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Wang C, Shen Y, Cao X, Zheng X, Ren K. High Energy Density in All-Organic Polyimide-Based Composite Film by Doping of Polyvinylidene Fluoride-Based Relaxor Ferroelectrics. Polymers (Basel) 2024; 16:1138. [PMID: 38675056 PMCID: PMC11054177 DOI: 10.3390/polym16081138] [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: 03/02/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Recently, due to the advantages of superior compatibility, fewer interface defects, and a high electric breakdown field, all-organic dielectric composites have attracted significant research interest. In this investigation, we produced all-organic P(VDF-TrFE-CFE) terpolymer/PI (terp/PI) composite films by incorporating a small amount of terpolymer into PI substrates for high energy density capacitor applications. The resulting terp/PI-5 (5% terpolymer) composite films exhibit a permittivity of 3.81 at 1 kHz, which is 18.7% greater than that of pristine PI (3.21). Furthermore, the terp/PI-5 film exhibited the highest energy density (9.67 J/cm3) and a relatively high charge-discharge efficiency (84.7%) among the terp/PI composite films. The energy density of the terp/PI-5 film was increased by 59.8% compared to that of the pristine PI film. The TSDC results and band structure analysis revealed the presence of deeper traps in the terp/PI composites, contributing to the suppression of leakage current and improved charge-discharge efficiency. Furthermore, durability tests confirm the stability of the composite films under extended high-temperature exposure and cycling, establishing their viability for practical applications.
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Affiliation(s)
- Chengwei Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China;
| | - Yue Shen
- Center on Nano Energy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China; (Y.S.); (X.C.); (X.Z.)
| | - Xiaodan Cao
- Center on Nano Energy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China; (Y.S.); (X.C.); (X.Z.)
| | - Xin Zheng
- Center on Nano Energy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China; (Y.S.); (X.C.); (X.Z.)
| | - Kailiang Ren
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China;
- Center on Nano Energy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China; (Y.S.); (X.C.); (X.Z.)
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Jang JK, Kim TH. Fabrication of Tri-Directional Poly(2,5-benzimidazole) Membrane Using Direct Casting for Vanadium Redox Flow Battery. Polymers (Basel) 2023; 15:3577. [PMID: 37688203 PMCID: PMC10490454 DOI: 10.3390/polym15173577] [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: 07/29/2023] [Revised: 08/16/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
In vanadium redox flow batteries (VRFBs), simultaneously achieving high proton conductivity, low vanadium-ion permeability, and outstanding chemical stability using electrolyte membranes is a significant challenge. In this study, we report the fabrication of a tri-directional poly(2,5-benzimidazole) (T-ABPBI) membrane using a direct casting method. The direct-cast T-ABPBI (D-T-ABPBI) membrane was fabricated by modifying the microstructure of the membrane while retaining the chemical structure of ABPBI, having outstanding chemical stability. The D-T-ABPBI membrane exhibited lower crystallinity and an expanded free volume compared to the general solvent-cast T-ABPBI (S-T-ABPBI) membrane, resulting in enhanced hydrophilic absorption capabilities. Compared to the S-T-ABPBI membrane, the enhanced hydrophilic absorption capability of the D-T-ABPBI membrane resulted in a decrease in the specific resistance (the area-specific resistance of S-T-ABPBI and D-T-ABPBI membrane is 1.75 and 0.98 Ωcm2, respectively). Additionally, the D-T-ABPBI membrane showed lower vanadium permeability (3.40 × 10-7 cm2 min-1) compared to that of Nafion 115 (5.20 × 10-7 cm2 min-1) due to the Donnan exclusion effect. Owing to the synergistic effects of these properties, the VRFB assembled with D-T-ABPBI membrane had higher or equivalent coulomb efficiencies (>97%) and energy efficiencies (70-91%) than Nafion 115 at various current densities (200-40 mA cm-2). Furthermore, the D-T-ABPBI membrane exhibited stable performance for over 300 cycles at 100 mA cm-2, suggesting its outstanding chemical stability against the highly oxidizing VO2+ ions during practical VRFB operation. These results indicate that the newly fabricated D-T-ABPBI membranes are promising candidates for VRFB application.
