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de Souza TC, Costa AFDS, Vinhas GM, Sarubbo LA. Synthesis of Iron Oxides and Influence on Final Sizes and Distribution in Bacterial Cellulose Applications. Polymers (Basel) 2023; 15:3284. [PMID: 37571178 PMCID: PMC10422641 DOI: 10.3390/polym15153284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Iron oxide nanoparticles have been investigated due to their suitable characteristics for diverse applications in the fields of biomedicine, electronics, water or wastewater treatment and sensors. Maghemite, magnetite and hematite are the most widely studied iron oxide particles and have ferrimagnetic characteristics. When very small, however, these particles have superparamagnetic properties and are called superparamagnetic iron oxide nanoparticles (SPIONs). Several methods are used for the production of these particles, such as coprecipitation, thermal decomposition and microemulsion. However, the variables of the different types of synthesis must be assessed to achieve greater control over the particles produced. In some studies, it is possible to compare the influence of variations in the factors for production with each of these methods. Thus, researchers use different adaptations of synthesis based on each objective and type of application. With coprecipitation, it is possible to obtain smaller, more uniform particles with adjustments in temperature, pH and the types of reagents used in the process. With thermal decomposition, greater control is needed over the time, temperature and proportion of surfactants and organic and aqueous phases in order to produce smaller particles and a narrower size distribution. With the microemulsion process, the control of the confinement of the micelles formed during synthesis through the proportions of surfactant and oil makes the final particles smaller and less dispersed. These nanoparticles can be used as additives for the creation of new materials, such as magnetic bacterial cellulose, which has different innovative applications. Composites that have SPIONs, which are produced with greater rigour with regards to their size and distribution, have superparamagnetic properties and can be used in medical applications, whereas materials containing larger particles have ferromagnetic applications. To arrive at a particular particle with specific characteristics, researchers must be attentive to both the mechanism selected and the production variables to ensure greater quality and control of the materials produced.
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Affiliation(s)
- Thaís Cavalcante de Souza
- Center of Exact and Natural Sciences, Department of Materiais Science, Federal University of Pernambuco (UFPE), Rua Professor Moraes Rêgo, n. 1235, Cidade Universitária, Recife 50670-901, Brazil; (T.C.d.S.); (G.M.V.)
- Advanced Institute of Technology and Innovation (IATI), Rua Potyra, n. 31, Prado, Recife 50751-310, Brazil;
| | - Andréa Fernanda de Santana Costa
- Advanced Institute of Technology and Innovation (IATI), Rua Potyra, n. 31, Prado, Recife 50751-310, Brazil;
- Communication and Design Center, Centro Acadêmico da Região Agreste, Federal University of Pernambuco (UFPE), BR 104, Km 59, s/n, Nova Caruaru, Caruaru 50670-901, Brazil
| | - Gloria Maria Vinhas
- Center of Exact and Natural Sciences, Department of Materiais Science, Federal University of Pernambuco (UFPE), Rua Professor Moraes Rêgo, n. 1235, Cidade Universitária, Recife 50670-901, Brazil; (T.C.d.S.); (G.M.V.)
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), Avenida dos Economistas—Cidade Universitária, Recife 50740-590, Brazil
| | - Leonie Asfora Sarubbo
- Advanced Institute of Technology and Innovation (IATI), Rua Potyra, n. 31, Prado, Recife 50751-310, Brazil;
- UNCAP Icam Tech School, Catholic University of Pernambuco (UNICAP), Rua do Príncipe, n. 526, Boa Vista, Recife 50050-900, Brazil
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2
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Sahare S, Ghoderao P, Chan Y, Lee SL. Surface supramolecular assemblies tailored by chemical/physical and synergistic stimuli: a scanning tunneling microscopy study. NANOSCALE 2023; 15:1981-2002. [PMID: 36515142 DOI: 10.1039/d2nr05264d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Supramolecular self-assemblies formed by various non-covalent interactions can produce diverse functional networks on solid surfaces. These networks have recently attracted much interest from both fundamental and application points of view. Unlike covalent organic frameworks (COFs), the properties of the assemblies differ from each other depending on the constituent motifs. These various motifs may find diverse applications such as in crystal engineering, surface modification, and molecular electronics. Significantly, these interactions between/among the molecular tectonics are relatively weak and reversible, which makes them responsive to external stimuli. Moreover, for a liquid-solid-interface environment, the dynamic processes are amenable to in situ observation using scanning tunneling microscopy (STM). In the literature, most review articles focus on supramolecular self-assembly interactions. This review summarizes the recent literature in which stimulation sources, including chemical, physical, and their combined stimuli, cooperatively tailor supramolecular assemblies on surfaces. The appropriate design and synthesis of functional molecules that can be integrated on different surfaces permits the use of nanostructured materials and devices for bottom-up nanotechnology. Finally, we discuss synergic effect on materials science.
