Polymer Science, Series A最新文献_第2页

Rheological Properties of Polyphenylene Sulfone-Based Compositions as a Basis for Powder Injection Molding and 3D Printing Technology 作为粉末注射成型和 3D 打印技术基础的聚苯砜基复合材料的流变特性

IF 1 4区化学

Polymer Science, Series A Pub Date : 2025-01-31 DOI: 10.1134/S0965545X24601230

A. L. Slonov, A. A. Zhansitov, I. V. Musov, A. A. Khashirov, A. V. Mityukov, A. Ya. Malkin, S. Yu. Khashirova

引用次数: 0

Polyvinyl Alcohol Based Composite Sponges for Wound Delivery of Deferoxamine: Impacts of Polymeric Composition and Freeze-Thaw Cycles

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-12-22 DOI: 10.1134/S0965545X24600534

Shahram Emami, Majid Mohamadian, Nesa Amiri, Faranak Ghaderi

{"title":"Polyvinyl Alcohol Based Composite Sponges for Wound Delivery of Deferoxamine: Impacts of Polymeric Composition and Freeze-Thaw Cycles","authors":"Shahram Emami, Majid Mohamadian, Nesa Amiri, Faranak Ghaderi","doi":"10.1134/S0965545X24600534","DOIUrl":"10.1134/S0965545X24600534","url":null,"abstract":"Porous sponges of polyvinyl alcohol (PVA) can provide moist environment, protect wound from microbial attack, absorb excess exudates, exchanges oxygen and water vapor, and deliver therapeutic agents to the wound site. However, more information should be gained about comparing properties of crosslinked and non-crosslinked PVA sponges and the impacts of adding other biopolymers such as sodium alginate (ALG) and sodium carboxy methyl cellulose (CMC) on the wound dressing properties and drug release from these composite sponges. Here we have prepared and characterized PVA composite sponges loaded with deferoxamine (DFO), a drug with prominent wound-healing effects, to manage exudative chronic wounds. The impacts of crosslinking by freeze thaw cycles and adding CMC or ALG to PVA sponges were evaluated on morphology, mechanical strength, crystallinity, porosity, fluid uptake, water vapor transmission rate, water vapor loss, pH, blood compatibility, and controlling drug release. The produced sponges differed in crystallinity of PVA, pore shape, size, and interconnectivity. Crosslinked composite sponges showed better porosity than non-crosslinked ones and had higher porosity (>80%) with interconnected macropores in the appropriate size range for cell attachment. All sponges were hemocompatible with less than 1% hemolysis and had good physical integrity and flexible texture. The water handling properties were also affected by crosslinking. Although all prepared sponges showed high water absorption in the range of 450–650% within 6 h, the crosslinked sponges showed slower water uptake than non-crosslinked samples. Prepared sponges could control DFO release with 60% cumulative release over 24 and sponge composition and crosslinking influenced DFO release.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 4","pages":"491 - 504"},"PeriodicalIF":1.0,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581100","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 Effect of Heat Transfer on Self-Oscillating Neck Propagation

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-12-22 DOI: 10.1134/S0965545X24601138

S. L. Bazhenov, A. S. Kechek’yan

引用次数: 0

Depolarization Relaxation Processes in Polyvinylidene Fluoride Films with Non-polar α-Crystalline Phase

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-12-22 DOI: 10.1134/S0965545X24600704

E. A. Volgina, D. E. Temnov, D. I. Gerasimov, I. S. Kuryndin, V. K. Lavrentyev, S. V. Bronnikov

引用次数: 0

Erratum to: Recovered Carbon Black Filler Improves the Properties of Chitosan 3-Dimensional Composites 回收炭黑填料改善壳聚糖三维复合材料的性能

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-12-08 DOI: 10.1134/S0965545X24010012

Muhammad Nur Faez Mohd Sahaid, Lim Jia Xin, Noor Najmi Bonnia, Sharifah Nabihah Syed Jaafar

引用次数: 0

Hyaluronic Acid Modified Lutein Nanoparticles for Effective Application in Eye Drops: Development, Characterization, and Evaluation 透明质酸改性叶黄素纳米粒子在滴眼液中的有效应用：开发、表征和评估

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-29 DOI: 10.1134/S0965545X24601047

