Polymer Science, Series A最新文献

Influence of Iodine on the Structure of Poly(ε-caprolactone) 碘对聚ε-己内酯结构的影响

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-19 DOI: 10.1134/S0965545X26600110

E. S. Trofimchuk, N. I. Nikonorova, T. E. Grokhovskaya, A. V. Efimov, A. V. Bakirov, A. A. Puchkov, A. V. Bol’shakova, A. A. Dolgova, I. D. Kovtun, N. G. Sedush

{"title":"Influence of Iodine on the Structure of Poly(ε-caprolactone)","authors":"E. S. Trofimchuk, N. I. Nikonorova, T. E. Grokhovskaya, A. V. Efimov, A. V. Bakirov, A. A. Puchkov, A. V. Bol’shakova, A. A. Dolgova, I. D. Kovtun, N. G. Sedush","doi":"10.1134/S0965545X26600110","DOIUrl":"10.1134/S0965545X26600110","url":null,"abstract":"Changes in the structure and mechanical properties of poly(ε-caprolactone) films and fibers during their exposure to iodine vapors have been studied. The limit content of iodine in polymer samples has been reached in 15–18 h, being about 5% by weight. The value of the diffusion coefficient of I2 in semicrystalline samples of poly(ε-caprolactone) has been determined to be 1.7 × 10−11 cm2/s. It has been found that the process of iodine sorption into the polymer is accompanied by a gradual decrease in the value of the long period from 16 to 12 nm. Simultaneously, degree of crystallinity and strength of poly(ε-caprolactone) samples have been changed nonlinearly. It has been suggested that the changes in structural and mechanical parameters at the initial stages of iodine sorption are associated with the formation of a complex with charge transfer between iodine and the ester group of the polymer. At later stages, as a result of destruction of poly(ε-caprolactone) and decrease in the number-average molecular weight to 9 × 103, crystallization of the polymer has occurred in the amorphous layers, leading to an increase in the degree of crystallinity to 75–79% and sharp embrittlement of the samples.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560675","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

Critical Analysis of the Results of Applying the Laser Method for Determining the Parameters of the Composite Model of the Chain Termination Rate Coefficient 应用激光方法确定链终止率系数复合模型参数结果的关键分析

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-19 DOI: 10.1134/S0965545X26600109

A. N. Nikitin

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Preparation and Characterization of Highly Aligned Ferromagnetic PVDF/Fe3O4 Nanocomposite Fibrous Coating for Icephobic Applications 高排列铁磁PVDF/Fe3O4纳米复合纤维涂层的制备与表征

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-19 DOI: 10.1134/S0965545X26600043

Dilara Sadigova, Rasoul Moradi, Rasim Jabbarov

{"title":"Preparation and Characterization of Highly Aligned Ferromagnetic PVDF/Fe3O4 Nanocomposite Fibrous Coating for Icephobic Applications","authors":"Dilara Sadigova, Rasoul Moradi, Rasim Jabbarov","doi":"10.1134/S0965545X26600043","DOIUrl":"10.1134/S0965545X26600043","url":null,"abstract":"Unwanted icing on solid surfaces presents a critical challenge in a wide range of technological applications due to its detrimental effects on functional stability, energy efficiency, and overall system reliability. To address this phenomenon, multiple strategies have been explored, including the development of icephobic surface coatings, mechanical deicing techniques, thermal deicing systems, deployment of chemical deicing agents, and other advanced mitigation methods. In this study, novel nano-magnetically functionalized polyvinylidene fluoride (PVDF)/Fe3O4 fibrous films were engineered, exhibiting enhanced potential for use as icephobic materials. The electrospinning process was employed to fabricate highly aligned ferromagnetic nanofibers, with the incorporation of magnetite (Fe3O4) nanoparticles into the PVDF matrix leading to a significant increase in the electroactive β-phase fraction. The application of a directional magnetic field during electrospinning facilitated the production of uniformly oriented nanofiber architectures, enabling comprehensive evaluation of their morphological characteristics and anti-icing performance. Advanced characterization techniques, including wettability and icephobicity assessments, infrared spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), and scanning electron microscopy (SEM), were employed. The findings demonstrate that the precisely oriented nano-fibrous magnetic coatings exhibit superior icephobic performance, underscoring their suitability for next-generation anti-icing and deicing applications in critical technological systems.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560673","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