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Affiliation(s)
- Sanjay Sahare
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
- Faculty of Physics, Adam Mickiewicz University, Poznań, 61-614, Poland
| | - Prachi Ghoderao
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
| | - Yue Chan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
| | - Shern-Long Lee
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
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3
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Mann J, Garnweitner G, Schilde C. Preparation of Self-Assembled Nanoparticle-Polymer Hybrids from Modified Silica Nanoparticles and Polystyrene-Block-Polyacrylic Acid Vesicles via the Co-Precipitation Method. Polymers (Basel) 2023; 15:polym15020444. [PMID: 36679323 PMCID: PMC9867192 DOI: 10.3390/polym15020444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 01/18/2023] Open
Abstract
Nanoparticle-polymer hybrids are becoming increasingly important because seemingly contrasting properties, such as mechanical stability and high elasticity, can be combined into one material. In particular, hybrids made of self-assembled polymers are of growing interest since they exhibit high structural precision and diversity and the subsequent reorganization of the nanoparticles is possible. In this work, we show, for the first time, how hybrids of silica nanoparticles and self-assembled vesicles of polystyrene-block-polyacrylic acid can be prepared using the simple and inexpensive method of co-precipitation, highlighting in particular the challenges of using silica instead of other previously well-researched materials, such as gold. The aim was to investigate the influence of the type of modification and the particle size of the silica nanoparticles on the encapsulation and structure of the polymer vesicles. For this purpose, we first needed to adjust the surface properties of the nanoparticles, which we achieved with a two-step modification procedure using APTES and carboxylic acids of different chain lengths. We found that silica nanoparticles modified only with APTES could be successfully encapsulated, while those modified with APTES and decanoic acid resulted in vesicle agglomeration and poor encapsulation due to their strong hydrophobicity. In contrast, no negative effects were observed when different particle sizes (20 nm and 45 nm) were examined.
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Affiliation(s)
- Jil Mann
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
- Correspondence:
| | - Georg Garnweitner
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
| | - Carsten Schilde
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
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4
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Lazanas AC, Katsouras A, Spanos M, Manesi GM, Moutsios I, Vashurkin DV, Moschovas D, Gioti C, Karakassides MA, Gregoriou VG, Ivanov DA, Chochos CL, Avgeropoulos A. Synthesis and Characterization of Hybrid Materials Derived from Conjugated Copolymers and Reduced Graphene Oxide. Polymers (Basel) 2022; 14:polym14235292. [PMID: 36501686 PMCID: PMC9737337 DOI: 10.3390/polym14235292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/11/2022] Open
Abstract
In this study the preparation of hybrid materials based on reduced graphene oxide (rGO) and conjugated copolymers is reported. By tuning the number and arrangement of thiophenes in the main chain (indacenothiophene or indacenothienothiophene) and the nature of the polymer acceptor (difluoro benzothiadiazole or diketopyrrolopyrrole) semiconducting copolymers were synthesized through Stille aromatic coupling and characterized to determine their molecular characteristics. The graphene oxide was synthesized using the Staudenmaier method and was further modified to reduced graphene oxide prior to structural characterization. Various mixtures with different rGO quantities and conjugated copolymers were prepared to determine the optoelectronic, thermal and morphological properties. An increase in the maximum absorbance ranging from 3 to 6 nm for all hybrid materials irrespective of the rGO concentration, when compared to the pristine conjugated copolymers, was estimated through the UV-Vis spectroscopy indicating a differentiation on the optical properties. Through voltammetric experiments the oxidation and reduction potentials were determined and the calculated HOMO and LUMO levels revealed a decrease on the electrochemical energy gap for low rGO concentrations. The study indicates the potential of the hybrid materials consisting of graphene oxide and high band gap conjugated copolymers for applications related to organic solar cells.
