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Qi W, Li L, Han R, Hou Y, Zhou Z, Chen GX, Li Q. Enhancing Dielectric Properties of (CaCu 3Ti 4O 12 NWs-Graphene)/PVDF Ternary Oriented Composites by Hot Stretching. ACS OMEGA 2024; 9:13298-13305. [PMID: 38524490 PMCID: PMC10956412 DOI: 10.1021/acsomega.3c10111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 03/26/2024]
Abstract
Using high-dielectric inorganic ceramics as fillers can effectively increase the dielectric constant of polymer-based composites. However, a high percentage of fillers will inevitably lead to a decrease in the mechanical toughness of the composite materials. By introducing high aspect ratio copper calcium titanate (CaCu3Ti4O12) nanowires (CCTO NWs) and graphene as fillers, the ternary poly(vinylidene fluoride) (PVDF)-based composites (CCTO NWs-graphene)/PVDF with a significant one-dimensional orientation structure were prepared by hot stretching. CCTO NWs and graphene are arranged in a directional manner to form a large number of microcapacitor structures, which significantly improves the dielectric constant of the composites. When the ratio of CCTO NWs and graphene is 0.2 and 0.02, the oriented composites have the highest dielectric constant, which is 19.3% higher than the random composites, respectively. Numerical simulations reveal that the introduction of graphene and the construction of the one-dimensional oriented microstructure have a positive effect on improving the dielectric properties of the composites. This study provides a strategy to improve the dielectric properties of composite materials by structural design without changing the filler content, which has broad application prospects in the field of electronic devices.
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Affiliation(s)
- Wenning Qi
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Liuyang Li
- Key
Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Ruolin Han
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Yanbin Hou
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Zheng Zhou
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Guang-Xin Chen
- College
of Material Science and Engineering, Beijing
University of Chemical Technology, Beijing 100029, PR China
| | - Qifang Li
- Key
Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
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2
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Torres-Rodriguez J, E. Bedolla D, D’Amico F, Koopmann AK, Vaccari L, Saccomano G, Kohns R, Huesing N. Polyvinylidene Fluoride Aerogels with Tailorable Crystalline Phase Composition. Gels 2022; 8:gels8110727. [PMID: 36354635 PMCID: PMC9689208 DOI: 10.3390/gels8110727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
In this work, polyvinylidene fluoride (PVDF) aerogels with a tailorable phase composition were prepared by following the crystallization-induced gelation principle. A series of PVDF wet gels (5 to 12 wt.%) were prepared from either PVDF−DMF solutions or a mixture of DMF and ethanol as non-solvent. The effects of the non-solvent concentration on the crystalline composition of the PVDF aerogels were thoroughly investigated. It was found that the nucleating role of ethanol can be adjusted to produce low-density PVDF aerogels, whereas the changes in composition by the addition of small amounts of water to the solution promote the stabilization of the valuable β and γ phases. These phases of the aerogels were monitored by FTIR and Raman spectroscopies. Furthermore, the crystallization process was followed by in-time and in situ ATR−FTIR spectroscopy. The obtained aerogels displayed specific surface areas > 150 m2 g−1, with variable particle morphologies that are dependent on the non-solvent composition, as observed by using SEM and Synchrotron Radiation Computed micro-Tomography (SR-μCT).
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Affiliation(s)
- Jorge Torres-Rodriguez
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Diana E. Bedolla
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Area Science Park, Padriciano 99, 34149 Trieste, Italy
| | | | - Ann-Kathrin Koopmann
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Lisa Vaccari
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
| | - Giulia Saccomano
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/1, 34127 Trieste, Italy
| | - Richard Kohns
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Nicola Huesing
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Correspondence:
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3
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Kianfar P, Bongiovanni R, Ameduri B, Vitale A. Electrospinning of Fluorinated Polymers: Current State of the Art on Processes and Applications. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2067868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Parnian Kianfar
- Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy
| | - Roberta Bongiovanni
- Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy
| | - Bruno Ameduri
- ICGM, Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Alessandra Vitale
- Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy
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4
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Goes MAD, Santos JPF, Carvalho BDM. Impact of controlled extensional flow during extrusion of PP, PVDF and LDPE. POLIMEROS 2022. [DOI: 10.1590/0104-1428.20210085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Choi S, Moon SH, Kim TK, Kim HS. Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method. POLYM INT 2019. [DOI: 10.1002/pi.5902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sejin Choi
- Department of Organic Material Science and EngineeringPusan National University Busan Republic of Korea
| | - Sung Hyeok Moon
- Department of Organic Material Science and EngineeringPusan National University Busan Republic of Korea
| | - Tae Kyun Kim
- Department of Organic Material Science and EngineeringPusan National University Busan Republic of Korea
| | - Han Seong Kim
- Department of Organic Material Science and EngineeringPusan National University Busan Republic of Korea
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6
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Impact of PVDF/PEO blend composition on the β-phase crystallization and dielectric properties of silica nanoparticles incorporated polymer nanocomposites. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1859-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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7
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Papkov D, Delpouve N, Delbreilh L, Araujo S, Stockdale T, Mamedov S, Maleckis K, Zou Y, Andalib MN, Dargent E, Dravid VP, Holt MV, Pellerin C, Dzenis YA. Quantifying Polymer Chain Orientation in Strong and Tough Nanofibers with Low Crystallinity: Toward Next Generation Nanostructured Superfibers. ACS NANO 2019; 13:4893-4927. [PMID: 31038925 DOI: 10.1021/acsnano.8b08725] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Advanced fibers revolutionized structural materials in the second half of the 20th century. However, all high-strength fibers developed to date are brittle. Recently, pioneering simultaneous ultrahigh strength and toughness were discovered in fine (<250 nm) individual electrospun polymer nanofibers (NFs). This highly desirable combination of properties was attributed to high macromolecular chain alignment coupled with low crystallinity. Quantitative analysis of the degree of preferred chain orientation will be crucial for control of NF mechanical properties. However, quantification of supramolecular nanoarchitecture in NFs with low crystallinity in the ultrafine diameter range is highly challenging. Here, we discuss the applicability of traditional as well as emerging methods for quantification of polymer chain orientation in nanoscale one-dimensional samples. Advantages and limitations of different techniques are critically evaluated on experimental examples. It is shown that straightforward application of some of the techniques to sub-wavelength-diameter NFs can lead to severe quantitative and even qualitative artifacts. Sources of such size-related artifacts, stemming from instrumental, materials, and geometric phenomena at the nanoscale, are analyzed on the example of polarized Raman method but are relevant to other spectroscopic techniques. A proposed modified, artifact-free method is demonstrated. Outstanding issues and their proposed solutions are discussed. The results provide guidance for accurate nanofiber characterization to improve fundamental understanding and accelerate development of nanofibers and related nanostructured materials produced by electrospinning or other methods. We expect that the discussion in this review will also be useful to studies of many biological systems that exhibit nanofilamentary architectures and combinations of high strength and toughness.