The Effect of the Silicon Shell of Magnetic Microparticles on the Viscoelastic Properties of Magnetoactive Silicone Elastomers and Their Response to an External Magnetic Field 磁性微粒的硅壳对磁活性有机硅弹性体粘弹性的影响及其对外加磁场的响应

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-19 DOI: 10.1134/S0965545X26600092

S. A. Kostrov, A. V. Dolmatov, E. Yu. Kramarenko

{"title":"The Effect of the Silicon Shell of Magnetic Microparticles on the Viscoelastic Properties of Magnetoactive Silicone Elastomers and Their Response to an External Magnetic Field","authors":"S. A. Kostrov, A. V. Dolmatov, E. Yu. Kramarenko","doi":"10.1134/S0965545X26600092","DOIUrl":"10.1134/S0965545X26600092","url":null,"abstract":"Magnetic microparticles with silicon shells of varying thickness have been obtained by modifying the surface of carbonyl iron. The structure and magnetic properties of the particles have been studied using scanning electron microscopy and vibrational magnetometry. The original and modified particles have been used as fillers to create magnetoactive elastomers based on polydimethylsiloxane. The concentration of magnetic particles in the magnetoactive elastomers varied from 40 to 80 wt %. Dynamic mechanical analysis showed that the initial shear storage moduli of the samples ranged from 5 to 25 kPa, increasing with increasing filler concentration and reaching values of approximately 400 kPa when a magnetic field was applied. At an equal particle volume fraction, the presence of the shell leads to a decrease in the storage modulus of the samples. In a magnetic field, samples with an equal fraction of iron but different thicknesses of the nonmagnetic shell demonstrate approximately the same storage moduli in the region of low particle concentration values; in the region of intermediate values, the presence of the shell leads to an increase in the storage modulus, and in the region of high values, to its decrease.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560674","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

Effect of Glass Fiber on the Mechanical Properties of Polyamide 6/Acrylonitrile Butadiene Styrene Compounds with Styrene-Ethylene/Butylene-Styrene 玻璃纤维对聚酰胺6/丙烯腈-丁二烯-苯乙烯/苯乙烯-乙烯复合材料力学性能的影响

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-12 DOI: 10.1134/S0965545X25601261

Le Duong, Le Minh Tai, Pham Thi Hong Nga

引用次数: 0

Thermodynamics of Dissolution of TOPAS Polycycloolefins in Chloroform TOPAS聚环烯烃在氯仿中的溶解热力学

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-12 DOI: 10.1134/S0965545X24601345

T. V. Terziyan, A. D. Vorobyeva, E. D. Kuznetsova, L. V. Adamova, A. P. Safronov

{"title":"Thermodynamics of Dissolution of TOPAS Polycycloolefins in Chloroform","authors":"T. V. Terziyan, A. D. Vorobyeva, E. D. Kuznetsova, L. V. Adamova, A. P. Safronov","doi":"10.1134/S0965545X24601345","DOIUrl":"10.1134/S0965545X24601345","url":null,"abstract":"The thermodynamic functions (Gibbs free energy, enthalpy, and entropy of mixing) of TOPAS polycycloolefins (ethylene–norbornene copolymers) in chloroform at 298 K have been determined using microcalorimetry and isothermal equilibrium sorption of solvent vapor. TOPAS-5013 and TOPAS-8007 copolymers with norbornene contents of 46 and 35 mol%, respectively, have been studied. The concentration dependences of the thermodynamic dissolution functions have been examined for samples obtained by various methods: pressed commercial pellets and copolymer films cast from chloroform solutions. Thermodynamic modeling was used to calculate the Flory–Huggins enthalpy parameter and parameters characterizing the nonequilibrium state of the polymer glass. It has been shown that intermolecular interaction with chloroform is characterized by a Flory–Huggins enthalpy parameter of 0.25 ± 0.04 and is almost independent of the copolymer composition and the film fabrication method. At the same time, the proportion of metastable vacancies as a parameter of the glassy structure depends on both factors. The degree of nonequilibrium of the glassy state of TOPAS copolymers decreases with decreasing norbornene content in the copolymer chain and in the case of solvent-based film casting.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388648","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

Effect of Molecular Weight Characteristics on the Supramolecular Structure and Mechanical Properties of Polyethylene Synthesized on a VCl3-Based Catalyst 分子量特征对vcl3基催化剂合成聚乙烯超分子结构和力学性能的影响

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-12 DOI: 10.1134/S0965545X25601224