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Affiliation(s)
- Alexandros Ch. Lazanas
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Athanasios Katsouras
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Michael Spanos
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
- National Hellenic Research Foundation (NHRF), 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Gkreti-Maria Manesi
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Ioannis Moutsios
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
- Institut de Sciences des Matériaux de Mulhouse—IS2M, CNRS UMR7361, 15 Jean Starcky, 68057 Mulhouse, France
| | - Dmitry V. Vashurkin
- Faculty of Chemistry, Lomonosov Moscow State University, 9MSU, GSP-1, 1-3 Leninskiye Gory, 119991 Moscow, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
| | - Dimitrios Moschovas
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Christina Gioti
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
| | | | - Vasilis G. Gregoriou
- National Hellenic Research Foundation (NHRF), 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Dimitri A. Ivanov
- Institut de Sciences des Matériaux de Mulhouse—IS2M, CNRS UMR7361, 15 Jean Starcky, 68057 Mulhouse, France
- Faculty of Chemistry, Lomonosov Moscow State University, 9MSU, GSP-1, 1-3 Leninskiye Gory, 119991 Moscow, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
| | - Christos L. Chochos
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
- National Hellenic Research Foundation (NHRF), 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
- Correspondence: (C.L.C.); (A.A.); Tel.: +30-26-5100-9001 (A.A.)
| | - Apostolos Avgeropoulos
- Department of Materials Science Engineering, University of Ioannina, 45110 Ioannina, Greece
- Faculty of Chemistry, Lomonosov Moscow State University, 9MSU, GSP-1, 1-3 Leninskiye Gory, 119991 Moscow, Russia
- Correspondence: (C.L.C.); (A.A.); Tel.: +30-26-5100-9001 (A.A.)
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5
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Demchuk Z, Zhu J, Li B, Zhao X, Islam NM, Bocharova V, Yang G, Zhou H, Jiang Y, Choi W, Advincula R, Cao PF. Unravelling the Influence of Surface Modification on the Ultimate Performance of Carbon Fiber/Epoxy Composites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:45775-45787. [PMID: 36170969 PMCID: PMC9562280 DOI: 10.1021/acsami.2c11281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
The overall performance of polymer composites depends on not only the intrinsic properties of the polymer matrix and inorganic filler but also the quality of interfacial adhesion. Although many reported approaches have been focused on the chemical treatment for improving interfacial adhesion, the examination of ultimate mechanical performance and long-term properties of polymer composites has been rarely investigated. Herein, we report carbon fiber (CF)/epoxy composites with improved interfacial adhesion by covalent bonding between CFs and the epoxy matrix. This leads to the improved ultimate mechanical properties and enhanced thermal aging performance. Raman mapping demonstrates the formation of an interphase region derived from the covalent bonding between CFs and the epoxy matrix, which enables the uniform fiber distribution and eliminates phase separation during thermal cycling. The covalent attachment of the CF to the epoxy matrix suppresses its migration during temperature fluctuations, preserving the mechanical performance of resulting composites under the thermal aging process. Furthermore, the finite elemental analysis reveals the effectiveness of the chemical treatment of CFs in improving the interfacial strength and toughness of silane-treated CF/epoxy composites. The insight into the mechanical improvement of CF/epoxy composites suggests the high potential of surface modification of inorganic fillers toward polymer composites with tunable properties for different applications.
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Affiliation(s)
- Zoriana Demchuk
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Jiadeng Zhu
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Bingrui Li
- The
Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Xiao Zhao
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Nurul Md. Islam
- Department
of Mechanical Engineering, University of
North Texas, Denton, Texas 76203, United States
| | - Vera Bocharova
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Guang Yang
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Hongyu Zhou
- Department
of Civil and Environmental Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Yijie Jiang
- Department
of Mechanical Engineering, University of
North Texas, Denton, Texas 76203, United States
| | - Wonbong Choi
- Department
of Mechanical Engineering, University of
North Texas, Denton, Texas 76203, United States
| | - Rigoberto Advincula
- Center
for Nanophase Materials and Sciences, Oak
Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
- Department
of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Peng-Fei Cao
- State
Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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6
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Düsenberg B, Groppe P, Müssig S, Schmidt J, Bück A. Magnetizing Polymer Particles with a Solvent-Free Single Stage Process Using Superparamagnetic Iron Oxide Nanoparticles (SPION)s. Polymers (Basel) 2022; 14:polym14194178. [PMID: 36236126 PMCID: PMC9570641 DOI: 10.3390/polym14194178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 11/09/2022] Open
Abstract
Magnetic polymer composites are used in a variety of applications in many industries. Their production methods are usually time-consuming and solvent-intensive as they are performed in liquid phase processes, such as emulsion polymerization or precipitation. In this work, a quick, easy, and solvent-free method is presented to coat polymer particles with a discrete, non-coherent coating of superparamagnetic nanoparticles. The results of the dry coating process are evaluated optically, by means of scanning electron microscopy (SEM), via powder X-ray diffraction and thermally by means of differential scanning calorimetry, before finally demonstrating the effectiveness of dry coating by means of a vibrating sample magnetometer.
