Polymer Science, Series A最新文献_第4页

Fabrication of Dual-Functional Micelles Based on Star-Shaped Copolymer for Bioimaging 基于星形共聚物的生物成像双功能胶束的制备

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600169

Chaofan Liu, Shenglong Liao, Shuyin Zhong, Qingping Song, Jiangang Gao, Ying Lin

{"title":"Fabrication of Dual-Functional Micelles Based on Star-Shaped Copolymer for Bioimaging","authors":"Chaofan Liu, Shenglong Liao, Shuyin Zhong, Qingping Song, Jiangang Gao, Ying Lin","doi":"10.1134/S0965545X24600169","DOIUrl":"10.1134/S0965545X24600169","url":null,"abstract":"Dual-modal fluorescent/magnetic resonance imaging attracts more and more attentions in biomedical applications. Herein, star-shaped poly(ε-caprolactone)-b-poly(N-vinylpyrrolidone) amphiphilic copolymer with a tetrakis-(4-amino)-terminated tetraphenylethylene core was synthesized. Then, dual-functional nano micelles were achieved via a facile self-assembly of the star copolymer and in situ encapsulation of iron oxide nanoparticles. The fluorescent characteristic of the tetraphenylethylene moiety and encapsulation of iron oxide endowed the resultant dual-functional micelles with bright fluorescence and superparamagnetic properties, which indicated that the PCL segments coated on magnetic nanoparticles is effective at separating the conjugated core from iron oxide nanoparticles to minimize fluorescence quenching. The obtained micelles were found to have a good colloidal and fluorescent stability in different environment. In vitro studies revealed that these dual-functional micelles could serve as an effective fluorescent probe to achieve imaging of MCF-7 cells without obvious cytotoxicity. Thus, this work provides a facile strategy to fabricate fluorescent-magnetic dual-functional micelles for dual-modal imaging applications.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"692 - 701"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298940","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

Effects of Graphene Oxide Dimension on the Mechanical and Dielectric Properties of Epoxy Resin 石墨烯氧化物尺寸对环氧树脂机械性能和介电性能的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600066

Yi Zhang

{"title":"Effects of Graphene Oxide Dimension on the Mechanical and Dielectric Properties of Epoxy Resin","authors":"Yi Zhang","doi":"10.1134/S0965545X24600066","DOIUrl":"10.1134/S0965545X24600066","url":null,"abstract":"To study the effects of graphene oxide (GO) dimension on the mechanical and dielectric performance of epoxy resin (EP), two kinds of GO with different dimensions were selected and characterized by Fourier transform infrared spectrometer (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The results showed that the two kinds of GO had similar chemical structure, but different average particle sizes of 190.1 nm (SGO) and 1510 nm (MGO), respectively. The mechanical properties, dynamic mechanical properties, and dielectric properties of the EP/GO composites are analyzed using electronic universal testing machine, Rockwell hardness tester, dynamic mechanical analysis (DMA) and broadband dielectric impedance relaxation spectrometer. Results revealed that the GO dimension plays important role in determining the dispersion of the filler in EP matrix, and further determines the mechanical properties and dielectric performance of the composites. EP/SGO with better dispersion of GO in the EP matrix exhibits better mechanical properties, higher glass transition temperature, higher dielectric constant. Related mechanism has been proposed.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"755 - 764"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140299040","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

Characterization of Nanocomposites Based on Poly(ε-caprolactone) Filled with Recycled Red Mill Scale 基于填充回收红磨鳞片的聚（ε-己内酯）纳米复合材料的表征

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X23600382

Leila Djahnit, Samira Maou, Saida Soualmi, Rachid Dellali, Mazouri Bennama, Khaled El-Miloudi

