1
|
Mohammadpour S, Moghadam PN, Gharbani P. Preparation, characterization, and photocatalytic performance of a PVDF/cellulose membrane modified with nano Fe 3O 4 for removal of methylene blue using RSM under visible light. RSC Adv 2024; 14:8801-8809. [PMID: 38495979 PMCID: PMC10941093 DOI: 10.1039/d3ra08599f] [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: 12/16/2023] [Accepted: 03/07/2024] [Indexed: 03/19/2024] Open
Abstract
In this work, a polymeric membrane-based polyvinylidene fluoride coated with cellulose and loaded with iron oxide nanoparticles (PVDF/cellulose/Fe3O4) was synthesized and was characterized using FESEM, XRD, AFM, and contact angle measurements. The activity and modification of the PVDF/cellulose/Fe3O4 membrane under visible light for the removal of methylene blue were studied using the central composite design. The effect of influential variables such as pH, methylene blue concentration, amount of Fe3O4 in the membrane, and irradiation time on MB removal was investigated. Analysis of variance was used to determine the significance of experimental factors and their interactions. About 72.5% methylene blue removal using the PVDF/cellulose/Fe3O4 membrane under visible light was achieved at optimum conditions of a pH of 9, methylene blue concentration of 600 mg L-1, Fe3O4 amount of 0.03 g, and irradiation time of 117 min. Finally, results confirmed that the proposed membrane has good performance for methylene blue removal under visible light.
Collapse
Affiliation(s)
- Shaghayegh Mohammadpour
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University Urmia 57153-165 Iran
| | - Peyman Najafi Moghadam
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University Urmia 57153-165 Iran
| | - Parvin Gharbani
- Department Chemistry, Ahar Branch, Islamic Azad University Ahar Iran
- Industrial Nanotechnology Research Center, Tabriz Branch, Islamic Azad University Tabriz Iran
| |
Collapse
|
2
|
Kar E, Ghosh P, Pratihar S, Tavakoli M, Sen S. Nature-Driven Biocompatible Epidermal Electronic Skin for Real-Time Wireless Monitoring of Human Physiological Signals. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20372-20384. [PMID: 37067294 DOI: 10.1021/acsami.3c00509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Wearable bioelectronic patches are creating a transformative effect in the health care industry for human physiological signal monitoring. However, the use of such patches is restricted due to the unavailability of a proper power source. Ideal biodevices should be thin, soft, robust, energy-efficient, and biocompatible. Here, we report development of a flexible, lightweight, and biocompatible electronic skin-cum-portable power source for wearable bioelectronics by using a processed chicken feather fiber. The device is fabricated with a novel, breathable composite of biowaste chicken feather and organic poly(vinylidene fluoride) (PVDF) polymer, where the chicken feather fiber constitutes the "microbones" of the PVDF, enhancing its piezoelectric phase content, biocompatibility, and crystallinity. Thanks to its outstanding pressure sensitivity, the fabricated electronic skin is used for the monitoring of different human physiological signals such as body motion, finger and joint bending, throat activities, and pulse rate with excellent sensitivity. A wireless system is developed to remotely receive the different physiological signals as captured by the electronic skin. We also explore the capabilities of the device as a power source for other small electronics. The piezoelectric energy harvesting device can harvest a maximum output voltage of ∼28 V and an area power density of 1.4 μW·cm-2 from the human finger imparting. The improved energy harvesting property of the device is related to the induced higher fraction of the electroactive phase in the composite. The easy process ability, natural biocompatibility, superior piezoelectric performance, high pressure sensitivity, and alignment toward wireless transmission of the captured data make the device a promising candidate for wearable bioelectronic patches and power sources.