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Affiliation(s)
- Björn Düsenberg
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, D-91058 Erlangen, Germany
- Collaborative Research Center 814—Additive Manufacturing (DFG, German Research Foundation), Am Weichselgarten 9, D-91058 Erlangen, Germany
| | - Philipp Groppe
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, D-91058 Erlangen, Germany
| | - Stephan Müssig
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, D-91058 Erlangen, Germany
| | - Jochen Schmidt
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, D-91058 Erlangen, Germany
- Collaborative Research Center 814—Additive Manufacturing (DFG, German Research Foundation), Am Weichselgarten 9, D-91058 Erlangen, Germany
| | - Andreas Bück
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, D-91058 Erlangen, Germany
- Collaborative Research Center 814—Additive Manufacturing (DFG, German Research Foundation), Am Weichselgarten 9, D-91058 Erlangen, Germany
- Correspondence:
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7
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Effect of CeO2–GO Nanocomposite on the Anticorrosion Properties of Epoxy Coating in Simulated Acid Rain Solution. Polymers (Basel) 2022; 14:polym14173573. [PMID: 36080648 PMCID: PMC9460247 DOI: 10.3390/polym14173573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 02/06/2023] Open
Abstract
The lamellar structure of graphene oxide and the filling effect of nano-cerium oxide particles together provide a good barrier and stability to coating. In this paper, cerium oxide-graphene oxide (4:1) nanocomposite was prepared by the hydrothermal synthesis method. The effect of cerium oxide–graphene oxide (4:1) nanocomposite on the anticorrosion properties of epoxy coating in simulated acid rain solution was studied by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), Mott–Schottky curve, Tafel curve, and micromorphological characterization, in order to compare it with pure epoxy coating, graphene oxide epoxy coating, and cerium oxide epoxy coating. The obtained results showed that cerium oxide–graphene oxide (4:1) epoxy coating’s protection efficiency was as high as 98.62%. These results indicated that cerium oxide–graphene oxide modified anticorrosive coating had an excellent application prospect in an acid rain environment. Meanwhile, owing to the poor protection ability of epoxy resin and unstably hydrolysis product of CeO2 to the acidic medium, the resistance of CeO2–GO (4:1)/EP coating to acidic corrosive medium was relatively poorer than that of neutral and saline-alkali corrosive medium.
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8
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Highly Thermal Conductive and Electrically Insulating Epoxy Composites Based on Zinc-Oxide-Coated Silver Nanowires. Polymers (Basel) 2022; 14:polym14173539. [PMID: 36080614 PMCID: PMC9460417 DOI: 10.3390/polym14173539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 12/04/2022] Open
Abstract
Nano-ZnO particles were deposited on the surface of silver nanowires (AgNWs) by the precipitation method, and the obtained AgNW@ZnO filler with core-shell structure was added to epoxy resin to prepare AgNW@ZnO/EP thermally conductive composites. The ZnO coating on the surface of AgNWs effectively improves the thermal conductivity of the composites. When 8 wt% AgNW@ZnO filler was added to the epoxy resin, the thermal conductivity of the AgNW@ZnO/EP composite increased to 0.77 W/(m·K). The enhancement of the thermal conductivity is attributed to the fact that ZnO effectively improves the interface bonding between AgNWs and the epoxy matrix, thus strengthening the contact between AgNWs. In addition, the electrical insulation of the AgNW@ZnO/EP composites was improved upon the introduction of the ZnO coating over AgNWs. For the filler content of 8 wt%, the volume resistivity of the AgNW@ZnO/EP composites was found to be higher than 1013 Ω·cm. AgNW@ZnO/EP composites have also exhibited low dielectric constant and good thermal stability.
