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Wei Z, Cai Y, Zhan Y, Meng Y, Pan N, Jiang X, Xia H. Ultra-Low Loading of Ultra-Small Fe 3 O 4 Nanoparticles on Nonmodified CNTs to Improve Green EMI Shielding Capability of Rubber Composites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307148. [PMID: 37840441 DOI: 10.1002/smll.202307148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/28/2023] [Indexed: 10/17/2023]
Abstract
From a material design perspective, the incorporation of Fe3 O4 @carbon nanotube (Fe3 O4 @CNT) hybrids is an effective approach for reconciling the contradictions of high shielding and low reflection coefficients, enabling the fabrication of green shielding materials and reducing the secondary electromagnetic wave pollution. However, the installation of Fe3 O4 nanoparticles on nonmodified and nondestructive CNT walls remains a formidable challenge. Herein, a novel strategy for fabricating the above-mentioned Fe3 O4 @CNTs and subsequently assembling segregated Fe3 O4 @CNT networks in natural rubber (NR) matrices is proposed. The advanced and unique structure, magnetism, and lossless conductivity endow the as-obtained Fe3 O4 @CNT/NR with a shielding effectiveness (SE) of 63.8 dB and a low reflection coefficient of 0.24, which indicates a prominent green-shielding capability that surpasses those of previously reported green-shielding materials. Moreover, the specific SE reaches 531 dB cm-1 , exceeding that of those of previously reported carbon/polymer composites. Meanwhile, the outstanding conductivity enables the composite to reach a saturation temperature of ≈95 °C at a driving voltage of 1.5 V with long-term stability. Therefore, the as-fabricated Fe3 O4 @CNT/rubber composites represent an important development in green-shielding materials that are applied in cold environment.
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Affiliation(s)
- Zijian Wei
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Yifan Cai
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, P. R. China
| | - Yanhu Zhan
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Yanyan Meng
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Na Pan
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Xiancai Jiang
- School of Chemical Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, P. R. China
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Xu J, Li Y, Zhou Z, Cheng X. A Novel Sandwich-Structured Phase Change Composite with Efficient Photothermal Conversion and Electromagnetic Interference Shielding Interface. MATERIALS (BASEL, SWITZERLAND) 2024; 17:961. [PMID: 38399209 PMCID: PMC10890597 DOI: 10.3390/ma17040961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
Stability and multifunctionality greatly extend the applications of phase change materials (PCMs) for thermal storage and management. Herein, CuS and Fe3O4 nanoparticles were successfully loaded onto cotton-derived carbon to develop a multifunctional interface with efficient photothermal conversion and electromagnetic interference (EMI) shielding properties. 1,3:2,4-di-(3,4-dimethyl) benzylidene sorbitol (DMDBS) and expanded graphite (EG) formed an organic/inorganic three-dimensional network framework to encapsulate 1-octadecanol (OD) by self-assembly. Finally, multifunctional shape-stabilized PCMs (SSPCMs) with the sandwich structure were prepared by the hot-press process. Multifunctional SSPCMs with high load OD (91%) had favorable thermal storage density (200.6 J/g), thermal stability, and a relatively wider available temperature range with improved thermal conductivity to support the thermal storage and management realization. Furthermore, due to the synergistic enhancement of two nanoparticles and the construction of the carbon network with cotton carbon and EG, highly efficient photothermal conversion (94.4%) and EMI shielding (68.9 dB average, X-band) performance were achieved at about 3 mm thickness, which provided the possibility of the multifunctional integration of PCMs. Conclusively, this study provides new insights towards integrating solar energy utilization with the comprehensive protection of related electronics.
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Affiliation(s)
- Jun Xu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (J.X.); (Y.L.); (Z.Z.)
| | - Yuanyuan Li
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (J.X.); (Y.L.); (Z.Z.)
| | - Zhangxinyu Zhou
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (J.X.); (Y.L.); (Z.Z.)
| | - Xiaomin Cheng
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (J.X.); (Y.L.); (Z.Z.)
- School of Electromechanical and Intelligent Manufacturing, Huanggang Normal University, Huanggang 438000, China
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Gutierrez D, Doshi P, Wong HY, Nordlund D, Gandhiraman RP. Printed graphene and its composite with copper for electromagnetic interference shielding applications. NANOTECHNOLOGY 2024; 35:135202. [PMID: 38055996 DOI: 10.1088/1361-6528/ad12e9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
Advances in mobile electronics and telecommunication systems along with 5G technologies have been escalating the electromagnetic interference (EMI) problem in recent years. Graphene-based material systems such as pristine graphene, graphene-polymer composites and other graphene-containing candidates have been shown to provide adequate EMI shielding performance. Besides achieving the needed shielding effectiveness (SE), the method of applying the candidate shielding material onto the object in need of protection is of enormous importance due to considerations of ease of application, reduced logistics and infrastructure, rapid prototyping and throughput, versatility to handle both rigid and flexible substrates and cost. Printing readily meets all these criteria and here we demonstrate plasma jet printing of thin films of graphene and its composite with copper to meet the EMI shielding needs. SE over 30 dB is achieved, which represents blocking over 99.9% of the incoming radiation. Graphene and its composite with copper yield higher green index compared to pure copper shields, implying reduced reflection of incoming electromagnetic waves to help reduce secondary pollution.