Peng Liu, Ling Dong, Tianqi Cai, Kai Liu, Xingtong Gao, Wenlong Sun, Aixiang Li, Xinhua Song

{"title":"Hyaluronic Acid Modified Lutein Nanoparticles for Effective Application in Eye Drops: Development, Characterization, and Evaluation","authors":"Peng Liu, Ling Dong, Tianqi Cai, Kai Liu, Xingtong Gao, Wenlong Sun, Aixiang Li, Xinhua Song","doi":"10.1134/S0965545X24601047","DOIUrl":"10.1134/S0965545X24601047","url":null,"abstract":"In this study, the possibility of using hyaluronic acid (HA) modified lutein as the main component of eye drops for ophthalmic treatment was discussed. Firstly, hyaluronic acid grafted lutein (HA-g-lutein) was synthesized by hydrophilic modification of lutein by Steglich esterification. The grafted copolymer was self-assembled in water to form micelles and then loading unreacted lutein to prepare composite nanoparticles (denoted HA-lutein NPs). The findings from the FTIR, UV–Vis, and XRD analyses indicate that the graft copolymers were synthesized while preserving the structural integrity of lutein. Furthermore, the modification demonstrated efficient inhibition of lutein crystallization. TEM showed that HA-lutein NPs self-assembled into spherical micelles in water, the particle size of which was on the nanometer scale. The saturation solubility of HA-lutein NPs exhibits a 48-fold increase compared to that of free lutein. Then the cytotoxicity of HA-lutein NPs and the effect on in-vitro transcorneal permeation of excised-rabbit cornea, corneal hydration level, and in-vivo ocular irritation after topical administration of HA-lutein NPs in rabbit eyes were studied. The results indicated the ocular safety of HA-lutein NPs. The quantitative analysis of permeability parameters by HPLC showed that the apparent permeability coefficient and the cumulative penetration quantity within 360 minutes of the HA-lutein NPs group were 3.71 and 7.04 times higher compared to the free lutein group. In summary, the graft modification of lutein with HA to form nanoparticles is an effective method to improve the availability of lutein in the eye and has potential application in ocular therapy.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 4","pages":"480 - 490"},"PeriodicalIF":1.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581335","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

Use of Guanidine-Containing Organomineral Complexes for Protection of Soft Polyvinyl Chloride Compounds from Photo- and Biodegradation 用含胍的有机配合物保护软聚氯乙烯化合物免受光降解和生物降解

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-20 DOI: 10.1134/S0965545X24701220

V. A. Gerasin, M. V. Zhurina, V. V. Kurenkov, D. I. Mendeleev

{"title":"Use of Guanidine-Containing Organomineral Complexes for Protection of Soft Polyvinyl Chloride Compounds from Photo- and Biodegradation","authors":"V. A. Gerasin, M. V. Zhurina, V. V. Kurenkov, D. I. Mendeleev","doi":"10.1134/S0965545X24701220","DOIUrl":"10.1134/S0965545X24701220","url":null,"abstract":"The study exlores the possibility of using organomineral complexes, obtained as a result of adsorption of the macromolecular biocides (polyguanidines) on the montmorillonite surface, to protect composites based on plasticized polyvinyl chloride from photooxidative degradation and biofouling. According to UV spectro-scopy data and the results of measurements of the intrinsic viscosity of polymer solutions, it has been found that the introduction of organomineral complexes into the material helps to reduce the extent of photooxidative degradation of the material under conditions of hard UV irradiation. The organomineral complexes used effectively suppress the fouling of the composites by biofilms of the micromycete Yarrowia lipolytica 367-3. The mechanical characteristics of composites containing organomineral additives are maintained at a high level after thermal aging (in accordance with the technical documentation for the material). The composites also meet the technical documentation requirements for weight loss on heating, density, and volume resistivity, but increasing the concentration of the organomineral additive in the composite above 2 wt % leads to an increase in water absorption of the material above required values.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 3","pages":"421 - 430"},"PeriodicalIF":1.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790377","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

Silk Sericin Films from Concentrated Aqueous Solutions: Processing Routes, Structure, and Properties

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-20 DOI: 10.1134/S0965545X24601011

Santiago Rueda Mira, Natalia Jaramillo Quiceno, Maria C. Arango, William Santana, Gustavo Adolfo Hincapié Llanos, Catalina Álvarez López

