Polymer Science, Series B最新文献_第2页

Development of Polyethersulfones for Modification of Epoxy Resins

IF 1 4区化学

Polymer Science, Series B Pub Date : 2025-01-30 DOI: 10.1134/S1560090424601481

I. P. Storozhuk, D. P. Bulkatov, A. G. Khina, V. S. Buryakov, A. S. Kuleznev, M. A. Orlov

引用次数: 0

Regulation of Stereospecificity of Titanium–Magnesium Catalysts in Propylene Polymerization Reactions

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601341

A. N. Klyamkina, P. M. Nedorezova, L. A. Rishina, A. M. Aladyshev

引用次数: 0

Developing and Characterizing Microparticles with Multiple Dye Enclosures to Enhance Fluorescence Properties

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601389

Ehsan Sanattalab

{"title":"Developing and Characterizing Microparticles with Multiple Dye Enclosures to Enhance Fluorescence Properties","authors":"Ehsan Sanattalab","doi":"10.1134/S1560090424601389","DOIUrl":"10.1134/S1560090424601389","url":null,"abstract":"Cross-linking of polymer is a simple way to improve stability of dyes into a polymer matrix according to using in different application. In this study spherical poly(methacrylic acid-ethylene glycol dimethacrylate) microparticles consisting of curcumin, rhodamine B and crystal violet were synthesized by precipitation polymerization to obtained possible synergistic effect and Förster resonance energy transfer in a single platform. The synthesized microparticles were characterized using scanning electron microscopy, X-ray diffraction, fluorescence spectroscopy, dynamic light scattering, and differential scanning calorimetry. Microparticles containing curcumin and crystal violet showed 2.7 times higher intensity than microparticles containing curcumin and rhodamine B and 14 times higher fluorescence intensity compared to microparticles containing curcumin only. Also, the most unpredictable result belonged to the microparticles containing crystal violet and rhodamine B. It showed approximately 5 and 2 times higher fluorescence intensity compared to microparticles containing curcumin and rhodamine B and microparticles containing curcumin and crystal violet, respectively. This finding enabled us to design microparticles with minimum toxic effect due to low contents of rhodamine B for bioimaging applications with high sensitivity.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 4","pages":"561 - 569"},"PeriodicalIF":1.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581122","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

Binary Soil Ameliorants Composed of Synthetic Polyanion and Natural Humates

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601353

O. Novoskoltseva, I. Panova, K. Titkina, D. Sinelnikova, O. Yakimenko, D. Gruzdenko, A. Stepanov, A. Yaroslavov

{"title":"Binary Soil Ameliorants Composed of Synthetic Polyanion and Natural Humates","authors":"O. Novoskoltseva, I. Panova, K. Titkina, D. Sinelnikova, O. Yakimenko, D. Gruzdenko, A. Stepanov, A. Yaroslavov","doi":"10.1134/S1560090424601353","DOIUrl":"10.1134/S1560090424601353","url":null,"abstract":"Polymer-based soil ameliorants are considered effective tools to protect soil from wind and water erosion. In the article, five promising modern ameliorants were examined: hydrolyzed polyacrylonitrile (HYPAN, synthetic polyanion), two commercial humic products (potassium humates) and two binary mixtures composed of HYPAN and humates at 10/1 wt/wt ratio, with a special attention to their effects on soil structuring, anti-erosion and hydrophysical properties. The polymers were dissolved in water and the resulting aqueous formulations were 1) sprayed on the surface or 2) injected into the sandy loam soil. The obtained polymer-soil constructs were comprehensively tested for mechanical strength, aggregate composition, anti-erosion stability, water retention capacity and biocompatibility with the following main conclusions. When sprayed over the soil, the formulations penetrate the soil to a depth of 0.5 cm. Drying the soil with deposited polymers results in polymer-soil coatings with mechanical strength varied from 0.7–1.3 kg/cm2 for humates to 4.1–6.7 kg/cm2 for HYPAN-based formulations. HYPAN coatings provide a 100% soil resistance at an air flow speed of 72 km/h and only 5–7% loss of soil when re-watering. Treatment of soil with HYPAN-based formulations results in a higher water capacity, better retention of water and increased content of agronomically valuable aggregates 0.25–1 mm in size from 34 to 51 wt %. Addition of humates to HYPAN solutions stimulates plants growth. The results obtained are important to develop polymer ameliorants with anti-erosion, water-retaining and biostimulating properties.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 4","pages":"570 - 579"},"PeriodicalIF":1.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581123","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