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Affiliation(s)
- Jung-Kyu Jang
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Tae-Ho Kim
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
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Shi L, Bao F, Liu Y, Li H, Zhu T, Liu H, Yu J, Qiao Y, Zhu C, Xu J. Design and Synthesis of Low Dielectric Poly(aryl ether ketone) from Incorporation Bulky Fluorene Groups and Regular Hydroquinone Structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11439-11447. [PMID: 37524048 DOI: 10.1021/acs.langmuir.3c01307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
To decrease the dipole polarization rate and reduce the dielectric constant of poly(aryl ether ketone) (PAEK) resin, 1,4-di(4-fluorobenzoyl) cyclohexane (DFBCH), a weakly polarizing cyclohexane-based monomer, was designed and synthesized as the primary reactant. The bulky fluorene group was incorporated to increase the free volume of the resin, further reducing the dielectric constant. Additionally, hydroquinone with a symmetric and regular structure was utilized to enhance the molecular chain's regularity and reduce dipole relaxation, further lowering the resin's dielectric constant and dielectric loss. The PFQEKs series resins exhibited excellent thermal stability with glass transition temperature (Tg) ranging from 222 to 239 °C and 5% weight loss (Td5%) ranging from 458 to 463 °C, with different monomer ratios. As the hydroquinone content increased, the dielectric constant (Dk) and dielectric loss (Df) of the resin decreased significantly, with Dk ranging from 2.92 to 2.77 and Df ranging from 0.011 to 0.008 at 10 GHz.
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Affiliation(s)
- Ludi Shi
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Feng Bao
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yanxing Liu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Hong Li
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Tang Zhu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Huichao Liu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jiali Yu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yongna Qiao
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Caizhen Zhu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jian Xu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
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Li Y, Cao Y, Wu S, Ju Y, Zhang X, Lu C, Sun W. Manipulative pore-formation of polyimide film for tuning the dielectric property via breath figure method. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Minu S, Ramani R, Shekar RI, Kotresh TM, Padaki NV. Influence of dodecyl surfactants on the cross-linking, plasticization and damping behavior of epoxy novolac resins. SOFT MATTER 2022; 18:7380-7393. [PMID: 36125086 DOI: 10.1039/d2sm01126c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of modified epoxy novolac resins (ENRs) were prepared by incorporating dodecyl chain surfactants with polar groups such as amine, carboxylic acid, phenol, resorcinol and benzene sulfonic acid. Except for the case of benzene sulfonic acid, no macrophase separation is seen in any of the modified ENRs. The addition of these dodecyl surfactants to ENR hinders the cross-linking reaction as revealed from their dynamic and isothermal DSC curing measurements and reduced glass transition temperatures (Tg). The cross-link density evaluated from the storage modulus (E') in the rubbery region using DMTA measurements is found to be low with the addition of surfactants in agreement with their plasticization behavior. The stiffness of the materials obtained at low temperatures showed a moderate increase for ENRs with carboxylic acid and phenol surfactants. Upon heating, their storage modulus drops at low temperatures compared to ENR supporting the mechanism of plasticization in them. This high value of E' for the plasticized material in the glassy phase is different from the generally known behavior. Such unusually high storage modulus together with increased 'd' spacing from the XRD results seems to indicate 'partial segmental confinement' of epoxy chains. It is believed that high damping obtained in these two materials is due to 'partial segmental confinement' of epoxy chains because of interaction with lauric acid and phenolic surfactants and the associated internal and interfacial friction in them. Dielectric relaxation measurements support the plasticization process based on the high dielectric loss and ionic conductivity in the surfactant modified ENR, as compared to the pristine ones.
