Article
Polymer Science
Jemy James, Rosemary Johnson, Anjali R. Nair, Nitin George Eapen, Blessy Joseph, Guillaume Vignaud, Yves Grohens, David Laroze, Sana Kabdrakhmanova, Nandakumar Kalarikkal, Sabu Thomas
Summary: The objective of this study is to investigate the interaction between acrylic resin and zirconia nanoparticles, and analyze the changes in optical properties and refractive index with incremental loading of nanoparticles. PMMA reinforced with zirconia nanoparticles were prepared using dip coating, spin coating and solvent casting techniques. The spectroscopic and morphological studies provided an overall understanding of the polymer nanocomposite film. The study revealed that the refractive index and optical transparency of the nanocomposite film can be maintained with the incorporation of pure zirconia nanoparticles, and spin coating was found to be the best technique for producing thin films with high transparency and refractive index.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Hyeyoung Park, Martin Wiesing, Philipp Zimmermann, Andreas Janke, Simona Schwarz, Jurgen Nagel
Summary: This article investigates a new approach for functionalizing a surface by using a conventional laser to generate chemical activation. By optimizing laser parameters, poly(ethyleneimine) (PEI) was successfully grafted onto poly(methyl methacrylate) (PMMA) and the modified surface was characterized and analyzed.
Article
Polymer Science
Xinyue Zhang, Haimo Zhang, Min Zuo, Jun Zhong, Xuanyu Shi, Shihao Sun, Li Yang, Yihu Song, Qiang Zheng
Summary: The effect of selective distribution and migration behavior of two types of modified nanoclays on the phase behavior of PMMA/SAN blends is investigated. The different grafting density and chain lengths result in different initial locations and subsequent migration behaviors of the nanoclays. The dense and short chain nanosheets are distributed at the interfacial region and form percolation networks, significantly blocking the concentration fluctuation and domain coarsening. The sparse and long chain nanosheets are initially distributed in the SAN-rich domains and slowly migrate to the interfacial region, inhibiting phase separation and stabilizing the morphology.
Article
Materials Science, Composites
Biyun Li, Shuo Wei, Hongyun Xuan, Ye Xue, Huihua Yuan
Summary: Nanofibers with varied diameters and mass fractions were blended to improve the mechanical performance of transparent composites without compromising transparency. The PA-6/PMMA composite material showed enhanced mechanical properties and thermal stability, making it suitable for applications requiring both transparency and high mechanical performance.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Olya Stoilova, Nevena Manolova, Iliya Rashkov
Summary: The electrospinning technique was successfully used for the fabrication of PMMA fibers loaded with TiO2, allowing for tailored designs and properties by adjusting material ratios and processing conditions. Incorporating TiO2 affected the morphology and properties of the composites, with the inorganic photocatalyst influencing surface characteristics. Moreover, the PMMA/TiO2 composites exhibited promising photocatalytic efficiency for future water treatment membrane applications.
Article
Materials Science, Multidisciplinary
Mariya A. Kazakova, Georgiy V. Golubtsov, Alexander G. Selyutin, Arcady V. Ishchenko, Alexandra N. Serkova, Gleb V. Gorokhov, Philip Y. Misiyuk, Nadzeya I. Valynets
Summary: An efficient strategy for synthesizing Ag/MWCNT-PMMA composites has been proposed, which involves modifying oxidized MWCNT with Ag nanoparticles and dispersing them in a PMMA matrix. By adjusting the MWCNT-Ox content, the electrical conductivity of the composites can be tuned. The Ag/MWCNT-PMMA composites demonstrate high shielding efficiency and improved electromagnetic properties due to the conductive nature and uniform distribution of fillers in the polymer.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Jin Young Seo, Min Hyuk Choi, Bo Woo Lee, Jung-Hyun Lee, Seunghan Shin, Sangho Cho, Kie Yong Cho, Kyung-Youl Baek
Summary: In this study, a functional polymeric substrate was designed and composited with a metal-organic framework catalyst to remove toxicity immediately. A coating made of the composite demonstrated excellent catalytic activity in decomposing nerve agent simulants, making it a potential material for active chemical protection coating.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biochemistry & Molecular Biology
Minal Bafna, Farah Deeba, Ankit K. Gupta, Kriti Shrivastava, Vaibhav Kulshrestha, Ankur Jain
Summary: In this study, the effect of different weight ratios (0.5%, 1%, 2%, and 4%) of metal oxide (Fe2O3) loading on the structural and electrical parameters of polymeric composites of PVDF/PMMA blend was investigated. Structural analysis was performed using XRD and FTIR spectra, while impedance analysis was used to study the electrical properties. The results showed that the real parts of the complex permittivity and dielectric loss tangent were frequency independent but increased with an increase in the concentration of nano-Fe2O3. The conductivity of the polymer blends also increased with an increased loading of Fe2O3. The electric modulus spectra were used to analyze the relaxation processes associated with the Maxwell-Wagner-Sillars mechanism and chain segmental motion in the polymer mix.
