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Influence of Alternating Multi-Layered Design on Damping Characteristics of Butyl Rubber Composites and a New Idea for Achieving Wide Temperature Range and High Damping Performance. Polymers (Basel) 2022; 14:polym14245484. [PMID: 36559851 PMCID: PMC9783545 DOI: 10.3390/polym14245484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
This paper investigates the influence of an alternating multi-layered design on the material loss factor and effective temperature range of free/constrained-damping butyl rubber, and then proposes a new method of designing materials with high damping properties and a wide temperature range. First, the wide-temperature rubber IIR-0, the low-temperature rubber IIR-1, the medium-temperature rubber IIR-2, and the high-temperature rubber IIR-3 are prepared and characterized. Second, the influences of an alternating multi-layered design on the damping peak values and temperature range of free damping and micro-constrained damping of the rubber types are investigated. Finally, different methods for broadening the damping temperature range and improving the damping loss factor are discussed. The results show that the loss factor of the alternating multi-layered, constrained damping structure is increased to 0.488, while that of the free-damping structure is increased to 0.845. Their damping-temperature ranges are increased to 89.4 °C and 93.2 °C, respectively. A wide temperature range and high damping performance can be achieved by the alternating multi-layered design of rubber/plastic micro-constrained damping composites.
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2
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Aliotta L, Gazzano M, Lazzeri A, Righetti MC. Constrained Amorphous Interphase in Poly(l-lactic acid): Estimation of the Tensile Elastic Modulus. ACS OMEGA 2020; 5:20890-20902. [PMID: 32875224 PMCID: PMC7450648 DOI: 10.1021/acsomega.0c02330] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
The mechanical properties of semicrystalline PLLA containing exclusively α'- or α-crystals have been investigated. The connection between experimental elastic moduli and phase composition has been analyzed as a function of the polymorphic crystalline form. For a complete interpretation of the mechanical properties, the contribution of the crystalline regions and the constrained amorphous interphase or rigid amorphous fraction (RAF) has been quantified by a three-phase mechanical model. The mathematical approach allowed the simultaneous quantification of the elastic moduli of (i) the α'- and α-phases (11.2 and 14.8 GPa, respectively, in excellent agreement with experimental and theoretical data reported in the literature) and (ii) the rigid amorphous fractions linked to the α'- and α-forms (5.4 and 6.1 GPa, respectively). In parallel, the densities of the RAF connected with α'- and α-crystals have been measured (1.17 and 1.11 g/cm3, respectively). The slightly higher value of the elastic modulus of the RAF connected to the α-crystals and its lower density have been associated to a stronger chain coupling at the amorphous/crystal interface. Thus, the elastic moduli at T room of the crystalline (E C), mobile amorphous (E MAF), and rigid amorphous (E RAF) fractions of PLLA turned out to be quantitatively in the order of E MAF < E RAF < E C, with the experimental E MAF value equal to 3.6 GPa. These findings can allow a better tailoring of the properties of PLLA materials in relation to specific applications.
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Affiliation(s)
- Laura Aliotta
- Department
of Civil and Industrial Engineering, University
of Pisa, Largo L. Lazzarino 1, Pisa 56122, Italy
| | - Massimo Gazzano
- CNR-ISOF,
National Research Council−Institute of Organic Synthesis and
Photoreactivity, Via P. Gobetti 101, Bologna 40129, Italy
| | - Andrea Lazzeri
- Department
of Civil and Industrial Engineering, University
of Pisa, Largo L. Lazzarino 1, Pisa 56122, Italy
- CNR-IPCF,
National Research Council−Institute for Chemical and Physical
Processes, Via G. Moruzzi
1, Pisa 56124, Italy
| | - Maria Cristina Righetti
- CNR-IPCF,
National Research Council−Institute for Chemical and Physical
Processes, Via G. Moruzzi
1, Pisa 56124, Italy
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3
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Lu H, Wang X, Hossain M, Fu YQ. A Methodology of Hydrodynamic Complexity in Topologically Hyper‐Branched Polymers Undergoing Hierarchical Multiple Relaxations. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haibao Lu
- Science and Technology on Advanced Composites in Special Environments LaboratoryHarbin Institute of Technology Harbin 150080 China
| | - Xiaodong Wang
- Science and Technology on Advanced Composites in Special Environments LaboratoryHarbin Institute of Technology Harbin 150080 China
| | - Mokarram Hossain
- Zienkiewicz Centre for Computational EngineeringCollege of EngineeringSwansea University Swansea SA1 8EN UK
| | - Yong Qing Fu
- Faculty of Engineering and EnvironmentUniversity of Northumbria Newcastle upon Tyne NE1 8ST UK
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4
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5
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Li Z, Sun R, Rahman MA, Feng J, Olah A, Baer E. Scaling effects on the optical properties of patterned nano-layered shape memory films. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Agbolaghi S, Abbaspoor S, Abbasi F. A comprehensive review on polymer single crystals—From fundamental concepts to applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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7
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Ma C, Dai K, Hou H, Ji X, Chen L, Ivey DG, Wei W. High Ion-Conducting Solid-State Composite Electrolytes with Carbon Quantum Dot Nanofillers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700996. [PMID: 29876221 PMCID: PMC5980199 DOI: 10.1002/advs.201700996] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/18/2018] [Indexed: 05/18/2023]
Abstract
Solid-state polymer electrolytes (SPEs) with high ionic conductivity are desirable for next generation lithium- and sodium-ion batteries with enhanced safety and energy density. Nanoscale fillers such as alumina, silica, and titania nanoparticles are known to improve the ionic conduction of SPEs and the conductivity enhancement is more favorable for nanofillers with a smaller size. However, aggregation of nanoscale fillers in SPEs limits particle size reduction and, in turn, hinders ionic conductivity improvement. Here, a novel poly(ethylene oxide) (PEO)-based nanocomposite polymer electrolyte (NPE) is exploited with carbon quantum dots (CQDs) that are enriched with oxygen-containing functional groups. Well-dispersed, 2.0-3.0 nm diameter CQDs offer numerous Lewis acid sites that effectively increase the dissociation degree of lithium and sodium salts, adsorption of anions, and the amorphicity of the PEO matrix. Thus, the PEO/CQDs-Li electrolyte exhibits an exceptionally high ionic conductivity of 1.39 × 10-4 S cm-1 and a high lithium transference number of 0.48. In addition, the PEO/CQDs-Na electrolyte has ionic conductivity and sodium ion transference number values of 7.17 × 10-5 S cm-1 and 0.42, respectively. It is further showed that all solid-state lithium/sodium rechargeable batteries assembled with PEO/CQDs NPEs display excellent rate performance and cycling stability.