Collapse
Affiliation(s)
- Epsita Kar
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India
| | - Puja Ghosh
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India
| | - Shewli Pratihar
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India
| | - Mahmoud Tavakoli
- Institute of Systems and Robotics, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Shrabanee Sen
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India
| |
Collapse
|
3
|
Padurariu L, Horchidan N, Ciomaga CE, Curecheriu LP, Lukacs VA, Stirbu RS, Stoian G, Botea M, Florea M, Maraloiu VA, Pintilie L, Rotaru A, Mitoseriu L. Influence of Ferroelectric Filler Size and Clustering on the Electrical Properties of (Ag-BaTiO 3)-PVDF Sub-Percolative Hybrid Composites. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5744-5759. [PMID: 36651701 DOI: 10.1021/acsami.2c15641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The paper presents a study concerning the role of ferroelectric filler size and clustering in the dielectric properties of 20%BaTiO3-80%PVDF and of 20% (2%Ag-98%BaTiO3)-PVDF hybrid nanocomposites. By finite element calculations, it was shown that using fillers with ε > 103 does not provide a permittivity rise in the composites and the effective dielectric constant tends to saturate to specific values determined by the filler size and agglomeration degree. Irrespective of the ferroelectric filler sizes, the addition of metallic ultrafine nanoparticles (Ag) results in permittivity intensification and the effect is even stronger if the metallic nanoparticles are connected to a higher degree with the ferroelectric particles' surfaces. When using coarse ferroelectric fillers, the probability of clustering is higher, thus favoring the permittivity increase by field concentration in small regions close to the interfaces separating dissimilar materials. The modeling results were validated by an experimental dielectric analysis performed in a series of PVDF-based thick films with the same amount of BaTiO3 fillers or with Ag-BaTiO3 hybrid fillers. Similar trends as predicted by simulations were found experimentally but with slightly higher permittivity values which were assigned to the modifications of the polymer phase composition due to the presence of nanofillers and the local sample inhomogeneity (the presence of clustering, in particular for coarse BaTiO3 grains), which create regions with enhanced local fields.
Collapse
Affiliation(s)
- Leontin Padurariu
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - Nadejda Horchidan
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - Cristina Elena Ciomaga
- Department of Exact & Natural Sciences, Institute of Interdisciplinary Research, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - Lavinia Petronela Curecheriu
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - Vlad Alexandru Lukacs
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - Radu Stefan Stirbu
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| | - George Stoian
- National Institute of R&D for Technical Physics, 700050Iasi, Romania
| | - Mihaela Botea
- National Institute of Materials Physics, Atomistilor 405A, 077125Magurele, Romania
| | - Mihaela Florea
- National Institute of Materials Physics, Atomistilor 405A, 077125Magurele, Romania
| | | | - Lucian Pintilie
- National Institute of Materials Physics, Atomistilor 405A, 077125Magurele, Romania
| | - Aurelian Rotaru
- Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan Cel Mare University, 720229Suceava, Romania
| | - Liliana Mitoseriu
- Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza University of Iasi, Bv. Carol I, No. 11, 700506Iasi, Romania
| |
Collapse
|
4
|
Chan Lee J, Hee Park C, Sang Kim C. Amplified piezoelectric response with β-phase formation in PVDF blended 3D cotton type nanofibers for osteogenic differentiation. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
5
|
Anand S, Pauline S. Effective lightweight, flexible and ultrathin PVDF/rGO/Ba 2Co 2Fe 12O 22composite films for electromagnetic interference shielding applications. NANOTECHNOLOGY 2021; 32:475707. [PMID: 33691294 DOI: 10.1088/1361-6528/abed75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
In this study, we developed a simple and cost-effective solvent film casting method to fabricate ultrathin, flexible and lightweight polyvinylidenefluoride (PVDF)-based composites that provide high electromagnetic interference (EMI) shielding performance. Y-type barium hexaferrite with general formula Ba2Co2Fe12O22was first synthesized by the sol-gel autocombustion method and then reduced graphene oxide (rGO) was prepared by modified Hummer's method. The crystal structure, morphology, elemental surface analysis and magnetic properties of the samples were systematically investigated using x-ray diffraction spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, high-resolution scanning electron microscopy, energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy and vibrating sample magnetometry. Then, the complex permittivity, complex permeability and EMI shielding properties of the flexible PVDF/rGO/Ba2Co2Fe12O22composite films with two different amounts of Ba2Co2Fe12O22NP content and a fixed amount of rGO content were investigated using a vector network analyzer. The structural characterizations of the resultant composite films showed the formation of an electroactiveβ-phase of PVDF with addition of Ba2Co2Fe12O22nanoparticles and rGO content. The enhancement of theβ-phase in the PVDF/rGO/Ba2Co2Fe12O22nanocomposites was explained from a physicochemical viewpoint. Furthermore, the electrically conductive and magnetic properties of PVDF composite films incorporating rGO and Ba2Co2Fe12O22NPs exhibited a high EMI shielding effectiveness of 25.63 dB, with an absorption-dominated shielding feature in the 8-12 GHz region. The enhanced absorption was attributed to the electrostatic interaction induced by theβ-phase fraction in the PVDF matrix, and subsequently from multiple reflections and magnetic loss originating from the synergetic effect of rGO and Ba2Co2Fe12O22NPs. This study introduces a low-cost and scalable method for the design of novel, lightweight, flexible and efficient EMI shielding composite films with promising prospects for application in the construction, electronics and aerospace fields.