Article
Polymer Science
Yu-Cheng Ju, Donyau Chiang, Ming-Yen Tsai, Hao Ouyang, Sanboh Lee
Summary: This study investigates the effects of functionalized graphene and UV irradiation on the stress-relaxation of PMMA. The results show that increasing the graphene concentration can enhance the mechanical strength and elongation at break of the material, while UV irradiation leads to polymer chain scission and loss of molecular weight.
Article
Polymer Science
Jacek Mirowski, Rafal Oliwa, Mariusz Oleksy, Jolanta Tomaszewska, Joanna Ryszkowska, Grzegorz Budzik
Summary: Adding 20% of raspberry pomace filler after extraction significantly extended the thermal stability time for the composites, but as the concentration of filler in the PVC matrix increased, the composite density, impact strength, and tensile strength values decreased significantly while their modulus of elasticity and Shore hardness increased.
Article
Chemistry, Physical
Tejas Sharma, Burak Gultekin, Pawan Singh Dhapola, N. G. Sahoo, Sushant Kumar, Daksh Agarwal, H. K. Jun, Diksha Singh, Gaurav Nath, Pramod K. Singh, Abhimanyu Singh
Summary: A polymer electrolyte based on PMMA doped with IL was synthesized using solution cast method. The addition of IL increased the ionic conductivity and conductivity maximum. Various characterization techniques were used to analyze the properties of the developed IL-doped polymer electrolyte films. The optimized electrolyte was used in the fabrication of a supercapacitor and a dye-sensitized solar cell, showing good electrochemical performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Angga Anugrah, Sultan Ilyas, Dahlang Tahir
Summary: This study investigated the effects of various inorganic fillers on the performance of composite phantom breast with polyvinyl alcohol as a binder. Analyzing bonding characteristics, structural properties, and atomic, electronic, and absorption abilities of the composite provided insights into creating breast phantom materials. The linear attenuation coefficient of the composites showed a direct correlation with the filler used, suggesting potential for optimized breast phantom production.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Polymer Science
Chujuan Huang, Toyoko Suzuki, Hideto Minami
Summary: In this study, micrometer-sized block copolymer particles were successfully synthesized using iodine transfer polymerization as a first attempt. Methyl methacrylate (MMA) and vinyl acetate (VAc) were used as the hydrophilic monomers in a microsuspension system. The resulting poly(methyl methacrylate)-block-poly(vinyl acetate) (PMMA-b-PVAc) particles exhibited the desired molecular weight and relatively narrow molecular weight distribution, despite the low degree of polymerization of the PVAc block. The hydrolysis of these particles resulted in three different morphologies, and the formation mechanism of each morphology was proposed, attributing it to the interaction between the iodic ions generated from the degradation of iodine end groups and the elongated poly(vinyl alcohol) (PVA) segments derived from PVAc.
Article
Polymer Science
Elisa Guazzelli, Matteo Oliva, Carlo Pretti, Gianfranca Monni, Armand Fahs, Christine Bressy, Elisa Martinelli
Summary: Hydrolyzable block copolymers consisting of polyethylene glycol and poly(trialkylsilyl methacrylate-co-methyl methacrylate) were synthesized and their hydrolysis performance and erosion behavior in artificial seawater were studied. The results showed that the copolymer film surfaces could respond to the water environment and demonstrated antifouling behavior against diatoms.
