Polymer Science, Series A最新文献_第5页

Characterization of Thermal Conductivity of Cellulose Acetate/Nano-SiO2 Electrospun Nanofiber Composites for Energy-Saving Using an Oxygen-Enriched Method 富氧法表征醋酸纤维素/纳米二氧化硅静电纺节能纳米纤维复合材料的导热性能

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-11 DOI: 10.1134/S0965545X2460087X

Negin Rastegar, Farideh Golbabaei, Saba Kalantary, Parvaneh Sangpour, Kamal Azam, Mohammad Reza Monazzam

{"title":"Characterization of Thermal Conductivity of Cellulose Acetate/Nano-SiO2 Electrospun Nanofiber Composites for Energy-Saving Using an Oxygen-Enriched Method","authors":"Negin Rastegar, Farideh Golbabaei, Saba Kalantary, Parvaneh Sangpour, Kamal Azam, Mohammad Reza Monazzam","doi":"10.1134/S0965545X2460087X","DOIUrl":"10.1134/S0965545X2460087X","url":null,"abstract":"Herein, the SiO2 nanoparticles were applied to decrease the thermal conductivity of cellulose acetate (CA) nanofibers via electrospinning and the oxygen-enriched method. Hence, solutions of CA and CA/SiO2 were made by acetone/dimethylacetamide (2 : 1) with oxygen enriching and Helium gas. The nanofiber’s morphology and chemical structures were studied by SEM and FTIR, respectively. Finally, the media’s thermal conductivities were calculated using the two-plate Togmeter device test method based on BS 4745:2005, and the media’s tensile strength features were evaluated under the ASTM D638-10 standard. According to SEM images, SiO2 nanoparticles incredibly covered the whole surfaces of CA nanofibers in the CA/SiO2 medium in a cloud shape. FTIR vibration spectrums confirmed the siloxane bands vibrated at 475/75 cm–1 in the CA/SiO2 mat. Moreover, the thermal conductivity of the CA and CA/SiO2 sheets were 0.1 W/(m K) with 0.225 ± 0.005 mm thickness and 0.044 W/(m K) with 0.461 ± 2.88 mm thickness, respectively. Additionally, the CA medium had 0.5 ± 0.28 MPa tensile stress at 2.57 ± 1.25% tensile strain and the CA/SiO2 membrane had 0.561 ± 0.057 MPa at 1.81 ± 0.939%. Hence, the CA/SiO2 nanocomposite medium has a super low thermal conductivity with good mechanical properties. Therefore, the characterization of the thermal conductivity of cellulose Acetate/nano-SiO2 electrospun nanofiber composites for energy-saving, using an Oxygen-enriched method was completely successful.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 3","pages":"411 - 420"},"PeriodicalIF":1.0,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790348","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}

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Chlorosulfonated Polyethylene: Structural Features and Physicochemical Properties 氯磺化聚乙烯：结构特征和理化性质

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-11 DOI: 10.1134/S0965545X24600935

A. A. Seleznev, G. V. Stepanov, S. A. Safronov, T. P. Aleynikova, V. A. Navrotskiy

引用次数: 0

Novel Poly(N,N-dimethylaminoethylmethacrylate)-Based Amphiphilic Copolymers for Stabilization of Soil Materials 新型聚（N，N-二甲氨基甲基丙烯酸乙酯）基两亲性共聚物稳定土壤材料

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-11 DOI: 10.1134/S0965545X24600881

A. V. Plutalova, N. S. Serkhacheva, R. V. Toms, N. I. Prokopov, Yu. G. Bogdanova, E. A. Lysenko, E. V. Chernikova

{"title":"Novel Poly(N,N-dimethylaminoethylmethacrylate)-Based Amphiphilic Copolymers for Stabilization of Soil Materials","authors":"A. V. Plutalova, N. S. Serkhacheva, R. V. Toms, N. I. Prokopov, Yu. G. Bogdanova, E. A. Lysenko, E. V. Chernikova","doi":"10.1134/S0965545X24600881","DOIUrl":"10.1134/S0965545X24600881","url":null,"abstract":"RAFT polymerization was applied for the synthesis of hydrophilic poly(N,N-dimethylaminoethyl methacrylate) and random copolymers of N,N-dimethylaminoethyl methacrylate, containing 5 or 10 mol % of hydrophobic monomers methyl acrylate, methyl methacrylate, or butyl acrylate. The influence of chemical nature of hydrophobic comonomer and the copolymer composition on physico-chemical properties of polymers and their ability to strengthen friable (bulk) materials like quartz sand, clay, or limestone was systematically studied. It is shown that synthesized copolymers have relatively low glass transition temperatures, form aggregatively stable molecular solutions in water in a wide range of pH values, and have a pronounced surface activity, while their dried films demonstrate water-repellent properties. It is found that amphiphilic copolymers with a small content of hydrophobic comonomer units are much more effective as stabilizers of soils (bulk materials) in terms of mechanical strength and durability than the original hydrophilic homopolymer.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 3","pages":"363 - 375"},"PeriodicalIF":1.0,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790375","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 Magnetic Field on the Structure and Sorption Properties of Films Based on Hydroxyethyl Cellulose and Carbon Nanotubes 磁场对羟乙基纤维素-碳纳米管膜结构和吸附性能的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-11 DOI: 10.1134/S0965545X24600923