{"title":"Characterization of Nanocomposites Based on Poly(ε-caprolactone) Filled with Recycled Red Mill Scale","authors":"Leila Djahnit, Samira Maou, Saida Soualmi, Rachid Dellali, Mazouri Bennama, Khaled El-Miloudi","doi":"10.1134/S0965545X23600382","DOIUrl":"10.1134/S0965545X23600382","url":null,"abstract":"Biodegradable poly(ɛ-caprolactone) (PCL), which is used in bioengineering applications thanks to its mechanical and biodegradable properties, it used as a polymer matrix in this study. The nanocomposite of PCL reinforced with recycled red mill scale PCL/RS has been prepared via ultrasonic mixing by solution casting technique at different amounts of RS (1, 5, 10, and 20 wt %), while virgin PCL was also produced for comparison. The structural, thermal, mechanical, and optical behaviors of PCL/RS nanocomposite films have been investigated. Raman spectroscopy shows that small amounts of particles ≤10 wt % may act as nucleation sites for the growth of polymer crystallites; While large amounts of particles will destroy crystallization zones. Blue shifts in spectrum Raman might be caused by the electronic interactions associated with charge transfer between PCL and RS nanoparticles. The XRD results is in good agreement with the Raman results that the crystallinity of esters increases in PCL/RS 10 wt % film. The melting temperature Tm of the nanocomposites is in the order of PCL/RS 1 wt % (71.1°C) > PCL/RS 5 wt % (71°C) > PCL/RS 10 wt % (70.3°C). We note that it has a resemblance in the values established by DRX and DSC, the crystallinity rate increases with the increase in the filler content 45 < 47 < 69 < 74.5. The nanocomposite materials prepared have UV-protective properties. Tensile results increase with an slight increase in RS filler at 5 wt % is 2 MPa, in comparison with PCL/RS 10 wt % (~1 MPa this result yields flexibility of the film and indicates good dispersion of RS in nanocomposite, resulting better interfacial adhesion.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"778 - 793"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140299381","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

Investigation on Structural, Electrical and Dielectric Properties of Polyaniline/ZrO2 Composite 聚苯胺/氧化锆复合材料的结构、电气和介电特性研究

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X2460025X

Jayadev Pattar, I. S. Ashwini, M. Nagaraja, S. Sarvesha Chandra, R. Sreekanth, K. Mahendra, S. R. Manohara

引用次数: 0

Development of Bacterial Cellulose-Hyaluronic Acid Multicomponent Hydrogels via Click Chemistry for Biomedical Applications 通过点击化学技术开发细菌纤维素-透明质酸多组分水凝胶，用于生物医学应用

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X23600564

Şeyma Turan Okulmuş, Burcu Oktay, Dilek Kazan, Nilhan Kayaman Apohan

{"title":"Development of Bacterial Cellulose-Hyaluronic Acid Multicomponent Hydrogels via Click Chemistry for Biomedical Applications","authors":"Şeyma Turan Okulmuş, Burcu Oktay, Dilek Kazan, Nilhan Kayaman Apohan","doi":"10.1134/S0965545X23600564","DOIUrl":"10.1134/S0965545X23600564","url":null,"abstract":"The cross-linking of bacterial cellulose (BC), hydroxypropyl methylcellulose (HPMC), and hyaluronic acid (HA) accomplished with the Copper (I) catalyzed azide-alkyne cycloaddition (CuAAC) click reaction was investigated to obtain the multicomponent hydrogels that allow selective control of material properties. Click chemistry is one of many design methodologies that can be used to create hydrogels for multi-component systems. BC, HPMC, and HA are the most preferred and suitable natural polymers for tissue engineering studies. However, in order to combine their properties in a synergistic way, they must be functionalized to interact with each other. In this study, azide-functional HA was achieved by the reaction of hyaluronic acid with 1-azido-2,3-epoxypropane. To obtain multicomponent hydrogel alkyne-terminated cellulose is also prepared. The cellulose and hyaluronic acid functionalization was confirmed by using FTIR and NMR analysis. The crosslinking reaction took place at ambient conditions for 24 h. It was observed that the swelling capacity of the multi-component hydrogel declined with the increasing amount of BC due to its high crosslinking degree. In addition, the porous morphology of hydrogels makes them suitable for wound dressing applications. SEM results revealed that pore size and porosity decreased with increasing BC concentration. MTT assay demonstrated that the hydrogels promote cell proliferation and adhesion for 3T3 cells. In vitro cell culturing within the hydrogel demonstrated good cell spreading.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"682 - 691"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298949","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

Xanthan Gum and Lignin Grafted Chemically Crosslinked Hydrogels for Dye Removal: Synthesis, Characterization and Isotherms Studies 用于去除染料的黄原胶和木质素接枝化学交联水凝胶：合成、表征和等温线研究

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X23600552

Akshita Srivastava, Manu, Rajinder K. Gupta

{"title":"Xanthan Gum and Lignin Grafted Chemically Crosslinked Hydrogels for Dye Removal: Synthesis, Characterization and Isotherms Studies","authors":"Akshita Srivastava,  Manu, Rajinder K. Gupta","doi":"10.1134/S0965545X23600552","DOIUrl":"10.1134/S0965545X23600552","url":null,"abstract":"In the present investigation synthesis of Xanthan Gum (XG-g-PAAcoAM), Lignosulphonate sodium salt (LS-g-PAAcoAM), and their combination (XG/LS-g-PAAcoAM) based hydrogels by grafting them onto acrylic acid and acrylamide for efficient removal of Methylene Blue dye have been reported. The results were found to be reliable with a removal rate exceeding 91% when administered at a dosage of 0.2 g in a 20 mL solution of Methylene blue dye over a period of 7 h. The hydrogels have been characterized by various techniques using Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and X-ray diffraction analysis. Among the three commonly used isotherms (Langmuir, Freundlich, and Temkin), the Freundlich isotherm model exhibits the highest level of fit for the dye adsorption as evident with the R2 value of 0.99. This study provides a meaningful comparative insight towards using these natural polymers i.e., XG and LS as feedstock for hydrogel synthesis and efficient adsorbent for wastewater treatment applications.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"725 - 733"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298915","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

