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Kucheriv OI, Grygoruk VI, Oliynyk VV, Zagorodnii VV, Launets VL, Rotaru A, Gural'skiy IA. A Vanadium Dioxide‐PMMA Composite For Microwave Radiation Switching. Chempluschem 2022; 87:e202200107. [DOI: 10.1002/cplu.202200107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/17/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Olesia I. Kucheriv
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Department of Chemistry UKRAINE
| | - Valery I. Grygoruk
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Institute of High Technologies UKRAINE
| | - Viktor V. Oliynyk
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Institute of High Technologies UKRAINE
| | - Volodymyr V. Zagorodnii
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Institute of High Technologies UKRAINE
| | - Vilen L. Launets
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Institute of High Technologies UKRAINE
| | - Aurelian Rotaru
- University of Suceava: Universitatea Stefan cel Mare din Suceava Faculty of Electrical Engineering and Computer Science & Research Center MANSiD UKRAINE
| | - Il'ya A. Gural'skiy
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Department of Chemistry 64 Volodymyrska St. 01601 Kyiv UKRAINE
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Polymer Processing under Microwaves. ADVANCES IN POLYMER TECHNOLOGY 2022. [DOI: 10.1155/2022/3961233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Over the last decades, microwave heating has experienced a great development and reached various domains of application, especially in material processing. In the field of polymers, this unusual source of energy showed important advantages arising from the direct microwave/matter interaction. Indeed, microwave heating allows regio-, chemio-, and stereo-selectivity, faster chemical reactions, and higher yields even in solvent-free processes. Thus, this heating mode provides a good alternative to the conventional heating by reducing time and energy consumption, hence reducing the costs and ecological impact of polymer chemistry and processing. This review states some achievements in the use of microwaves as energy source during the synthesis and transformation of polymers. Both in-solution and free-solvent processes are described at different scales, with comparison between microwave and conventional heating.
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Karim SS, Murtaza Z, Farrukh S, Umer MA, Ali SS, Younas M, Mubashir M, Saqib S, Ayoub M, Bokhari A, Peter AP, Khoo KS, Ullah S, Show PL. Future advances and challenges of nanomaterial-based technologies for electromagnetic interference-based technologies: A review. ENVIRONMENTAL RESEARCH 2022; 205:112402. [PMID: 34838569 DOI: 10.1016/j.envres.2021.112402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/28/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
The emerging growth of the electronic devices applications has arisen the serious problems of electromagnetic (EM) wave pollution which resulting in equipment malfunction. Therefore, polymer-based composites have been considered good candidates for better EMI shielding due to their significant characteristics including, higher flexibility, ultrathin, lightweight, superior conductivity, easy fabrication processing, environmentally friendly, corrosion resistive, better adhesion with physical, chemical and thermal stability. This review article focused on the concept of the EMI shielding mechanism and challenges with the fabrication of polymer-based composites. Subsequently, recent advancements in the polymer composites applications have been critically reviewed. In addition, the impact of polymers and polymer nanocomposites with different fillers such as organic, inorganic, 2D, 3D, mixture and hybrid nano-fillers on EMI shielding effectiveness has been explored. Lastly, future research directions have been proposed to overcome the limitations of current technologies for further advancement in EMI shielding materials for industrial applications. Based on reported literature, it has been found that the low thickness based lightweight polymer is considered as a best material for excellent material for next-generation electronic devices. Optimization of polymer composites during the fabrication is required for better EMI shielding. New nano-fillers such as functionalization and composite polymers are best to enhance the EMI shielding and conductive properties.
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Affiliation(s)
- Syed Shujaat Karim
- Department of Chemical Engineering, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | - Zahid Murtaza
- Department of Chemical Engineering, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | - Sarah Farrukh
- Department of Chemical Engineering, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan.