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Affiliation(s)
- Dimitry Papkov
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
- Nebraska Center for Materials and Nanoscience , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0298 , United States
| | - Nicolas Delpouve
- Département Systèmes Désordonnés et Polymères, Equipe Internationale de Recherche et de Caractérisation des Amorphes et des Polymères , Normandie Univ, UNIROUEN, INSA ROUEN, CNRS, GPM , 76000 Rouen , France
| | - Laurent Delbreilh
- Département Systèmes Désordonnés et Polymères, Equipe Internationale de Recherche et de Caractérisation des Amorphes et des Polymères , Normandie Univ, UNIROUEN, INSA ROUEN, CNRS, GPM , 76000 Rouen , France
| | - Steven Araujo
- Département Systèmes Désordonnés et Polymères, Equipe Internationale de Recherche et de Caractérisation des Amorphes et des Polymères , Normandie Univ, UNIROUEN, INSA ROUEN, CNRS, GPM , 76000 Rouen , France
| | - Taylor Stockdale
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
| | - Sergey Mamedov
- Division of HORIBA Instruments, Inc. , HORIBA Scientific , 20 Knightsbridge Road , Piscataway , New Jersey 08854 , United States
| | - Kaspars Maleckis
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
| | - Yan Zou
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
| | - Mohammad Nahid Andalib
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
| | - Eric Dargent
- Département Systèmes Désordonnés et Polymères, Equipe Internationale de Recherche et de Caractérisation des Amorphes et des Polymères , Normandie Univ, UNIROUEN, INSA ROUEN, CNRS, GPM , 76000 Rouen , France
| | - Vinayak P Dravid
- Department of Materials Science and Engineering , Northwestern University , Evanston , Illinois 60208 , United States
| | - Martin V Holt
- Center for Nanoscale Materials , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Christian Pellerin
- Département de chimie , Université de Montréal , Montréal , QC H3C 3J7 , Canada
| | - Yuris A Dzenis
- Department of Mechanical and Materials Engineering , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0526 , United States
- Nebraska Center for Materials and Nanoscience , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0298 , United States
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8
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Santos JPF, de Melo Carvalho B, Suman Bretas RE. Remarkable change in the broadband electrical behavior of poly(vinylidene fluoride)-multiwalled carbon nanotube nanocomposites with the use of different processing routes. J Appl Polym Sci 2018. [DOI: 10.1002/app.47409] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- João Paulo Ferreira Santos
- Department of Materials Engineering; Federal University of São Carlos; Rodovia Washington Luís, Km 235, P.O. Box 676, São Carlos, São Paulo 13565-905 Brazil
| | - Benjamim de Melo Carvalho
- Department of Materials Engineering; State University of Ponta Grossa; Avenia General Carlos Cavalcanti 4748, Ponta Grossa, Paraná 84030-900 Brazil
| | - Rosario Elida Suman Bretas
- Department of Materials Engineering; Federal University of São Carlos; Rodovia Washington Luís, Km 235, P.O. Box 676, São Carlos, São Paulo 13565-905 Brazil
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9
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Electrospun Nanomaterials Implementing Antibacterial Inorganic Nanophases. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8091643] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Electrospinning is a versatile, simple, and low cost process for the controlled production of fibers. In recent years, its application to the development of multifunctional materials has encountered increasing success. In this paper, we briefly overview the general aspects of electrospinning and then we focus on the implementation of inorganic nanoantimicrobials, e.g., nanosized antimicrobial agents in electrospun fibers. The most relevant characteristics sought in nanoantimicrobials supported on (or dispersed into) polymeric materials are concisely discussed as well. The interesting literature issued in the last decade in the field of antimicrobial electrospun nanomaterials is critically described. A classification of the most relevant studies as a function of the different approaches chosen for incorporating nanoantimicrobials in the final material is also provided.
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