Article
Chemistry, Physical
ShiWei Xie, Dong Wang, Sa Zhang, JianHua Xu, JiaJun Fu
Summary: This article describes a catalyst-free and efficient method for preparing high performance PMMA through hindered urea bond (HUB) crosslinking strategies. The HUB crosslinked PMMA exhibits improved mechanical properties, including increased Young's modulus, tensile strength, strain at break, and toughness. It also shows excellent solvent resistance, high temperature creep resistance, and the ability to be recycled and repaired.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Elena Ivan'kova, Igor Kasatkin, Gleb Vaganov, Vladimir Elokhovskiy, Alexander Bugrov, Vladimir Yudin, Ewa Pavlova, Miroslav Slouf
Summary: HDPE-based nanocomposite fibers were produced through melt extrusion and drawing, and were investigated using various experimental methods. It was found that annealed carbon nanodiscs had the ability to promote the transformation of material morphology.
Article
Chemistry, Applied
Sergey A. Lermontov, Alena N. Malkova, Anastasia A. Kolmakova, Natalia A. Sipyagina, Alexander E. Baranchikov, Mikhail A. Kaplan, Alexander S. Baikin, Alexey G. Kolmakov, Gennady P. Kopitsa, Olga S. Ivanova, Yulia E. Gorshkova, Vladimir K. Ivanov
Summary: Resorcinol-formaldehyde aerogels were synthesized and their structure and properties were analyzed. The results showed that the nature of the solvent used had a significant impact on the structure and mechanical properties of the aerogels.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Materials Science, Ceramics
Olga A. Shilova, Anastasiya S. Kovalenko, Anton M. Nikolaev, Sergey Mjakin, Alexander A. Sinel'nikov, Vladimir P. Chelibanov, Yulia E. Gorshkova, Nataliya Tsvigun, Olim N. Ruzimuradov, Gennady P. Kopitsa
Summary: The surface of TiO2 nanoparticles was modified with silica prepared by acid hydrolysis, resulting in a twofold increase in specific surface area. The modification also changed the surface functionality from Lewis acidity to Brönsted acidity. The resulting TiO2@SiO2 core-shell particles exhibited significantly enhanced singlet oxygen generation and photocatalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Sergey Yu. Kottsov, Maxim A. Shmelev, Alexander E. Baranchikov, Mikhail A. Kiskin, Alim U. Sharipov, Nikolay N. Efimov, Irina K. Rubtsova, Stanislav A. Nikolaevskii, Gennady P. Kopitsa, Tamara V. Khamova, Ilya V. Roslyakov, Igor L. Eremenko, Vladimir K. Ivanov
Summary: The first aerogel-based single-ion magnets were synthesized by immobilizing cobalt(II) ions in a silica aerogel matrix. The lyogels were synthesized by co-hydrolyzing methyl-trimethoxysilane and N-3-(trimethoxysilyl)propyl ethylenediamine, and then the cobalt(II) ions were bound to the silica matrix through the immobilized ethylenediamine groups. The cobalt(II)-modified silica aerogels exhibited slow magnetic relaxation in a nonzero field.
Article
Polymer Science
Alexandra L. L. Nikolaeva, Alexander N. N. Bugrov, Maria P. P. Sokolova, Igor V. V. Kuntsman, Elena N. N. Vlasova, Elena M. M. Ivan'kova, Ivan V. V. Abalov, Iosif V. V. Gofman
Summary: This paper reports on novel polyimide (PI) nanocomposites filled with binary mixtures of metal oxide nanoparticles and nanocarbon materials. The structure, morphology, thermal, and mechanical properties of the materials were comprehensively studied. The synergistic effect of the nanoconstituents on various functional characteristics of the PIs was revealed, and the possibility of manipulating the material properties by choosing the proper combination of nanofillers was demonstrated. This research provides a platform for the design of PI-based engineering materials with tailored characteristics for extreme conditions.
Article
Geochemistry & Geophysics
Lyubov A. Ivanova, Darya A. Golovkina, Elena V. Zhurishkina, Yulia E. Gorshkova, Alexey D. Yapryntsev, Alexander E. Baranchikov, Natalia V. Tsvigun, Gennady P. Kopitsa, Anna A. Kulminskaya, Dmitry V. Lebedev
Summary: Biomineralization is a universal process with implications in multiple fields. This study investigated the structure of CaCO3 formed during biomineralization induced by planktonic Bacillus cereus using various techniques. The structure of CaCO3 sediments differed between bacterial and cell-free systems, and varied depending on time and medium composition. The presence of DNA accelerated the rate of precipitation and affected the structure and polymorphic composition of the precipitates in bacterial culture.