{"title":"Silk Sericin Films from Concentrated Aqueous Solutions: Processing Routes, Structure, and Properties","authors":"Santiago Rueda Mira, Natalia Jaramillo Quiceno, Maria C. Arango, William Santana, Gustavo Adolfo Hincapié Llanos, Catalina Álvarez López","doi":"10.1134/S0965545X24601011","DOIUrl":"10.1134/S0965545X24601011","url":null,"abstract":"This study aimed to understand the impact of different concentration routes on the structure and properties of silk sericin (SS) films. Sericin was extracted from defective cocoons (DC), at high temperature and pressure (HTHP) using an autoclave. The obtained aqueous solution was concentrated using three different routes until a final concentration of 2% (w/v) was reached. These routes include freeze-thawing (SSFT), rotary evaporation (SSE), and the dissolution of spray-dried SS in distilled water (SSSD). Films were formed from the three solutions obtained, which were characterized by Fourier transform infrared spectro-metry (ATR-FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC), and their water absorption capacity and non-soluble fraction were evaluated. According to the FTIR and TGA results, the samples concentrated by evaporation or using spray-dried SS exhibited a more amorphous and lighter structural conformation than those found in F-SSFT. This finding suggests that the use of high temperatures for SS concentration promotes protein degradation and the formation of less ordered structures in SS films. The structural properties of the SS films were confirmed by the water absorption results. In particular, the major presence of crystalline structures in F‑SSFT seems to limit their affinity for water, favoring the non-soluble fraction in this sample. The marked effect of the concentration method on the structure and properties of SS films highlights the potential of this process in the design of more efficient manufacturing routes for SS-based materials that exhibit a distinctive performance.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 4","pages":"505 - 513"},"PeriodicalIF":1.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581061","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

Self-Diffraction Characterization and Optical Limiting Behavior of the PAni/PVA Nanofiber 聚苯胺/聚乙烯醇纳米纤维的自衍射表征及光限行为

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-20 DOI: 10.1134/S0965545X24600960

Rajaa M. Abdullah, Mohammed T. Obeed, Zainab J. Sweah, Hussain A. Badran, Riyadh Ch. Abul-Hail, Maytham Qabel Hamzah

{"title":"Self-Diffraction Characterization and Optical Limiting Behavior of the PAni/PVA Nanofiber","authors":"Rajaa M. Abdullah, Mohammed T. Obeed, Zainab J. Sweah, Hussain A. Badran, Riyadh Ch. Abul-Hail, Maytham Qabel Hamzah","doi":"10.1134/S0965545X24600960","DOIUrl":"10.1134/S0965545X24600960","url":null,"abstract":"The current work presents the fabrication of polyaniline (PAni)/polyvinyl alcohol (PVA) nanofiber composites through electrospinning. The morphological properties of the sample evaluated by employing the field emission scanning electron microscope (FESEM) and the diameters of the samples are between 141 to 234 nm. The presence of both PVA and PAni in the nanofiber structure was evaluated with the aid of Fourier-Transformation Infrared Spectroscopy (FTIR). When a rifampicin-doped PVA film and a rifampicin-doped nanofiber PAni/PVA film were irradiated with a continuous wave laser beam at a wavelength of 532 nm, diffraction ring patterns (DFRPs) were seen. The nonlinear refractive index (NLDX) ({{n}_{2}}), was determined from the number of observed rings. Large value obtained of the order of 212.48 × l0–8 cm2/W for PAni/PVA nanofiber composites. The change in the nonlinear refractive index (Delta n), depends primarily on both the natural refractive index of the material and the NLDX, in which diffraction patterns play a major role in this change. In addition to that, the optical limiting) ({text{OPT}}) (qualities were investigated. Within a solid PAni/PVA host, the dye shows of some impressive optical limiting features. It has been discovered that the mechanism responsible for the limitation of optical sensitivity is mostly of a thermal nature.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"66 3","pages":"348 - 362"},"PeriodicalIF":1.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790296","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 Separation of Peptides with Inverted Sequences 带反转序列肽的分离研究

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-10-20 DOI: 10.1134/S0965545X2460100X

A. V. Gorshkov, I. G. Rozdina, M. L. Pridatchenko

引用次数: 0