Collapse
Affiliation(s)
- S Anand
- Department of Physics, Loyola College (Autonomous), University of Madras, Chennai-600034, India
| | - S Pauline
- Department of Physics, Loyola College (Autonomous), University of Madras, Chennai-600034, India
| |
Collapse
|
6
|
Lee JC, Suh IW, Park CH, Kim CS. Polyvinylidene fluoride/silk fibroin-based bio-piezoelectric nanofibrous scaffolds for biomedical application. J Tissue Eng Regen Med 2021; 15:869-877. [PMID: 34339581 DOI: 10.1002/term.3232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/13/2021] [Accepted: 06/29/2021] [Indexed: 11/08/2022]
Abstract
Since the discovery that applying electrical stimulation can promote cell growth, proliferation, and tissue regeneration, research on bio-piezoelectric materials is being actively conducted. In this study, a composite material was prepared by mixing polyvinylidene fluoride (PVDF), a conventional piezoelectric polymer, and silk fibroin (SF), a natural piezoelectric material that recently attracting attention. These two polymers were fabricated into a composite fiber mat using electrospinning technology. To find optimal conditions, SF was added in various ratios to prepare electrospun PVDF/SF mats. The characteristics of these PVDF/SF composite mats were then analyzed through various evaluations and in vitro studies. It was confirmed that PVDF and SF were successfully mixed through scanning electron microscope images and structural analysis such as x-ray diffractometer and Fourier transform infrared. The results revealed that adding an appropriate amount of SF could improve the tensile strength, enhance cell proliferation rate, and generate a voltage similar to that of a conventional PVDF-only electrospinning mat. Such fabricated electrospun PVDF/SF composite mats are expected to be useful in the bio-piezoelectric field because they can maintain piezoelectricity while compensating for the shortcomings, such as low physical properties, of a PVDF electrospun mat.
Collapse
Affiliation(s)
- Jeong Chan Lee
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea
| | - Il Won Suh
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea
| | - Chan Hee Park
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea.,Division of Mechanical Design Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea.,Eco-friendly Machine Parts Design Research Center, Jeonbuk National University, Jeonju, Korea
| | - Cheol Sang Kim
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea.,Division of Mechanical Design Engineering, Graduate School, Jeonbuk National University, Jeonju, Korea.,Eco-friendly Machine Parts Design Research Center, Jeonbuk National University, Jeonju, Korea
| |
Collapse
|
7
|
Structure–property study of pristine and dehydrofluorinated poly(vinylidene fluoride) using density functional theory. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02766-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
Enhanced piezoelectricity properties of reduced graphene oxide (RGO) loaded polyvinylidene fluoride (PVDF) nanocomposite films for nanogenerator application. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02323-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Yu S, Xiong J, Wu D, Lü X, Yao Z, Xu S, Tang J. Pyrolysis characteristics of cathode from spent lithium-ion batteries using advanced TG-FTIR-GC/MS analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40205-40209. [PMID: 32661975 DOI: 10.1007/s11356-020-10108-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
Thermal treatment offers an alternative method for the separation of Al foil and cathode materials during spent lithium-ion batteries (LIBs) recycling. In this work, the pyrolysis behavior of cathode from spent LIBs was investigated using advanced thermogravimetric Fourier transformed infrared spectroscopy coupled with gas chromatography-mass spectrometer (TG-FTIR-GC/MS) method. The fate of fluorine present in spent batteries was probed as well. TG analysis showed that the cathode decomposition displayed a three-stage process. The temperatures of maximum mass loss rate were located at 470 °C and 599 °C, respectively. FTIR analysis revealed that the release of CO2 increased as the temperature rose from 195 to 928 °C. However, the evolution of H2O showed a decreasing trend when the temperature increased to above 599 °C. The release of fluoride derivatives also exhibited a decreasing trend, and they were not detected after temperatures increasing to above 470 °C. GC-MS analysis indicated that the release of H2O and CO displayed a similar trend, with larger releasing intensity at the first two stages. The evolution of 1,4-difluorobenzene and 1,3,5-trifluorobenzene also displayed a similar trend-larger releasing intensity at the first two stages. However, the release of CO2 showed a different trend, with the largest release intensity at the third stage, as did the release of 1,2,4-trifluorobenzene, with the release mainly focused at the temperature of 300-400 °C. The release intensities of 1,2,4-trifluorobenzene and 1,3,5-trifluorobenzene were comparable, although smaller than that of 1,4-difluorobenzene. This study will offer practical support for the large-scale recycling of spent LIBs.