Copolymers of Acrylamides and Acrylic Acid with Antiviral Activity

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601377

E. F. Panarin, O. N. Zhuravskaya, A. V. Sitko, E. N. Vlasova, A. A. Shtro

引用次数: 0

Synthesis of Ultrahigh Molecular Weight Polyethylenes with New Catalyst Based on Ti4+ Complex with a Tridentate Phenoxyimine Ligand

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601390

L. A. Rishina, Y. V. Kissin, S. S. Lalayan, V. G. Krasheninnikov, S. S. Gusarov, A. S. Zabolotnov, A. A. Gulin, V. A. Tuskaev, S. Ch. Gagieva, B. M. Bulychev

引用次数: 0

Comparison of Nanoreactor Efficiency for Peroxyoxalate Chemiluminescent Reaction in Aqueous Medium

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-12-23 DOI: 10.1134/S1560090424601365

E. O. Fomin, E. A. Iakimova, N. P. Iakimov, I. D. Grozdova, N. S. Melik-Nubarov

{"title":"Comparison of Nanoreactor Efficiency for Peroxyoxalate Chemiluminescent Reaction in Aqueous Medium","authors":"E. O. Fomin, E. A. Iakimova, N. P. Iakimov, I. D. Grozdova, N. S. Melik-Nubarov","doi":"10.1134/S1560090424601365","DOIUrl":"10.1134/S1560090424601365","url":null,"abstract":"The peroxyoxalate chemiluminescent reaction is an excellent source of excitation for photosensitizers used in theranostics for identification and targeting of tumor cells that produce elevated amounts of hydrogen peroxide. However, the substrates of peroxyoxalate chemiluminescent reaction, aromatic oxalates, are highly susceptible to hydrolysis in aqueous surroundings. Solubilization of oxalates in nanoreactors with a hydrophobic core significantly reduces their degradation by water. In this study, we compared for the first time the efficiency of the peroxyoxalate chemiluminescent reaction in emulsion and micellar nanoreactors. Two oxalates were studied herein, i.e. a highly active bis(2,4,5-trichloro-6-(pentyloxycarbonyl)phenyl) oxalate (CPPO) and nearly 15-fold less active but bioinspired tyrosine-based oxalate (BTEE-ox), which differed significantly in the pKa of the leaving phenolic group, cytotoxicity, and hydrophobicity. Encapsulation of both oxalates into emulsion nanoreactors increased stability of both oxalates approximately by two orders of magnitude as compared to a THF/water (4 : 1) homogeneous solution. However, the emulsion underwent colloidal destabilization due to Ostwald ripening. In contrast, polylactide-block-poly(ethylene glycol) micelles exhibited excellent colloidal stability and ensured low rate of oxalates hydrolysis. The chemiluminescence activity of BTEE-ox solubilized in micelles became even higher than that of CPPO indicating that solid nanoreactors influenced the peroxyoxalate chemiluminescent reaction efficiency.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 4","pages":"544 - 555"},"PeriodicalIF":1.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581124","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

Crosslinking Kinetics for Blends of Polyisoprene and MQ Copolymers

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-10-29 DOI: 10.1134/S1560090424601213