Article
Chemistry, Multidisciplinary
Ruslan Smyslov, Artem Emel'yanov, Tatiana Nekrasova, Galina Prozorova, Svetlana Korzhova, Olga Trofimova, Alexander Pozdnyakov
Summary: Functional copolymers of VT and VK were synthesized and characterized using spectroscopic and analytical techniques. Metal-polymer complexes were formed using Tb(3+) ions and their luminescent properties were studied. The optimal composition for the maximum photoluminescence was found to be 16 mol. % of N-vinylcarbazole units due to simultaneous and competitive photoprocesses.
APPLIED SCIENCES-BASEL
(2023)
Correction
Nanoscience & Nanotechnology
Boris V. Vasil'ev, Ruslan Yu. Smyslov, Demid A. Kirilenko, Alexander N. Bugrov
Summary: This paper is a corrigendum related to the article "Synthesis and magnetic properties of cobalt ferrite nanoparticles formed under hydro and solvothermal condition" by Vasil'ev B.V., Smyslov R.Yu., Kirilenko D.A., Bugrov A.N.
NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS
(2023)
Correction
Nanoscience & Nanotechnology
Boris V. Vasil'ev, Ruslan Yu. Smyslov, Demid A. Kirilenko, Ilya S. Kritchenkov, Alexander N. Bugrov
Summary: This paper is a corrigendum related to the article Vasil'ev B.V., Smyslov R.Yu., Kirilenko D.A., Bugrov A.N. Synthesis and magnetic properties of cobalt ferrite nanoparticles formed under hydro and solvothermal condition. Nanosystems: Phys. Chem. Math., 2021,12 (4), P. 492-504.
NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS
(2023)
Article
Chemistry, Physical
A. M. Nikolaev, A. S. Kovalenko, K. V. Frolov, G. P. Kopitsa, A. E. Baranchikov, O. A. Shilova
Summary: Iron oxide nanopowders with magnetite structure are synthesized using chemical precipitation. The size of the main phase particles is around 10-20 nm. The synthesized powders have developed surfaces, high specific surface area (S-BET), and large pore volumes. In situ ultrasonic treatment results in the oxidations of iron(II) ions and the formation of a nonmagnetic impurity phase of goethite.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Polymer Science
Angelina P. Prosvirnina, Alexander N. Bugrov, Natalya V. Bobrova, Eugene V. Sivtsov, Alexandra L. Nikolaeva, Almaz M. Kamalov, Maria P. Sokolova, Michael A. Smirnov
Summary: Inks for 3D printing were prepared by dispersing methacrylate-functionalized bacterial cellulose nanofibers (CNF) in a polymerizable deep eutectic solvent (DES) with water as a cosolvent. The resulting 3D-printed gels were composed of chemically and physically crosslinked networks formed from modified CNF and polymerized DES, respectively. The addition of water improved the mechanical properties of the composite gel, while an anhydrous system exhibited better shape memory properties.
Article
Engineering, Multidisciplinary
Ruslan Y. Smyslov, Artem I. Emel'yanov, Ksenia V. Ezdakova, Svetlana A. Korzhova, Yulia E. Gorshkova, Albert K. Khripunov, Alexandra V. Migunova, Natalia V. Tsvigun, Galina F. Prozorova, Varvara O. Veselova, Gennady P. Kopitsa, Lijun Lu, Yanchao Mao, Alexander S. Pozdnyakov
Summary: The supramolecular structure of new composite hydrogels based on bacterial cellulose and poly-1-vinyl-1,2,4-triazole doped with orthophosphoric acid has been studied. The results show that the hydrogels have two hierarchical levels of structure, which are consistent with previous research findings.
Article
Chemistry, Applied
Olga Shilova, Valery Dolmatov, Gayane Panova, Tamara Khamova, Alexandr Baranchikov, Yulia Gorshkova, Olga Udalova, Anna Zhuravleva, Gennady Kopitsa
Summary: Detonation nanodiamond (DB) containing impurities of B (DB-B) was obtained by explosion, and it was found that DB-B had a positive effect on the germination and growth of Chinese cabbage seeds.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2022)