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Affiliation(s)
- Sathiadasan Minu
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Ramasubbu Ramani
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Ramakrishna Indu Shekar
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Teggina Math Kotresh
- Defence Bio-Engineering and Electromedical Laboratory (DEBEL), Defence Research and Development Organization (DRDO), ADE Campus, C. V. Raman Nagar, Bangalore-560 093, India.
| | - Naveen Vijay Padaki
- Central Silk Technological Research Institute (CSTRI), Central Silk Board (CSB), BTM Layout, Bangalore-560 068, India
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Chen YC, Lin YC, Chang EC, Kuo CC, Ueda M, Chen WC. Investigation of the structure–dielectric relationship of polyimides with ultralow dielectric constant and dissipation factors using density functional theory. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Filip D, Macocinschi D, Zaltariov MF, Ciubotaru BI, Bargan A, Varganici CD, Vasiliu AL, Peptanariu D, Balan-Porcarasu M, Timofte-Zorila MM. Hydroxypropyl Cellulose/Pluronic-Based Composite Hydrogels as Biodegradable Mucoadhesive Scaffolds for Tissue Engineering. Gels 2022; 8:gels8080519. [PMID: 36005120 PMCID: PMC9407387 DOI: 10.3390/gels8080519] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/12/2022] [Accepted: 08/16/2022] [Indexed: 11/16/2022] Open
Abstract
Recently, the development of new materials with the desired characteristics for functional tissue engineering, ensuring tissue architecture and supporting cellular growth, has gained significant attention. Hydrogels, which possess similar properties to natural cellular matrixes, being able to repair or replace biological tissues and support the healing process through cellular proliferation and viability, are a challenge when designing tissue scaffolds. This paper provides new insights into hydrogel-based polymeric blends (hydroxypropyl cellulose/Pluronic F68), aiming to evaluate the contributions of both components in the development of new tissue scaffolds. In order to study the interactions within the hydrogel blends, FTIR and 1HNMR spectroscopies were used. The porosity and the behavior in moisture medium were highlighted by SEM and DVS analyses. The biodegradability of the hydrogel blends was studied in a simulated biological medium. The hydrogel composition was determinant for the scaffold behavior: the HPC component was found to have a great influence on the BET and GAB areas, on the monolayer values estimated from sorption-desorption isotherms and on mucoadhesivity on small intestine mucosa, while the Pluronic F68 component improved the thermal stability. All blends were also found to have good mechanical strength and increased biocompatibility on the NHDF cell line. Based on their particular compositions and increased mucoadhesivity on small intestine mucosa, these polymeric blends could be effective in the repair or recovery of damaged cell membranes (due to the contribution of Pluronic F68) or in control drug-delivery intestinal formulations.
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Affiliation(s)
- Daniela Filip
- Laboratory of Physical Chemistry of Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Doina Macocinschi
- Laboratory of Physical Chemistry of Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Mirela-Fernanda Zaltariov
- Department of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
- Correspondence:
| | - Bianca-Iulia Ciubotaru
- Department of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Alexandra Bargan
- Department of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Cristian-Dragos Varganici
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Ana-Lavinia Vasiliu
- Laboratory of Functional Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Dragos Peptanariu
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Mihaela Balan-Porcarasu
- Laboratory of Polycondensation and Thermostable Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487 Iasi, Romania
| | - Mihaela-Madalina Timofte-Zorila
- Saint Spiridon County Hospital, Bulevardul Independentei 1, “Gr. T. Popa” University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
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Hu Z, Liu X, Ren T, Saeed HAM, Wang Q, Cui X, Huai K, Huang S, Xia Y, Fu K, Zhang J, Chen Y. Research progress of low dielectric constant polymer materials. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2021-0338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The advent of high frequency communication era presents new challenges for further development of dielectric polymer materials. In the field of communication, efficient signal transmission is critical. The lower the dielectric constant of the dielectric material used, the lower the signal delay and the higher the signal fidelity. The preparation of polymer materials with low dielectric constant or reduce the dielectric constant of polymer materials becomes a key research topic. Summarizing past progress and providing perspective, this paper primarily discusses the intrinsic low dielectric polymers, fluorine doped low dielectric polymers, and microporous low dielectric polymers, while predicting the research trend of low dielectric materials.