Collapse
Affiliation(s)
- Shaoqi Yu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Jingjing Xiong
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Daidai Wu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Xiaoshu Lü
- Department of Electrical Engineering and Energy Technology, University of Vaasa, FIN-65101, Vaasa, Finland
- Department of Civil Engineering, Aalto University, FIN-02130, Espoo, Finland
| | - Zhitong Yao
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China.
| | - Shaodan Xu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Junhong Tang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China.
| |
Collapse
|
10
|
Ferroelectric ceramic dispersion to enhance the β phase of polymer for improving dielectric and ferroelectric properties of the composites. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03372-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
11
|
Shetty S, Mahendran A, Anandhan S. Development of a new flexible nanogenerator from electrospun nanofabric based on PVDF/talc nanosheet composites. SOFT MATTER 2020; 16:5679-5688. [PMID: 32519712 DOI: 10.1039/d0sm00341g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Herein, a flexible piezoelectric nanogenerator composed of electrospun talc/PVDF [poly(vinylidene fluoride)] nanocomposite fabrics has been developed. These nanocomposite fabrics demonstrated enhanced mechanical and piezoelectric properties compared with pristine PVDF nanofabrics. In particular, nanocomposite fabrics with 0.50 wt% talc yielded 89.6% of polar β-phase in the PVDF matrix, thereby augmenting its piezoelectric response. X-ray diffraction, Fourier transform infrared spectroscopy, and differential scanning calorimetry conclusively affirmed the promotion of polar β-phase in the talc/PVDF nanocomposite fabrics. The 0.50 wt% talc/PVDF nanocomposite fabric based nanogenerator produced an open-circuit voltage and power density of 9.1 V and 1.12 μW cm-2, respectively, under repetitive finger tapping mode (under a load of 3.8 N). Furthermore, the nanogenerator was also subjected to frequency modulated-shaker mode, wherein an output voltage of 8.9 V was produced. Improved flexibility, mechanical robustness, and enhanced piezoelectric responsiveness of this nanogenerator could possibly pave the way for its use in portable self-powered devices.
Collapse
Affiliation(s)
- Sawan Shetty
- Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Srinivas Nagar, Mangaluru-575025, India.
| | - Arunjunairaj Mahendran
- Kompetenzzentrum Holz GmbH, W3C, A-9300 St. Veit/Glan, Klagenfurter Strasse 87-89, Linz, Austria
| | - S Anandhan
- Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Srinivas Nagar, Mangaluru-575025, India.
| |
Collapse
|
12
|
Probing the energy conversion process in piezoelectric-driven electrochemical self-charging supercapacitor power cell using piezoelectrochemical spectroscopy. Nat Commun 2020; 11:2351. [PMID: 32393749 PMCID: PMC7214414 DOI: 10.1038/s41467-020-15808-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 03/18/2020] [Indexed: 11/08/2022] Open
Abstract
The design and development of self-charging supercapacitor power cells are rapidly gaining interest due to their ability to convert and store energy in an integrated device. Here, we have demonstrated the fabrication of a self-charging supercapacitor using siloxene sheets as electrodes and siloxene-based polymeric piezofiber separator immobilized with an ionogel electrolyte. The self-charging properties of the fabricated device subjected to various levels of compressive forces showed their ability to self-charge up to a maximum of 207 mV. The mechanism of self-charging process in the fabricated device is discussed via "piezoelectrochemical effect" with the aid of piezoelectrochemical spectroscopy measurements. These studies revealed the direct evidence of the piezoelectrochemical phenomenon involved in the energy conversion and storage process in the fabricated device. This study can provide insight towards understanding the energy conversion process in self-charging supercapacitors, which is of significance considering the state of the art of piezoelectric driven self-charging supercapacitors.