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Affiliation(s)
- Daniel Gutierrez
- Space Foundry Inc., San Jose, CA 95133, United States of America
| | - Pranay Doshi
- Space Foundry Inc., San Jose, CA 95133, United States of America
| | - Hiu Yung Wong
- Department of Electrical Engineering, San Jose State University, San Jose, CA 95192, United States of America
| | - Dennis Nordlund
- Space Foundry Inc., San Jose, CA 95133, United States of America
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Fierascu RC, Lungulescu EM, Fierascu I, Stan MS, Voinea IC, Dumitrescu SI. Metal and Metal Oxide Nanoparticle Incorporation in Polyurethane Foams: A Solution for Future Antimicrobial Materials? Polymers (Basel) 2023; 15:4570. [PMID: 38231979 PMCID: PMC10708408 DOI: 10.3390/polym15234570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/18/2023] [Accepted: 11/27/2023] [Indexed: 01/19/2024] Open
Abstract
With the technological developments witnessed in recent decades, nanotechnology and nanomaterials have found uses in several common applications and products we encounter daily. On the other hand, polyurethane (PU) foams represent an extremely versatile material, being widely recognized for their extensive application possibilities and possessing a multitude of fundamental attributes that enhance their broad usability across various application fields. By combining the versatility of PU with the antimicrobial properties of nanoparticles, this emerging field holds promise for addressing the urgent need for effective antimicrobial materials in various applications. In this comprehensive review, we explore the synthesis methods, properties and applications of these nanocomposite materials, shedding light on their potential role in safeguarding public health and environmental sustainability. The main focus is on PU foams containing metal and metal oxide nanoparticles, but a brief presentation of the progress documented in the last few years regarding other antimicrobial nanomaterials incorporated into such foams is also given within this review in order to obtain a larger image of the possibilities to develop improved PU foams.
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Affiliation(s)
- Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM, 060021 Bucharest, Romania; (R.C.F.); (I.F.)
| | - Eduard-Marius Lungulescu
- National Institute for Research and Development in Electrical Engineering ICPE-CA, 313 Splaiul Unirii, 030138 Bucharest, Romania
| | - Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM, 060021 Bucharest, Romania; (R.C.F.); (I.F.)
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Bvd., 011464 Bucharest, Romania
| | - Miruna S. Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania; (M.S.S.); (I.C.V.)
| | - Ionela C. Voinea
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania; (M.S.S.); (I.C.V.)
| | - Silviu Ionel Dumitrescu
- Central Emergency University Military Hospital, 013058 Bucharest, Romania;
- Medical-Surgical Department, Faculty of Medicine, Titu Maiorescu University of Medicine and Pharmacy, 031593 Bucharest, Romania
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Nivedhitha DM, Jeyanthi S. Polyvinylidene fluoride—An advanced smart polymer for electromagnetic interference shielding applications—A novel review. POLYM ADVAN TECHNOL 2023. [DOI: 10.1002/pat.6015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Gradinaru LM, Vlad S, Ciobanu RC. The Development and Study of Some Composite Membranes Based on Polyurethanes and Iron Oxide Nanoparticles. MEMBRANES 2022; 12:1127. [PMID: 36363682 PMCID: PMC9695552 DOI: 10.3390/membranes12111127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
To improve the performance of composite membranes, their morphology can be tailored by precise control of the fabrication methods and processing conditions. To this end, the aim of this study was to develop novel high-performance composite membranes based on polyurethane matrix and magnetic nanoparticles with the desired morphology and stability, by selecting the proper method and fabrication systems. These well-prepared composite membranes were investigated from the point of view of their morphological, physico-chemical, mechanical, dielectric, and magnetic properties. In addition, their in vitro cytocompatibility was also verified by the MTT assay and their cell morphology. The results of this study can provide valuable information regarding the preparation of magnetic polyurethane-based composite membranes that could be used to design some suitable devices with tailored properties, in order to improve the image quality in magnetic resonance imaging investigations and to suppress local image artifacts and blurring.
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Affiliation(s)
- Luiza Madalina Gradinaru
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
| | - Stelian Vlad
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania
| | - Romeo Cristian Ciobanu
- Electrical Engineering Faculty, “Gheorghe Asachi” Technical University of Iasi, Dimitrie Mangeron Bd., 67, 700050 Iasi, Romania
- SC All Green SRL, I. Bacalu Street, 5, 700029 Iasi, Romania
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