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9
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Ozkan SZ, Kostev AI, Chernavskii PA, Karpacheva GP. Novel Hybrid Nanomaterials Based on Poly- N-Phenylanthranilic Acid and Magnetic Nanoparticles with Enhanced Saturation Magnetization. Polymers (Basel) 2022; 14:2935. [PMID: 35890710 PMCID: PMC9320828 DOI: 10.3390/polym14142935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/11/2022] [Accepted: 07/16/2022] [Indexed: 11/16/2022] Open
Abstract
A one-step preparation method for cobalt- and iron-containing nanomaterials based on poly-N-phenylanthranilic acid (P-N-PAA) and magnetic nanoparticles (MNP) was developed for the first time. To synthesize the MNP/P-N-PAA nanocomposites, the precursor is obtained by dissolving a Co (II) salt in a magnetic fluid based on Fe3O4/P-N-PAA with a core-shell structure. During IR heating of the precursor in an inert atmosphere at T = 700−800 °C, cobalt interacts with Fe3O4 reduction products, which results in the formation of a mixture of spherical Co-Fe, γ-Fe, β-Co and Fe3C nanoparticles of various sizes in the ranges of 20 < d < 50 nm and 120 < d < 400 nm. The phase composition of the MNP/P-N-PAA nanocomposites depends significantly on the cobalt concentration. The reduction of metals occurs due to the hydrogen released during the dehydrogenation of phenylenamine units of the polymer chain. The introduction of 10−30 wt% cobalt in the composition of nanocomposites leads to a significant increase in the saturation magnetization of MNP/P-N-PAA (MS = 81.58−149.67 emu/g) compared to neat Fe3O4/P-N-PAA (MS = 18.41−27.58 emu/g). The squareness constant of the hysteresis loop is κS = MR/MS = 0.040−0.209. The electrical conductivity of the MNP/P-N-PAA nanomaterials does not depend much on frequency and reaches 1.2 × 10−1 S/cm. In the argon flow at 1000 °C, the residue is 77−88%.
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Affiliation(s)
- Sveta Zhiraslanovna Ozkan
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia; (A.I.K.); (P.A.C.); (G.P.K.)
| | - Aleksandr Ivanovich Kostev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia; (A.I.K.); (P.A.C.); (G.P.K.)
| | - Petr Aleksandrovich Chernavskii
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia; (A.I.K.); (P.A.C.); (G.P.K.)
- Department of Chemistry, Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russia
| | - Galina Petrovna Karpacheva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia; (A.I.K.); (P.A.C.); (G.P.K.)
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10
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Nikolaeva AL, Bugrov AN, Sokolova MP, Ivan’kova EM, Abalov IV, Vlasova EN, Gofman IV. Metal Oxide Nanoparticles: An Effective Tool to Modify the Functional Properties of Thermally Stable Polyimide Films. Polymers (Basel) 2022; 14:2580. [PMID: 35808624 PMCID: PMC9269602 DOI: 10.3390/polym14132580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 11/16/2022] Open
Abstract
A series of polyimide/metal oxide (either ZrO2 or TiO2) nanocomposite films were fabricated based on two polymer matrices. The prepared films were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction analysis (XRD), and their thermal and mechanical properties were investigated with the use of thermogravimetric (TGA), differential thermal analysis (DTA), and thermomechanical analysis (TMA). We have found out that functional properties of the obtained materials are determined by a number of factors, not only the type, size, surface functionality, and concentration of the nanofiller, but also the chemical structure of the matrix polyimide. We have demonstrated some trends in the thermal and mechanical behavior of the materials depending on these features. The data could be of great interest in the areas where new materials with improved functional characteristics are needed.
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Affiliation(s)
- Alexandra L. Nikolaeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
| | - Alexander N. Bugrov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
- Department of Physical Chemistry, Saint Petersburg Electrotechnical University (ETU “LETI”), ul. Professora Popova 5, 197022 St. Petersburg, Russia
| | - Maria P. Sokolova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
| | - Elena M. Ivan’kova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
| | - Ivan V. Abalov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
| | - Elena N. Vlasova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
| | - Iosif V. Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.N.B.); (M.P.S.); (E.M.I.); (I.V.A.); (E.N.V.); (I.V.G.)