S. A. Vshivkov, E. V. Rusinova, A. G. Galyas

引用次数: 0

Influence of Rolling Speed on the Mechanism of Adiabatic Shear Band Formation and Plastic Flow in Polyethylene Terephthalate Films 轧制速度对聚对苯二甲酸乙二醇酯薄膜绝热剪切带形成和塑性流动机理的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-29 DOI: 10.1134/S0965545X24600832

S. L. Bazhenov, I. V. Sosnovskii, A. S. Kechek’yan, A. L. Volynskii

{"title":"Influence of Rolling Speed on the Mechanism of Adiabatic Shear Band Formation and Plastic Flow in Polyethylene Terephthalate Films","authors":"S. L. Bazhenov, I. V. Sosnovskii, A. S. Kechek’yan, A. L. Volynskii","doi":"10.1134/S0965545X24600832","DOIUrl":"10.1134/S0965545X24600832","url":null,"abstract":"Amorphous polyethylene terephthalate was oriented by rolling at room temperature on laboratory rollers. During rolling, a system of shear bands appeared, which was observed using crossed polarizers. The effect of rolling speed and degree on the shear band system was studied. At low rolling speeds (6.5 mm/min), plastic flow occurs through numerous fine shear bands. At higher speeds (above 1300 mm/min), a single serrated deformation zone is observed. This is explained by thermal softening of the polymer and a decrease in yield strength, which suppresses the formation of competing shear bands. At intermediate rolling speeds, two, three, four, or five serrated zones appear, spaced approximately equally. Increasing the degree of rolling leads to an increase in the number of serrated shear zones and homogenization of the flow process. The temperature in the shear bands was estimated, and it was shown that very slight heating of the bands is sufficient to prevent the formation of multiple fine shear bands. A significant difference was noted between the adiabatic deformation of the sample and the adiabatic shear bands.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 3","pages":"327 - 335"},"PeriodicalIF":1.0,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790349","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

Interpolyelectrolyte Complexes of Amphiphilic Polymers: The Case when a Synthesis Sequence Affects Properties 两亲性聚合物的多电解质间配合物：合成顺序影响性质的情况

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-29 DOI: 10.1134/S0965545X24600856

P. A. Fetin, A. E. Minov, I. M. Zorin

引用次数: 0

Effect of Composition of Nonionic and Cationic Copolymers of Alkoxyoligo(ethylene glycol) Methacrylates and Dodecyl Methacrylate on Their Properties in Solutions 烷基氧基低聚（乙二醇）甲基丙烯酸酯和甲基丙烯酸十二酯非离子和阳离子共聚物组成对溶液性能的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-29 DOI: 10.1134/S0965545X24600844

D. M. Kamorin, O. A. Kazantsev, A. S. Simagin, D. V. Orekhov, M. V. Savinova, I. R. Arifullin, A. P. Sivokhin

引用次数: 0

Mobility of Multiply Protonated Poly(ethylene oxide)s in Helium at Different Electric Field Strengths. Molecular Dynamics Simulation of Ion Drift 不同电场强度下多重质子化聚环氧乙烷在氦气中的迁移率。离子漂移的分子动力学模拟

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-16 DOI: 10.1134/S0965545X24600765

S. A. Dubrovskii, N. K. Balabaev

{"title":"Mobility of Multiply Protonated Poly(ethylene oxide)s in Helium at Different Electric Field Strengths. Molecular Dynamics Simulation of Ion Drift","authors":"S. A. Dubrovskii, N. K. Balabaev","doi":"10.1134/S0965545X24600765","DOIUrl":"10.1134/S0965545X24600765","url":null,"abstract":"The drift of multiply protonated poly(ethylene oxide) chains in helium in electrostatic fields of various strengths is simulated using the molecular dynamics method. The simulation results are compared with the predictions of the kinetic theory of ion mobility, which relates the effect of increasing field strength to increasing ion temperature. As would be expected, the internal temperature of the ion Tion increases with increasing random kinetic energy received by the ion from the field. However, it grows more slowly than expected in the two-temperature theory. Ion mobility is calculated as a function of the field strength E at constant gas temperature T (300 K) and as a function of T at low E. The results of these two series of calculations are compared at the same internal ion temperatures. The results coincide at Tion close to T. At high ion temperatures, they diverge somewhat (by about 8% at Tion = 600 K), which does not agree with the theory. Conformations and sizes of drifting ions, as well as their collision cross sections, calculated from the mobility, indicate that an increase in the number of attached protons leads to unfolding of the polymer chain. This effect is in satisfactory agreement with the Rayleigh criterion for the stability of a charged drop. An increase in field strength affects the collision cross section for several reasons. They include an increase in ion temperature leading to larger ion sizes, a decrease in the influence of long-range attractive interactions, and dipole alignment that is more pronounced with fewer protons attached.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 2","pages":"285 - 295"},"PeriodicalIF":1.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263647","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