Collapse
|
13
|
Chandran AM, Varun S, Mural PKS. Development of self-poled PVDF/MWNT flexible nanocomposites with a boosted electroactive β-phase. NEW J CHEM 2020. [DOI: 10.1039/d0nj02003f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In the present study, we report a simple fabrication method for poly(vinylidene fluoride) PVDF/MWCNT flexible nanocomposite films with a boosted electroactive phase that enhanced the dielectric and piezoelectric properties.
Collapse
Affiliation(s)
- Akash M. Chandran
- Materials Chemistry and Polymer Technology Group
- Department of Chemical Engineering
- National Institute of Technology Calicut
- India
| | - S. Varun
- Materials Chemistry and Polymer Technology Group
- Department of Chemical Engineering
- National Institute of Technology Calicut
- India
| | - Prasanna Kumar S. Mural
- Materials Chemistry and Polymer Technology Group
- Department of Chemical Engineering
- National Institute of Technology Calicut
- India
| |
Collapse
|
14
|
Ye H, Zhang X, Xu C, Xu L. Few-layer boron nitride nanosheets exfoliated with assistance of fluoro hyperbranched copolymer for poly(vinylidene fluoride-trifluoroethylene) nanocomposite film capacitor. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
Yang S, Wang F, Li X, Wu Y, Chang T, Hu Z, An G. Immobilized ionic liquid induced electroactive β-phase in poly(vinylidene fluoride) thin films. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
16
|
Sutradhar S, Saha S, Javed S. Shielding Effectiveness Study of Barium Hexaferrite-Incorporated, β-Phase-Improved Poly(vinylidene fluoride) Composite Film: A Metamaterial Useful for the Reduction of Electromagnetic Pollution. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23701-23713. [PMID: 31187625 DOI: 10.1021/acsami.9b05122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The present work reports the high electromagnetic interference (EMI) shielding effectiveness of ∼-93.5 dB at 8.63 GHz and -97.6 dB at 8.61 GHz in the X- and Ku-bands for 10 and 20 wt % of barium hexaferrite (BaH) nanoparticle-loaded poly(vinylidene fluoride) (PVDF)-based composite films with a thickness of ∼0.210 and 0.260 mm, respectively. BaH-PVDF composite films with a layer structure have been considered in the present report in order to establish an excellent EMI shielding material for the suppression of electromagnetic pollution, with good control on flexibility, surface area, and thickness. Structural and morphological measurements reveal that the polar β-phase crystallization of the BaH-PVDF composite films has been enhanced in comparison to the pure PVDF film, and these measurements also reveal the influence of BaH nanoparticles on structural alteration from nonpolar α-phase to the polar/electroactive β-phase of the PVDF matrix. The resultant BaH-PVDF composite films produce multiple interfaces between magnetic BaH nanoparticles and β-phase-enriched electroactive PVDF, which plays the most significant role for the enhancement of the EMI shielding effectiveness (SE) in the microwave/GHz frequency range. This high value of the EMI SE with >99.999999999% attenuation has not been found so far in the PVDF-based composite materials by anyone else. This particular feature of BaH-PVDF composite materials suggests that the BaH-PVDF composite films can be considered as the most useful ones for the fabrication of lightweight, flexible, and thickness-controlled EMI shielding materials for the reduction of pollution created by the electromagnetic waves in the microwave/GHz frequency region.