S. S. Gusarov, O. I. Kudinova, I. A. Maklakova, A. N. Zhigach, A. V. Gorshkov, A. A. Gulin, T. A. Ladygina, V. G. Grinev, L. A. Novokshonova

{"title":"Effect of Molecular Weight Characteristics on the Supramolecular Structure and Mechanical Properties of Polyethylene Synthesized on a VCl3-Based Catalyst","authors":"S. S. Gusarov, O. I. Kudinova, I. A. Maklakova, A. N. Zhigach, A. V. Gorshkov, A. A. Gulin, T. A. Ladygina, V. G. Grinev, L. A. Novokshonova","doi":"10.1134/S0965545X25601224","DOIUrl":"10.1134/S0965545X25601224","url":null,"abstract":"The effect of molecular weight characteristics of high-density polyethylenes in a wide molecular weight range from ultrahigh to low molecular (polyethylene, close to the brittleness threshold), as well a reactor polymer composite ultrahigh-molecular-weight PE–HDPE, which were synthesized in the presence of a heterogeneous catalyst based on VCl3, on the structural parameters and deformation–strength properties of polyethylene was studied. It was shown that the supramolecular structure parameters and deformation–strength properties of the synthesized polyethylenes correlate with their molecular weight characteristics. Polymers with a MW lower than that of ultrahigh-molecular-weight PE and a reactor polymer blend ultrahigh-molecular-weight PE/HDPE are characterized by bimodal MWDs with a wide Mw/Mn. With decreasing MW, the proportion of a high-molecular-weight fraction decreases. As a result of structural changes, the lamellar long period Lp decreases due to the thinning of the intercrystalline amorphous gap La, which increases the plasticity of the material and decreases its strength.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388650","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

The Effect of Magnetic Field on the Rheological Properties of Magnetic Fluids 磁场对磁流体流变特性的影响

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-03-12 DOI: 10.1134/S0965545X25601273

S. A. Vshivkov, E. V. Rusinova, R. T. Omarov

引用次数: 0

Preparation of Hollow Fibers from Solutions of AB-poly(benzimidazole) in Phosphoric Acid ab -聚苯并咪唑在磷酸溶液中制备中空纤维

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-02-17 DOI: 10.1134/S0965545X25601066

A. F. Vashchenko, L. A. Varfolomeeva, Ya. V. Golubev, T. N. Rokhmanka, A. Yu. Alent’ev, I. I. Ponomarev, V. G. Kulichikhin

{"title":"Preparation of Hollow Fibers from Solutions of AB-poly(benzimidazole) in Phosphoric Acid","authors":"A. F. Vashchenko, L. A. Varfolomeeva, Ya. V. Golubev, T. N. Rokhmanka, A. Yu. Alent’ev, I. I. Ponomarev, V. G. Kulichikhin","doi":"10.1134/S0965545X25601066","DOIUrl":"10.1134/S0965545X25601066","url":null,"abstract":"Continuous hollow fibers have been obtained for the first time from solutions of poly(2,5(6)-benzimidazole) in phosphoric acid. The rheological behavior of the solutions has been studied, and the kinetics of precipitation of the dope solution with water and 40% NaOH solution has been investigated. It has been shown that water is a soft precipitant, whereas the concentrated alkali leads to hard coagulation and the formation of vacuole defects. The operating parameters of the fiber spinning, such as the ratio between the volumetric flow rate of the internal precipitant to the flow rate of the polymer solution and the nature of the internal precipitant have a decisive influence on the morphology of the resulting fibers. As a result, a laboratory technology for spinning of hollow fibers of poly(2,5(6)-benzimidazole) with a monolithic and asymmetric structure has been elaborated, their thermal properties have been investigated, the residual solvent content in the fiber has been estimated, and the value of the limiting oxygen index has been determined. It has been shown that the hollow fibers of poly(2,5(6)-benzimidazole) have a great potential for use in high-temperature membrane separation.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"67 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339782","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

The Effect of Aramid Fiber Powder Addition on the Performance of PES/AF Laser-Sintered Components 芳纶纤维粉末的加入对PES/AF激光烧结部件性能的影响

IF 1.1 4区化学

Polymer Science, Series A Pub Date : 2026-02-17 DOI: 10.1134/S0965545X25601157

Hui Chen, Mingxiao Lu, Jiayu Zhang, Bowen Zhang

引用次数: 0