Layer-by-Layer Deposition of Chitosan/Hyaluronic Acid Polyelectrolyte Complex Coatings onto Polyester Films 在聚酯薄膜上逐层沉积壳聚糖/透明质酸聚电解质复合物涂层

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X2460008X

A. V. Birdibekova, E. A. Starostina, A. S. Kuryanova, N. A. Aksenova, P. S. Timashev, T. A. Akopova, T. S. Demina

引用次数: 0

Effect of Morphogenesis of the Surface of Peptide Nanocomposites on their Structure and Properties 肽纳米复合材料表面的形态发生对其结构和性能的影响

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600108

A. I. Loskutov, V. B. Oshurko, S. A. Loskutov

{"title":"Effect of Morphogenesis of the Surface of Peptide Nanocomposites on their Structure and Properties","authors":"A. I. Loskutov, V. B. Oshurko, S. A. Loskutov","doi":"10.1134/S0965545X24600108","DOIUrl":"10.1134/S0965545X24600108","url":null,"abstract":"The synthesis of peptide nanocomposites from water-soluble components has many advantages. However, this raises the question of maintaining the functional properties and chemical structure of composites solid layers during long-term storage at ambient conditions. The processes of structural transformations during different stages of crystallization of hectapeptide composites with silver and gold nanoparticles in humid atmosphere were studied. The influence of temperature, humidity, nature of the substrate, its wetting, conformation of peptide molecules on the structure and electrophysical properties of the composites was considered also. Similarly to polymers two stages of crystallization were found: the initial fast and the subsequent slow. Unlike polymers, an increase in temperature does not affect this process, but even slows it down. Despite significant changes in the surface morphology of composites their electrophysical properties and conformation of molecules do not change. An increase in humidity accelerates the processes of the structural transitions. The results show that the changes in the surface morphology of PT composites under the influence of humidity relate only to the PT matrix itself and not to their locations or conformation of molecule.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"765 - 777"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140299380","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

A Comprehensive Study on Physical and Mechanical Properties of Glass/Basalt Short Fibre Reinforced Thermoplastic Composites 玻璃/沥青短纤维增强热塑性复合材料物理和机械性能的综合研究

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600078

T. Gobikannan, P. Subramani, S. J. Pawar

{"title":"A Comprehensive Study on Physical and Mechanical Properties of Glass/Basalt Short Fibre Reinforced Thermoplastic Composites","authors":"T. Gobikannan, P. Subramani, S. J. Pawar","doi":"10.1134/S0965545X24600078","DOIUrl":"10.1134/S0965545X24600078","url":null,"abstract":"Basalt fibres are gaining interest in the fibre-reinforced thermoplastic industries around the world. In this work, basalt and glass short fibres reinforced polypropylene composites were produced using twin-screw extrusion and followed by injection molding. To carry out a comprehensive study on physical and mechanical properties, the composites were produced with different proportions of fibre loadings (for both fibres 5, 10, and 20 wt %). Composites were characterized and studied for tensile (at different strain rates), flexural (at different speeds), impact, dynamic mechanical analysis, density, tensile-relaxation, melt flow index test, and rheometric properties. Results indicate that tensile, flexural, dynamic mechanical analysis, and tensile-relaxation properties increased with increasing fibre proportions in the polypropylene matrix. The melt flow and rheometric behaviors of polypropylene decreased significantly with the addition of short fibres into the matrix. The overall results showed that basalt fibres can be potentially used as replacements for glass fibre to develop these thermoplastic composites.","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"794 - 812"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140299473","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

Polymers with [2,2′-Biquinoline]-diyldimethanamine Units in the Main Chain and Their Metal–Polymer Complexes with Copper(I) 主链中含有 [2,2′-Biquinoline]-diyldimethanamine 单元的聚合物及其与铜（I）的金属聚合物络合物

IF 1 4区化学

Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600121

M. Ya. Goikhman, I. V. Podeshvo, N. L. Loretsyan, I. V. Gofman, V. D. Krasikov, I. I. Malakhova, L. S. Litvinova, E. N. Bykova, I. A. Nasirova, A. V. Yakimansky

引用次数: 0