Collapse
Affiliation(s)
| | - Suman Saha
- Department of Physics , Amity University , Kolkata 700156 , India
| | - Sana Javed
- Department of Physics , Amity University , Kolkata 700156 , India
| |
Collapse
|
17
|
Kar E, Bose N, Dutta B, Mukherjee N, Mukherjee S. Ultraviolet- and Microwave-Protecting, Self-Cleaning e-Skin for Efficient Energy Harvesting and Tactile Mechanosensing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17501-17512. [PMID: 31007019 DOI: 10.1021/acsami.9b06452] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Smart, self-powered, and wearable e-skin that mimics the pressure sensing property of the human skin is indispensable to boost up cutting edge robotics, artificial intelligence, prosthesis, and health-care monitoring technologies. Here, fabrication of a facile and flexible hybrid piezoelectric e-skin (HPES) with multifunctions of tactile mechanosensing, energy harvesting, self-cleaning, ultraviolet (UV)-protecting, and microwave shielding properties is reported. The principal block of the HPES is an SnO2 nanosheets@SiO2 (silica-encapsulated tin oxide nanosheets)/poly(vinylidene fluoride) (PVDF) nanocomposite (SS)-based PES acting as a single unit for simultaneous energy harvesting and tactile mechanosensing. Gentle human finger imparting onto the PES showed outstanding energy conversion efficiency (16.7%) with high power density (550 W·m-3) and current density (0.40 μA·cm-2). This device can generate high enough electrical power to directly drive portable electronics like a light-emitting diode (LED) panel (consisting of 85 commercial LEDs) and to charge up capacitors very rapidly. Thin PES mechanosensors demonstrated promising performance for quantitatively detecting static and dynamic pressure stimuli with a high sensitivity of 0.99 V·kPa-1 and a short response time of 1 ms. PES was also integrated to a health-data glove for precisely monitoring and discriminating fine motions of proximal interphalangeal, metacarpophalangeal, and distal interphalangeal joints of a human finger and bending motion of different human fingers. A (4 × 4) sensing matrix of PES was successfully employed to detect the spatial distribution of static pressure stimuli. The sensing matrix can precisely record the shape and size of an object placed onto it. PES was encapsulated with a nanocomposite film for providing self-cleaning and UV and microwave protection capability to the HPES. The hydrophobic SS film wrapping (water drop contact angle ∼85.6°) of the HPES enables the self-cleaning feature and makes HPES resistive against water and dirt. The HPES was integrated with in-house-made robotic hands, and the responses of the sensors due to grabbing of an object were evaluated. This work explores new prospects for UV- and microwave-protective, self-cleaning e-skin for energy harvesting and mechanosensation, which can eventually boost up the self-powered electronics, robotics, real-time health-care monitoring, and artificial intelligence technologies.
Collapse
Affiliation(s)
| | - Navonil Bose
- Department of Physics , Supreme Knowledge Foundation Group of Institutions , Hooghly 712139 West Bengal , India
| | | | | | | |
Collapse
|
18
|
Parangusan H, Ponnamma D, AlMaadeed MAA. Toward High Power Generating Piezoelectric Nanofibers: Influence of Particle Size and Surface Electrostatic Interaction of Ce-Fe 2O 3 and Ce-Co 3O 4 on PVDF. ACS OMEGA 2019; 4:6312-6323. [PMID: 31459771 PMCID: PMC6648750 DOI: 10.1021/acsomega.9b00243] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 02/25/2019] [Indexed: 05/28/2023]
Abstract
Development of flexible piezoelectric nanogenerator (PENG) is a real challenge for the next-generation energy-harvesting applications. In this paper, we report highly flexible PENGs based on poly(vinylidene fluoride) (PVDF)/2 wt % Ce-Fe2O3 and PVDF/2 wt % Ce-Co3O4 nanocomposite fibers. The incorporation of magnetic Ce-Fe2O3 and Ce-Co3O4 greatly affects the structural properties of PVDF nanofibers, especially the polymeric β and γ phases. In addition, the new composites enhanced the interfacial compatibility through electrostatic filler-polymer interactions. Both PVDF/Ce-Fe2O3 and PVDF/Ce-Co3O4 nanofibers-based PENGs, respectively, produce peak-to-peak output voltages of 20 and 15 V, respectively, with the corresponding output currents of 0.010 and 0.005 μA/cm2 under the force of 2.5 N. Enhanced output performance of the flexible nanogenerator is correlated with the electroactive polar phases generated within the PVDF, in the presence of the nanomaterials. The designed nanogenerators respond to human wrist movements with the highest output voltage of 0.15 V, for the PVDF/Ce-Fe2O3 when subjected to hand movements. The overall piezoelectric power generation is correlated with the nanoparticle size and the existing filler-polymer and ion-dipole interactions.
Collapse
Affiliation(s)
| | | | - Mariam Al Ali AlMaadeed
- Materials
Science & Technology Program (MATS), College of Arts & Sciences, Qatar University, Doha 2713, Qatar
| |
Collapse
|
19
|
Rana DK, Singh SK, Kundu SK, Roy S, Angappane S, Basu S. Electrical and room temperature multiferroic properties of polyvinylidene fluoride nanocomposites doped with nickel ferrite nanoparticles. NEW J CHEM 2019. [DOI: 10.1039/c8nj04755c] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The higher values of magneto-dielectric coupling is observed in flexible multiferroic polyvinylidene fluoride (PVDF) nanocomposites doped with nickel ferrite (NFO) nanoparticles.