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Affiliation(s)
- Zhendong Hu
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
| | - Xueqing Liu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education and Flexible Display Materials and Technology Co-Innovation Centre of Hubei Province , Jianghan University , Wuhan 430056 , China
| | - Tianli Ren
- Mississippi Polymer Institute, The University of Southern Mississippi , Hattiesburg , MS 39406 , USA
| | - Haroon A. M. Saeed
- The Centre of Fibres, Papers, and Recycling, Faculty of Industries Engineering and Technology , University of Gezira , P.O. Box: 20 , Sudan , Shanghai , China
| | - Quan Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
| | - Xin Cui
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
| | - Kai Huai
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
| | - Shuohan Huang
- Engineering Research Center of Technical Textiles, Ministry of Education, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , College of Materials Science and Engineering, College of Science, Donghua University , Shanghai , China
| | - Yuming Xia
- Engineering Research Center of Technical Textiles, Ministry of Education, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , College of Materials Science and Engineering, College of Science, Donghua University , Shanghai , China
| | - Kun(Kelvin) Fu
- Department of Mechanical Engineering , University of Delaware , Newark , DE 19716 , USA
| | - Jianming Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
| | - Yuwei Chen
- Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics , Qingdao University of Science & Technology , Qingdao City , 266042 , P. R. China
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Impedance and Dielectric Properties of PVC:NH 4I Solid Polymer Electrolytes (SPEs): Steps toward the Fabrication of SPEs with High Resistivity. MATERIALS 2022; 15:ma15062143. [PMID: 35329595 PMCID: PMC8950392 DOI: 10.3390/ma15062143] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 02/04/2023]
Abstract
In the present article, a simple technique is provided for the fabrication of a polymer electrolyte system composed of polyvinyl chloride (PVC) and doped with varying content of ammonium iodide (NH4I) salt using solution-casting methodology. The influences of NH4I on the structural, electrochemical, and electrical properties of PVC have been investigated using X-ray diffraction, electrochemical impedance spectroscopy (EIS), and dielectric properties. The X-ray study reveals the amorphous nature of the polymer-salt complex. The EIS measurement revealed an ionic conductivity of 5.57 × 10-10 S/cm for the electrolyte containing 10 wt.% of salt. Our hypothesis is provided, which demonstrated the likelihood of designing highly resistive solid electrolytes using the concept of a polymer electrolyte. Here, the results showed that the resistivity of the studied samples is not dramatically decreased with increasing NH4I. Bode plots distinguish the decrease in resistance or impedance with increasing salt contents. Dielectric measurements revealed a decrease in the dielectric constant with the increase of NH4I content in the PVC polymer. The relaxation time and dielectric properties of the electrolytes confirmed their non-Debye type behavior. This pattern has been validated by the existence of an incomplete semicircle in the Argand plot. Insulation materials with low εr have found widespread applications in electronic devices due to the reduction in delay, power dissipation, and crosstalk. In addition, an investigation of real and imaginary parts of electric modulus leads to the minimized electrode polarization being reached.
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Cao T, Shi Y, Li X, Peng J, Liu X, Huang Y. Dual cross-linking strategy to prepare fluorine-containing poly(arylene ether nitrile) films with a low dielectric constant and ultra-low water uptake. Polym Chem 2022. [DOI: 10.1039/d2py01146h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dual cross-linked networks based on fluorine-containing poly(arylene ether nitrile) were constructed by a simple thermal treatment for obtaining flexible low-dielectric materials with excellent comprehensive performance.
