan Liu, Le Liu, Wentong Yang, Yan Jiang, Hongwen Zhang
{"title":"Preparation of Nebula-like Polysiloxane/Silica Superhydrophobic Composite Microspheres Controlled by Density Method","authors":"Xiaoling Huang,&nbsp;Bodong Wang,&nbsp;Yifan Liu,&nbsp;Le Liu,&nbsp;Wentong Yang,&nbsp;Yan Jiang,&nbsp;Hongwen Zhang","doi":"10.1134/S156009042460013X","DOIUrl":"10.1134/S156009042460013X","url":null,"abstract":"<p>In this study, flower-shaped nano-silica was prepared through a calcination method, and then modified. Then using the method of free radical polymerization, and polysiloxane composite compounded with siloxane. The prepared composite microspheres combined the stability of polysiloxane with the unique surface morphology of flower-shaped nano-silica. The relative density of the composite material was controlled by the significant difference in density between siloxane microspheres and nano-silica. The structure and morphology of the composite microspheres were characterized and analyzed using FTIR, SEM, and other tests. The results showed successful compounding of siloxane and nano-silica, resulting in superhydrophobic polysiloxane/nano-SiO<sub>2</sub> composite microspheres with a water contact angle of 152°. The composite microspheres exhibited a nebula-like overall structure.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"955 - 962"},"PeriodicalIF":1.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and Characterization of Crosslinking Polyacrylate Latex Prepared by Soap-Free Emulsion Polymerization 无皂乳液聚合法制备的交联聚丙烯酸酯胶乳的制备与表征
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-03-23 DOI: 10.1134/S1560090424600074
Lijun Chen,  Zheqing Gong
{"title":"Preparation and Characterization of Crosslinking Polyacrylate Latex Prepared by Soap-Free Emulsion Polymerization","authors":"Lijun Chen,&nbsp; Zheqing Gong","doi":"10.1134/S1560090424600074","DOIUrl":"10.1134/S1560090424600074","url":null,"abstract":"<p>The cross-linking acrylic polymer latex based on methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, and hydroxyethyl acryloylurea was prepared by soap-free emulsion polymerization with sodium 2-acrylamido-2-methylpropanesulfonate and allyloxy alkyl polyoxyethylene ether ammonium sulfate (SR-10) used as the reactive emulsifiers. Glass transition temperature of the latex film prepared is 20°C. The average particle size of the latex is 64 nm and its dispersion index is 0.085. The optimum conditions of preparing the latex were found. In comparison with the conventional latex, the heat and water resistance of the resultant latex have been improved.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"836 - 841"},"PeriodicalIF":1.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140205713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 Absence of Gel Effect in Radical Ring-Opening Polymerization of Ketene Acetals 烯酮缩醛的自由基开环聚合中不存在凝胶效应
IF 1 4区 化学
Polymer Science, Series B Pub Date : 2024-03-23 DOI: 10.1134/S1560090423600225
M. Yu. Zaremski, E. E. Aliev, E. V. Pukhanova, N. S. Goulioukina, M. O. Zaitsev
{"title":"On the Absence of Gel Effect in Radical Ring-Opening Polymerization of Ketene Acetals","authors":"M. Yu. Zaremski,&nbsp;E. E. Aliev,&nbsp;E. V. Pukhanova,&nbsp;N. S. Goulioukina,&nbsp;M. O. Zaitsev","doi":"10.1134/S1560090423600225","DOIUrl":"10.1134/S1560090423600225","url":null,"abstract":"<p>A new kinetic type of gel effect suppression in radical polymerization is described. Ring-opening polymerization of ketene acetals is characterized by auto-deceleration in the course of the reaction rather than the auto-acceleration, as well as increased reaction rate order with respect to the monomer. These features are caused by low reactivity of ketene acetals, as a result of which the addition of primary radicals to the monomer is the rate-limiting step in the initiation reaction. This should lead, firstly, to termination of the growth radicals at the primary radicals, and secondly, to the increased rate order with respect to the monomer concentration and, accordingly, to a decrease in the polymerization rate with its consumption.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"755 - 759"},"PeriodicalIF":1.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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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