Collapse
Affiliation(s)
- Dhiraj Kumar Rana
- Department of Physics
- National Institute of Technology
- Durgapur-713209
- India
| | - Suresh Kumar Singh
- Department of Physics
- National Institute of Technology
- Durgapur-713209
- India
| | - Shovan Kumar Kundu
- Department of Physics
- National Institute of Technology
- Durgapur-713209
- India
| | - Subir Roy
- Centre for Nano and Soft Matter Sciences
- Jalahalli
- Bangalore-560013
- India
| | - S. Angappane
- Centre for Nano and Soft Matter Sciences
- Jalahalli
- Bangalore-560013
- India
| | - Soumen Basu
- Department of Physics
- National Institute of Technology
- Durgapur-713209
- India
| |
Collapse
|
20
|
Janakiraman S, Surendran A, Biswal R, Ghosh S, Anandhan S, Venimadhav A. Electrochemical characterization of a polar β-phase poly (vinylidene fluoride) gel electrolyte in sodium ion cell. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.12.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
21
|
Terraza CA, Martin-Trasanco R, Saldías C, González M, Leiva Á, Tundidor-Camba A. Preparation of CuONPs@PVDF/Non-Woven Polyester Composite Membrane: Structural Influence of Nanoparticle Addition. Polymers (Basel) 2018; 10:polym10080862. [PMID: 30960787 PMCID: PMC6403538 DOI: 10.3390/polym10080862] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 11/30/2022] Open
Abstract
Membrane distillation techniques have appeared as promising options for guaranteeing the availability of potable water in times of scarcity of this essential resource. For membrane preparation, polyvinylidene fluoride (PVDF) is preferred due to the easier synthesis procedures, with respect to other fluorine-based polymers. In this work, copper oxide nanoparticles (CuONPs) of different weight percent (wt %) embedded in PVDF membranes supported on non-woven polyester fabric (NWPET) were prepared by the phase inversion method, and characterized by spectroscopy (ATR-FTIR, Raman) and electron microscopy techniques (SEM). The PVDF deposited onto the NWPET was mostly composed of its polar β-phase (F(β) = 53%), which was determined from the ATR-FTIR spectrum. The F(β) value remained constant throughout the whole range of added CuONP concentrations (2–10 wt %), as was determined from the ATR-FTIR spectrum. The absence of signals corresponding to CuONPs in the ATR-FTIR spectra and the appearance of peaks at 297, 360, and 630 cm−1 in the Raman spectra of the membranes suggest that the CuONPs are preferably located in the inner PVDF membrane, but not on its surface. The membrane morphologies were characterized by SEM. From the obtained SEM micrographs, a decrease and increase in the amount of micropores and nanopores, respectively, near the surface and intercalated in the finger-like layer were observed. As a result of the CuONP addition, the nanopores in the sponge-like layer decreased in size. The values of water contact angle (WCA) measurements showed a decreasing trend, from 94° to 80°, upon the addition of CuONPs (2–10 wt %), indicating a diminishment in the hydrophobicity degree of the membranes. Apparently, the increase in the amount of nanopores near the surface decreased the membrane roughness, so it became less hydrophobic.
Collapse
Affiliation(s)
- Claudio A Terraza
- Research Laboratory for Organic Polymers (RLOP), Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
- Energy Research Center. Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| | - Rudy Martin-Trasanco
- Research Laboratory for Organic Polymers (RLOP), Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| | - Cesar Saldías
- Department of Physical Chemistry, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| | - Marjorie González
- Research Laboratory for Organic Polymers (RLOP), Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| | - Ángel Leiva
- Energy Research Center. Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
- Department of Physical Chemistry, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| | - Alain Tundidor-Camba
- Research Laboratory for Organic Polymers (RLOP), Faculty of Chemistry, Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
- Energy Research Center. Pontificia Universidad Católica de Chile, Macul 7820436, Chile.
| |
Collapse
|
22
|
Zeng FW, Zhang D, Spicer JB. Palladium nanoparticle formation processes in fluoropolymers by thermal decomposition of organometallic precursors. Phys Chem Chem Phys 2018; 20:24389-24398. [DOI: 10.1039/c8cp04997a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium nanoparticles were synthesized directly in solid fluoropolymer films by thermal decomposition of a palladium acetylacetonate precursor molecularly infused in the fluoropolymer matrix.