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Fallahiarezoudar E, Ngadiman NHA, Yusof NM, Idris A, Ishak MSA. Development of 3D Thermoplastic Polyurethane (TPU)/Maghemite (ϒ-Fe 2O 3) Using Ultra-Hard and Tough (UHT) Bio-Resin for Soft Tissue Engineering. Polymers (Basel) 2022; 14:2561. [PMID: 35808606 PMCID: PMC9269070 DOI: 10.3390/polym14132561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/15/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
The use of soft tissue engineering scaffolds is an advanced approach to repairing damaged soft tissue. To ensure the success of this technique, proper mechanical and biocompatibility properties must be taken into consideration. In this study, a three-dimensional (3D) scaffold was developed using digital light processing (DLP) and ultra-hard and tough (UHT) bio-resin. The 3D scaffold structure consisted of thermoplastic polyurethane (TPU) and maghemite (ϒ-Fe2O3) nanoparticles mixed with UHT bio-resin. The solution sample for fabricating the scaffolds was varied with the concentration of the TPU (10, 12.5, and 15% wt/v) and the amount of ϒ-Fe2O3 (1, 3, and 5% v/v) added to 15% wt/v of TPU. Before developing the real geometry of the sample, a pre-run of the DLP 3D printing process was done to determine the optimum curing time of the structure to be perfectly cured, which resulted in 30 s of curing time. Then, this study proceeded with a tensile test to determine the mechanical properties of the developed structure in terms of elasticity. It was found that the highest Young's Modulus of the scaffold was obtained with 15% wt/v TPU/UHT with 1% ϒ-Fe2O3. Furthermore, for the biocompatibility study, the degradation rate of the scaffold containing TPU/UHT was found to be higher compared to the TPU/UHT containing ϒ-Fe2O3 particles. However, the MTT assay results revealed that the existence of ϒ-Fe2O3 in the scaffold improved the proliferation rate of the cells.
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Affiliation(s)
- Ehsan Fallahiarezoudar
- Department of Industrial Engineering, Faculty of Engineering, East of Guilan, University of Guilan, Roudsar 44918, Guilan, Iran;
| | - Nor Hasrul Akhmal Ngadiman
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Noordin Mohd Yusof
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Ani Idris
- School of Chemical Engineering, Faculty of Engineering, c/o Institute of Bioproduct Development, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Mohamad Shaiful Ashrul Ishak
- Faculty of Mechanical Engineering Technology, Universiti Malaysia Perlis, Kampus Pauh Putra, Arau 02600, Perlis, Malaysia;
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12
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Romero-Fierro D, Bustamante-Torres M, Bravo-Plascencia F, Magaña H, Bucio E. Polymer-Magnetic Semiconductor Nanocomposites for Industrial Electronic Applications. Polymers (Basel) 2022; 14:2467. [PMID: 35746043 PMCID: PMC9228222 DOI: 10.3390/polym14122467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/08/2022] [Accepted: 06/15/2022] [Indexed: 12/23/2022] Open
Abstract
Nanocomposite materials have acquired great importance, as have similar composite materials on a macroscopic scale, because the reinforcement complements the defects in the properties of the matrix, thus obtaining materials with better mechanical, thermal, and electrical properties, among others. At the same time, the importance and research of polymeric nanocomposites reinforced with nanoparticles of various types have grown. Among those that have stood out the most in the electronics industry are polymeric matrices reinforced with nanoparticles that present dual behavior, that is, both magnetic and semiconductor. This property has been very well used in developing electronic devices such as televisions, computers, and smartphones, which are part of everyday life. In this sense, this review presents a compilation of the synthetic methods to produce polymer nanocomposites with dual magnetic and semiconductor behavior and their potential applications within electronic fields and new relevant trends.