| | - Malik Adeel Umer
- Department of Chemical Engineering, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | - Syed Sarim Ali
- National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
| | - Mohammad Younas
- Department of Chemical Engineering, University of Engineering and Technology (UET), Peshawar, 25000, Pakistan
| | - Muhammad Mubashir
- Department of Petroleum Engineering, School of Engineering, Asia Pacific University of Technology and Innovation, 57000, Kuala Lumpur, Malaysia
| | - Sidra Saqib
- Chemical Engineering Department, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Punjab, 54000, Pakistan
| | - Muhammad Ayoub
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia
| | - Awais Bokhari
- Chemical Engineering Department, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Punjab, 54000, Pakistan; Sustainable Process Integration Laboratory, SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology, VUT Brno, Technická 2896/2, 616 69, Brno, Czech Republic
| | - Angela Paul Peter
- Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham, Malaysia, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Kuan Shiong Khoo
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000, Cheras, Kuala Lumpur, Malaysia
| | - Sami Ullah
- Department of Chemistry, College of Science, King Khalid University, Abha, 61413, P. O. Box 9004, Saudi Arabia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham, Malaysia, 43500, Semenyih, Selangor Darul Ehsan, Malaysia.
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Liang S, Qin Y, Gao W, Wang M. A lightweight polyurethane-carbon microsphere composite foam for electromagnetic shielding. E-POLYMERS 2022. [DOI: 10.1515/epoly-2022-0023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, we have produced a lightweight foam composite material by a simple freeze-drying method, which is composed of carboxylated multi-walled carbon nanotubes (MWCNTs), mesoporous carbon hollow microspheres (MCHMs), water-based polyurethane (WPU), and polyvinyl alcohol (PVA). MCHMs were prepared by a novel and facile method. We found that the electromagnetic shielding performance of foam composites can be adjusted by adjusting the density of foam composites, and the electromagnetic shielding performance of composites can be enhanced through the synergistic effect of hollow mesoporous carbon and MWCNTs. The composite material with a density of 232.8042 mg·cm−3 and 40 wt% MWCNT has a δ of 30.2 S·m−1 and SE of 23 dB. After adding 10 wt% MCHMs to the composite material, δ reaches 33.2 S·m−1, and SE reaches 28 dB. Both absorption losses accounted for 70%. The increase in the content of MWCNT, the increase in density, and the introduction of MCHMs all have a positive effect on the δ and SE of the composite material.
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Affiliation(s)
- Shaofeng Liang
- School of Resources, Environment and Materials, Guangxi University , Nanning 530000 , Guangxi , China
| | - Yuxuan Qin
- School of Resources, Environment and Materials, Guangxi University , Nanning 530000 , Guangxi , China
| | - Wei Gao
- School of Resources, Environment and Materials, Guangxi University , Nanning 530000 , Guangxi , China
- Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes , Nanning 530000 , Guangxi , China
| | - Muqun Wang
- School of Resources, Environment and Materials, Guangxi University , Nanning 530000 , Guangxi , China
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Guo Y, Qiu H, Ruan K, Zhang Y, Gu J. Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity. NANO-MICRO LETTERS 2021; 14:26. [PMID: 34890012 PMCID: PMC8664909 DOI: 10.1007/s40820-021-00767-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/02/2021] [Indexed: 05/21/2023]
Abstract
The development of lightweight and integration for electronics requires flexible films with high thermal conductivity and electromagnetic interference (EMI) shielding to overcome heat accumulation and electromagnetic radiation pollution. Herein, the hierarchical design and assembly strategy was adopted to fabricate hierarchically multifunctional polyimide composite films, with graphene oxide/expanded graphite (GO/EG) as the top thermally conductive and EMI shielding layer, Fe3O4/polyimide (Fe3O4/PI) as the middle EMI shielding enhancement layer and electrospun PI fibers as the substrate layer for mechanical improvement. PI composite films with 61.0 wt% of GO/EG and 23.8 wt% of Fe3O4/PI exhibits high in-plane thermal conductivity coefficient (95.40 W (m K)-1), excellent EMI shielding effectiveness (34.0 dB), good tensile strength (93.6 MPa) and fast electric-heating response (5 s). The test in the central processing unit verifies PI composite films present broad application prospects in electronics fields.
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Affiliation(s)
- Yongqiang Guo
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, People's Republic of China
| | - Hua Qiu
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, People's Republic of China.
| | - Kunpeng Ruan
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, People's Republic of China
| | - Yali Zhang
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, People's Republic of China
| | - Junwei Gu
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, People's Republic of China.
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