Collapse
Affiliation(s)
- Fan W. Zeng
- Department of Materials Science and Engineering
- Johns Hopkins University
- Baltimore
- USA
| | - Dajie Zhang
- Johns Hopkins University Applied Physics Laboratory
- Laurel
- USA
| | - James B. Spicer
- Department of Materials Science and Engineering
- Johns Hopkins University
- Baltimore
- USA
| |
Collapse
|
23
|
Smart, lightweight, flexible NiO/poly(vinylidene flouride) nanocomposites film with significantly enhanced dielectric, piezoelectric and EMI shielding properties. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1396-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
24
|
|
25
|
Kar E, Bose N, Dutta B, Mukherjee N, Mukherjee S. Poly(vinylidene fluoride)/submicron graphite platelet composite: A smart, lightweight flexible material with significantly enhanced β polymorphism, dielectric and microwave shielding properties. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
26
|
|
27
|
Huang R, Wang G, Guo S, Wang K, Fu Q. Crystallographic features of poly(vinylidene fluoride) film upon an attractive substrate of KBr. Phys Chem Chem Phys 2017; 19:27828-27838. [DOI: 10.1039/c7cp04741j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among all the polymorphs of poly(vinylidene fluoride) (PVDF), the polar γ-form possesses the highest melting point and electrical breakdown strength as well as the strongest solvent and irradiation resistance, which are beneficial for the durability of PVDF products.
Collapse
Affiliation(s)
- Rui Huang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Gang Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Shuo Guo
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Ke Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Qiang Fu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| |
Collapse
|
28
|
Kar E, Bose N, Das S, Mukherjee N, Mukherjee S. Temperature dependent dielectric properties of self-standing and flexible poly(vinylidene fluoride) films infused with Er3+doped GeO2and SiO2nanoparticles. J Appl Polym Sci 2016. [DOI: 10.1002/app.44016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Epsita Kar
- Department of Physics; Indian Institute of Engineering Science and Technology; Howrah India
| | - Navonil Bose
- Department of Physics; Indian Institute of Engineering Science and Technology; Howrah India
| | - Sukhen Das
- Department of Physics; Indian Institute of Engineering Science and Technology; Howrah India
| | - Nillohit Mukherjee
- Centre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology; Howrah India
| | - Sampad Mukherjee
- Department of Physics; Indian Institute of Engineering Science and Technology; Howrah India
| |
Collapse
|
29
|
Sui Y, Chen WT, Ma JJ, Hu RH, Liu DS. Enhanced dielectric and ferroelectric properties in PVDF composite flexible films through doping with diisopropylammonium bromide. RSC Adv 2016. [DOI: 10.1039/c5ra25371c] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High β-phase phase DIPAB/PVDF composite films obtained by doping DIPAB into PVDF matrix exhibit enhanced dielectric and ferroelectric properties.
Collapse
Affiliation(s)
- Yan Sui
- School of Chemisrty and Chemical Engineering
- Jinggangshan University
- P. R. China
- The Key Laboratory of Coordination Chemistry of Jiangxi Province
- Jinggangshan University
| | - Wen-Tong Chen
- School of Chemisrty and Chemical Engineering
- Jinggangshan University
- P. R. China
- The Key Laboratory of Coordination Chemistry of Jiangxi Province
- Jinggangshan University
| | - Jun-Jie Ma
- School of Chemisrty and Chemical Engineering
- Jinggangshan University
- P. R. China
| | - Rong-Hua Hu
- School of Chemisrty and Chemical Engineering
- Jinggangshan University
- P. R. China
| | - Dong-Sheng Liu
- School of Chemisrty and Chemical Engineering
- Jinggangshan University
- P. R. China
- The Key Laboratory of Coordination Chemistry of Jiangxi Province
- Jinggangshan University
| |
Collapse
|
30
|
Dutta B, Kar E, Bose N, Mukherjee S. Significant enhancement of the electroactive β-phase of PVDF by incorporating hydrothermally synthesized copper oxide nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra21903e] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The influence of copper oxide nanoparticles on the polymorphism of PVDF is systematically investigated. Strong interfacial interactions between the negative nanoparticle surface and positive –CH2 dipoles of PVDF enhance the electroactive β-phase.
Collapse
Affiliation(s)
- Biplab Dutta
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Epsita Kar
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Navonil Bose
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Sampad Mukherjee
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| |
Collapse
|