Development of a Nanocomposite Material Based on PCL/Zeolite-Supported Silver Nanoparticles for Active Food Packaging 开发基于 PCL/沸石支撑银纳米颗粒的纳米复合材料，用于活性食品包装

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-16 DOI: 10.1134/S0965545X24600649

Fayçal Benhacine, Feriel Meriem Lounis, Assia Sihem Hadj-Hamou

{"title":"Development of a Nanocomposite Material Based on PCL/Zeolite-Supported Silver Nanoparticles for Active Food Packaging","authors":"Fayçal Benhacine, Feriel Meriem Lounis, Assia Sihem Hadj-Hamou","doi":"10.1134/S0965545X24600649","DOIUrl":"10.1134/S0965545X24600649","url":null,"abstract":"In recent years, more and more researchers devote attention on the development and application ofbiodegradable, renewable, abundant, environmental-friendly and low-cost active packaging films, with appropriate antioxydante and antimicrobial properties. This paper focuses on developing composite poly (ε-caprolactone) (PCL) membranes reinforced with silver-zeolite nanoparticles (AgZ) prepared by solvent casting method. The resulting structural, thermal and surface properties of the nanocomposite materials were studied by using experimental characterization techniques such as Fourier-transform infrared (FTIR) analysis, UV-visible spectrophotometry, X-Ray diffraction (XRD), contact angle (CA), atomic force microscopy (AFM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The water vapor permeability (WVP) and the mechanical properties have been investigated. Experimental results showed that AgZ nanoparticles were well dispersed into PCL matrix leading to thermally stable nanocomposites with semi-crystalline structure and hydrophilic surfaces. More importantly, the nanocomposite films showed good antibacterial activity against Staphylococcus aureus and Salmonella enteric strains, demonstrating a potential application as an effective and safe packaging material to prolong the shelf life of food products.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 2","pages":"240 - 252"},"PeriodicalIF":1.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263648","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 Temperature as a Function of Magnetic Field and Frequency on the Magnetorheological Properties of the Smart Composite Elastomer 温度作为磁场和频率的函数对智能复合弹性体磁流变特性的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-09-16 DOI: 10.1134/S0965545X24600789

A. Khebli, M. Tourab, S. Aguib, N. Chikh, A. Nour, R. Harhout, T. Djedid, S. Rouabah

{"title":"Effect of Temperature as a Function of Magnetic Field and Frequency on the Magnetorheological Properties of the Smart Composite Elastomer","authors":"A. Khebli, M. Tourab, S. Aguib, N. Chikh, A. Nour, R. Harhout, T. Djedid, S. Rouabah","doi":"10.1134/S0965545X24600789","DOIUrl":"10.1134/S0965545X24600789","url":null,"abstract":"Magnetorheological elastomers (MREs) are known to be smart composite materials able to storing and dissipating part of the energy when subjected to external excitation (magnetic field, temperature, frequency). In this paper, anisotropic magnetorheological elastomers containing 20, 30, and 40% of the micrometric iron particles MRE prepared. The magnetorheological characteristics such as, storage modulus, loss modulus and loss factor MRE measured by dynamic mechanical analysis (DMA) over a range of frequencies (0.01 to 100 Hz), strain amplitudes (0.01 to 20%) and temperatures (0 to 100°C). The magnetorheological elastomer during dynamic mechanical characterization is subjected to a constant magnetic field intensity value of 0.2 T. Increasing the excitation frequency also increases the magnetomechanical properties of the MRE. The temperature has a reversible effect with the frequency, we see that when we increase the temperature, the magnetomechanical properties of the MRE decrease. The experimental results precisely showed the variation of the dynamic moduli (storage modulus, loss modulus and shear loss factor) of the anisotropic MRE loaded with 20, 30, and 40% ferromagnetic particles as a function of the parameters of influence such as: frequency and temperature.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 2","pages":"262 - 271"},"PeriodicalIF":1.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263426","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