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Affiliation(s)
- David Romero-Fierro
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City 04510, Mexico;
| | - Moises Bustamante-Torres
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City 04510, Mexico;
| | - Francisco Bravo-Plascencia
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Toluca 50200, Mexico;
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacan 04510, Mexico
| | - Héctor Magaña
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418, Parque Industrial Internacional Tijuana, Tijuana 22390, Mexico;
| | - Emilio Bucio
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City 04510, Mexico;
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13
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Siddique SK, Sadek H, Lee TL, Tsai CY, Chang SY, Tsai HH, Lin TS, Manesi GM, Avgeropoulos A, Ho RM. Block Copolymer Modified Nanonetwork Epoxy Resin for Superior Energy Dissipation. Polymers (Basel) 2022; 14:1891. [PMID: 35567059 PMCID: PMC9105528 DOI: 10.3390/polym14091891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 02/01/2023] Open
Abstract
Herein, this work aims to fabricate well-ordered nanonetwork epoxy resin modified with poly(butyl acrylate)-b-poly(methyl methacrylate) (PBA-b-PMMA) block copolymer (BCP) for enhanced energy dissipation using a self-assembled diblock copolymer of polystyrene-b-poly(dimethylsiloxane) (PS-b-PDMS) with gyroid and diamond structures as templates. A systematic study of mechanical properties using nanoindentation of epoxy resin with gyroid- and diamond-structures after modification revealed significant enhancement in energy dissipation, with the values of 0.36 ± 0.02 nJ (gyroid) and 0.43 ± 0.03 nJ (diamond), respectively, when compared to intrinsic epoxy resin (approximately 0.02 ± 0.002 nJ) with brittle characteristics. This enhanced property is attributed to the synergic effect of the deliberate structure with well-ordered nanonetwork texture and the toughening of BCP-based modifiers at the molecular level. In addition to the deliberate structural effect from the nanonetwork texture, the BCP modifier composed of epoxy-philic hard segment and epoxy-phobic soft segment led to dispersed soft-segment domains in the nanonetwork-structured epoxy matrix with superior interfacial strength for the enhancement of applied energy dissipation.
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Affiliation(s)
- Suhail K. Siddique
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (S.K.S.); (H.S.); (T.-L.L.)
| | - Hassan Sadek
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (S.K.S.); (H.S.); (T.-L.L.)
| | - Tsung-Lun Lee
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (S.K.S.); (H.S.); (T.-L.L.)
| | - Cheng-Yuan Tsai
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (C.-Y.T.); (S.-Y.C.)
| | - Shou-Yi Chang
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (C.-Y.T.); (S.-Y.C.)
| | - Hsin-Hsien Tsai
- Kaohsiung Factory R&D Department, Chang Chun Plastics Co., Ltd., Kaohsiung 81469, Taiwan; (H.-H.T.); (T.-S.L.)
| | - Te-Shun Lin
- Kaohsiung Factory R&D Department, Chang Chun Plastics Co., Ltd., Kaohsiung 81469, Taiwan; (H.-H.T.); (T.-S.L.)
| | - Gkreti-Maria Manesi
- Department of Materials Science Engineering, University Campus, University of Ioannina, 45110 Ioannina, Greece; (G.-M.M.); (A.A.)
| | - Apostolos Avgeropoulos
- Department of Materials Science Engineering, University Campus, University of Ioannina, 45110 Ioannina, Greece; (G.-M.M.); (A.A.)
- Faculty of Chemistry, Lomonosov Moscow State University (MSU), GSP-1, 1-3 Leninskiye Gory, 119991 Moscow, Russia
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan; (S.K.S.); (H.S.); (T.-L.L.)
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14
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Ji Q, Fan L, Liu S, Ye H, Xiang S, Wang P. Host-guest interactions directed the morphology transformation of a charge-transfer complex of a naphthalene-tailored amphiphile/methyl viologen: From thin-films into diamond-like assemblies. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.05.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Sharma P, Nath H, Frontera A, Barcelo-Oliver M, Verma AK, Hussain S, Bhattacharyya MK. Biologically relevant unusual cooperative assemblies and fascinating infinite crown-like supramolecular nitrate–water hosts involving guest complex cations in bipyridine and phenanthroline-based Cu( ii) coordination compounds: antiproliferative evaluation and theoretical studies. NEW J CHEM 2021. [DOI: 10.1039/d1nj01004b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cytotoxicity in cancer cells with structure activity relationship has been explored in Cu(ii) compounds involving biologically relevant cooperative assemblies and fascinating crown-like nitrate–water hosts with guest complex cations.
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Affiliation(s)
- Pranay Sharma
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Hiren Nath
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | - Miquel Barcelo-Oliver
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | - Akalesh K. Verma
- Department of Zoology
- Cell & Biochemical Technology Laboratory
- Cotton University
- Guwahati-781001
- India
| | - Sahid Hussain
- Department of Chemistry
- Indian Institute of Technology Patna, Bihta
- Patna-801103
- India
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