M. V. Mironova, I. B. Meshkov, G. A. Shandryuk, V. G. Kulichikhin, A. M. Muzafarov

引用次数: 0

Structural Evolution of Phenolic Fibers during the Forming Process

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-10-29 DOI: 10.1134/S1560090424601201

Keke Li, Mingli Jiao, Muen Yang, Yangyang Li, Keke Ma, Wei Pan, Kai Yang

{"title":"Structural Evolution of Phenolic Fibers during the Forming Process","authors":"Keke Li, Mingli Jiao, Muen Yang, Yangyang Li, Keke Ma, Wei Pan, Kai Yang","doi":"10.1134/S1560090424601201","DOIUrl":"10.1134/S1560090424601201","url":null,"abstract":"This article focused on preparing high-ortho phenolic resin using phenol and formaldehyde as precursors and using zinc acetate as catalysts. High ortho-phenolic fibers were produced through wet spinning, solution thermal curing (STC), microwave thermal curing (MTC), and heat treatment techniques. The structural and mechanical properties of the fibers were evaluated using gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), micro-infrared imaging (Micro-FTIR), nuclear magnetic resonance (NMR), thermogravimetric analysis (TG), mechanical testing and scanning electron microscopy (SEM). The high-ortho phenolic fibers experienced a reduction in hydroxymethyl groups and an augmentation in methylene groups upon microwave curing, which enhanced cross-linking. Through the escalation of solution cross-linking bath and heat treatment, the hydroxymethyl groups within the phenolic molecules underwent a reaction to form methylene groups. Methylene groups facilitated the increase of intramolecular crosslinking degree, thereby enhancing the stability of the fibers structure. As a result, the mechanical properties of the fibers were improved and reached an optimal level under microwave heat curing, with an elongation of 3.1% and a tensile strength of 107 MPa.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 4","pages":"504 - 513"},"PeriodicalIF":1.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580933","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

An Alkenyl Polyethylene Glycol Binder: Room Temperature Curing Properties via Nitrile Oxide, Thermodynamics and Kinetics Study 烯基聚乙二醇粘合剂：通过氧化腈的室温固化特性、热力学和动力学研究

IF 1 4区化学

Polymer Science, Series B Pub Date : 2024-10-29 DOI: 10.1134/S1560090424601195

Yonglin Lei, Jichuan Huo

{"title":"An Alkenyl Polyethylene Glycol Binder: Room Temperature Curing Properties via Nitrile Oxide, Thermodynamics and Kinetics Study","authors":"Yonglin Lei,  Jichuan Huo","doi":"10.1134/S1560090424601195","DOIUrl":"10.1134/S1560090424601195","url":null,"abstract":"Reducing the stress defects of grain caused by high temperature curing is of great significance to the safety and performance of propellant. Here, a series of alkenyl polyethylene glycol copolymers (APEG) were designed and synthesized using polyethylene glycol (PEG) samples and allyl glycidyl (AGE) and glycidol as raw materials. The APEG copolymers were cured at room temperature with nitrile oxide prepared in situ from p-benzenedinitrile oxide and triethylamine. The chemico-physical properties of the precursors and cured systems were discussed. The results showed that the tensile strength, the elongation at break and hardness decreased from the case of PEG 400 to the case of PEG 4000 and increased from the case of PEG 4000 to the case of PEG 6000. And the elongation at break of the cured APEGs decreased, the tensile strength increased with the increase of curing agent’s contents. The in situ IR of this cured system was analyzed and k = 0.1888 g/(mol min) at 27°C. The initial thermal decomposition of this cured system was also discussed. The activation energy and reaction order were calculated respectively as 163.886 kJ/mol and 0.96. The results suggested that the prepared binder could be cured rapidly at room temperature and had greater heat release during high temperature decomposition. Based on the excellent room curing performance and great heat release of this work, The APEG copolymers provide a feasible strategy to solve the problems caused by the high temperature curing.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"66 4","pages":"531 - 543"},"PeriodicalIF":1.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581336","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