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Affiliation(s)
- Tong Cao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Yifei Shi
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Xiaoyu Li
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Jun Peng
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, 611731, China
| | - Yumin Huang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China
- Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, 611731, China
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12
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Lian R, Lei X, Chen Y, Zhang Q. Hyperbranched‐polysiloxane‐based hyperbranched polyimide films with low dielectric permittivity and high mechanical and thermal properties. J Appl Polym Sci 2019. [DOI: 10.1002/app.47771] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ruhe Lian
- Department of Applied Chemistry, MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary ConditionsSchool of Natural and Applied Sciences, Northwestern Polytechnical University Xi'an China
| | - Xingfeng Lei
- Department of Applied Chemistry, MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary ConditionsSchool of Natural and Applied Sciences, Northwestern Polytechnical University Xi'an China
| | - Yanhui Chen
- Department of Applied Chemistry, MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary ConditionsSchool of Natural and Applied Sciences, Northwestern Polytechnical University Xi'an China
| | - Qiuyu Zhang
- Department of Applied Chemistry, MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary ConditionsSchool of Natural and Applied Sciences, Northwestern Polytechnical University Xi'an China
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13
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Song N, Shi K, Yu H, Yao H, Ma T, Zhu S, Zhang Y, Guan S. Decreasing the dielectric constant and water uptake of co-polyimide films by introducing hydrophobic cross-linked networks. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.02.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Ningaraju S, Hegde VN, Prakash AG, Ravikumar H. Free volume dependence on electrical properties of Poly (styrene co-acrylonitrile)/Nickel oxide polymer nanocomposites. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Positronium probes free volume to identify para- and meta-aramid fibers and correlation with mechanical strength. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.11.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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O'Keefe S, Li Y, Luscombe CK. Solution processed low-k dielectric core-shell nanoparticles for additive manufacturing of microwave devices. J Appl Polym Sci 2017. [DOI: 10.1002/app.45335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Shamus O'Keefe
- Materials Science and Engineering Department; University of Washington; Seattle Washington 98195-2120
| | - Yilin Li
- Materials Science and Engineering Department; University of Washington; Seattle Washington 98195-2120
| | - Christine K. Luscombe
- Materials Science and Engineering Department; University of Washington; Seattle Washington 98195-2120
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17
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Enhanced Thermal Conductivity and Dielectric Properties of Iron Oxide/Polyethylene Nanocomposites Induced by a Magnetic Field. Sci Rep 2017; 7:3072. [PMID: 28596536 PMCID: PMC5465097 DOI: 10.1038/s41598-017-03273-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 04/26/2017] [Indexed: 11/08/2022] Open
Abstract
Iron Oxide (Fe3O4) nanoparticles were deposited on the surface of low density polyethylene (LDPE) particles by solvothermal method. A magnetic field was introduced to the preparation of Fe3O4/LDPE composites, and the influences of the magnetic field on thermal conductivity and dielectric properties of composites were investigated systematically. The Fe3O4/LDPE composites treated by a vertical direction magnetic field exhibited a high thermal conductivity and a large dielectric constant at low filler loading. The enhancement of thermal conductivity and dielectric constant is attributed to the formation of the conductive chains of Fe3O4 in LDPE matrix under the action of the magnetic field, which can effectively enhance the heat flux and interfacial polarization of the Fe3O4/LDPE composites. Moreover, the relatively low dielectric loss and low conductivity achieved are attributed to the low volume fraction of fillers and excellent compatibility between Fe3O4 and LDPE. Of particular note is the dielectric properties of Fe3O4/LDPE composites induced by the magnetic field also retain good stability across a wide temperature range, and this contributes to the stability and lifespan of polymer capacitors. All the above-mentioned properties along with the simplicity and scalability of the preparation for the polymer nanocomposites make them promising for the electronics industry.
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Singh VP, Ramani R, Singh AS, Mishra P, Pal V, Saraiya A. Dielectric and conducting behavior of pyrene functionalized PANI/P(VDF-co-HFP) blend. J Appl Polym Sci 2016. [DOI: 10.1002/app.44077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Veer Pal Singh
- Polymer Science Division, DMSRDE; G.T. Road Kanpur 208 013 India
| | - Ramasubbu Ramani
- Polymer Science Division, DMSRDE; G.T. Road Kanpur 208 013 India
| | | | - Preeti Mishra
- Polymer Science Division, DMSRDE; G.T. Road Kanpur 208 013 India
| | - Vijay Pal
- Polymer Science Division, DMSRDE; G.T. Road Kanpur 208 013 India
| | - Amit Saraiya
- Nanoscience Technology Division, DMSRDE; G.T. Road Kanpur 208 013 India
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19
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Prateek, Thakur VK, Gupta RK. Recent Progress on Ferroelectric Polymer-Based Nanocomposites for High Energy Density Capacitors: Synthesis, Dielectric Properties, and Future Aspects. Chem Rev 2016; 116:4260-317. [PMID: 27040315 DOI: 10.1021/acs.chemrev.5b00495] [Citation(s) in RCA: 404] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Dielectric polymer nanocomposites are rapidly emerging as novel materials for a number of advanced engineering applications. In this Review, we present a comprehensive review of the use of ferroelectric polymers, especially PVDF and PVDF-based copolymers/blends as potential components in dielectric nanocomposite materials for high energy density capacitor applications. Various parameters like dielectric constant, dielectric loss, breakdown strength, energy density, and flexibility of the polymer nanocomposites have been thoroughly investigated. Fillers with different shapes have been found to cause significant variation in the physical and electrical properties. Generally, one-dimensional and two-dimensional nanofillers with large aspect ratios provide enhanced flexibility versus zero-dimensional fillers. Surface modification of nanomaterials as well as polymers adds flavor to the dielectric properties of the resulting nanocomposites. Nowadays, three-phase nanocomposites with either combination of fillers or polymer matrix help in further improving the dielectric properties as compared to two-phase nanocomposites. Recent research has been focused on altering the dielectric properties of different materials while also maintaining their superior flexibility. Flexible polymer nanocomposites are the best candidates for application in various fields. However, certain challenges still present, which can be solved only by extensive research in this field.
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Affiliation(s)
- Prateek
- Department of Chemical Engineering, Indian Institute of Technology Kanpur , Kanpur 208016, India
| | - Vijay Kumar Thakur
- School of Mechanical and Materials Engineering, Washington State University , Pullman, Washington 99164, United States
| | - Raju Kumar Gupta
- Department of Chemical Engineering, Indian Institute of Technology Kanpur , Kanpur 208016, India.,DST Thematic Unit of Excellence on Soft Nanofabrication and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur , Kanpur 208016, India
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Pethrick RA, Santamaria-Mendia F. Gas permeation and positron annihilation lifetime spectroscopy of poly(ether imide)s with varying ether. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- R. A. Pethrick
- WestCHEM, Department of Pure and Applied Chemistry, Thomas Graham Building; University of Strathclyde; Glasgow G1 1XL UK
| | - F. Santamaria-Mendia
- WestCHEM, Department of Pure and Applied Chemistry, Thomas Graham Building; University of Strathclyde; Glasgow G1 1XL UK
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Dong W, Guan Y, Shang D. Novel soluble polyimides containing pyridine and fluorinated units: preparation, characterization, and optical and dielectric properties. RSC Adv 2016. [DOI: 10.1039/c6ra00322b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
To acquire low dielectric constant polyimide films with good mechanical and thermal properties and low CTE applied in microelectronic fields, three novel polyimides containing pyridine and –C(CF3)2– groups were firstly designed and synthesized.
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Affiliation(s)
- Weibing Dong
- School of Life Science
- Liaoning Normal University
- Dalian 116081
- China
- Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery
| | - Yue Guan
- School of Life Science
- Liaoning Normal University
- Dalian 116081
- China
- Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery
| | - Dejing Shang
- School of Life Science
- Liaoning Normal University
- Dalian 116081
- China
- Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery
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