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Affiliation(s)
- Cheng Ma
- State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaHunan410083P. R. China
| | - Kuan Dai
- State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaHunan410083P. R. China
| | - Hongshuai Hou
- State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaHunan410083P. R. China
- College of Chemistry and Chemical EngineeringCentral South UniversityChangshaHunan410083P. R. China
| | - Xiaobo Ji
- College of Chemistry and Chemical EngineeringCentral South UniversityChangshaHunan410083P. R. China
| | - Libao Chen
- State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaHunan410083P. R. China
| | - Douglas G. Ivey
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
| | - Weifeng Wei
- State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaHunan410083P. R. China
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Tamaño‐Machiavello MN, Costa CM, Romero‐Colomer FJ, María Meseguer Dueñas J, Lanceros‐Mendez S, Luis Gómez Ribelles J. Crystallization kinetics of poly(ethylene oxide) confined in semicrystalline poly(vinylidene) fluoride. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24564] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria Noel Tamaño‐Machiavello
- Centre for Biomaterials and Tissue Engineering (CBIT)Universitat Politècnica de València, Camino de Vera s/n46022 Valencia Spain
| | | | - Francisco José Romero‐Colomer
- Centre for Biomaterials and Tissue Engineering (CBIT)Universitat Politècnica de València, Camino de Vera s/n46022 Valencia Spain
| | - José María Meseguer Dueñas
- Centre for Biomaterials and Tissue Engineering (CBIT)Universitat Politècnica de València, Camino de Vera s/n46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER‐BBN)Valencia Spain
| | - Senentxu Lanceros‐Mendez
- BCMaterials, Parque Científico y Tecnológico de BizkaiaDerio48160 Spain
- IKERBASQUE, Basque Foundation for ScienceBilbao48013 Spain
| | - José Luis Gómez Ribelles
- Centre for Biomaterials and Tissue Engineering (CBIT)Universitat Politècnica de València, Camino de Vera s/n46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER‐BBN)Valencia Spain
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9
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Thiam A, Antonelli C, Iojoiu C, Alloin F, Sanchez JY. Optimizing ionic conduction of poly(oxyethylene) electrolytes through controlling the cross-link density. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.04.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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DeFelice J, Milner ST, Lipson JEG. Simulating Local Tg Reporting Layers in Glassy Thin Films. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00090] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jeffrey DeFelice
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Scott T. Milner
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jane E. G. Lipson
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
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11
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Zheng Y, Dong R, Shen J, Guo S. Tunable Shape Memory Performances via Multilayer Assembly of Thermoplastic Polyurethane and Polycaprolactone. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1371-1380. [PMID: 26713358 DOI: 10.1021/acsami.5b10246] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Shape memory materials containing alternating layers of thermoplastic polyurethane (TPU) and polycaprolactone (PCL) were fabricated through layer-multiplying extrusion. As a type of special co-continuous morphology, the multilayer structure had stable and well-defined continuous layer spaces and could be controlled by changing the number of layers. Compared with conventional polymer blends, the multilayer-assembled system with the same compositions had higher shape-fixing and -recovery ratios that could be further improved by increasing the number of layers. By analyzing from a viscoelastic model, the deformation energy preserved in elastic TPU layers would be balanced by adjacent PCL layers through interfacial shearing effect so that each component in the multilayer structure was capable of endowing the maximum contribution to both of the shape-fixing and -recovery stages. Besides, the influence of the hardness of TPU layers and the morphology of PCL layers were respectively concerned as well. Results revealed that choosing low-hardness TPU or replacing neat PCL layers by TPU/PCL blend with co-continuous morphology were beneficial to achieving outstanding shape memory performances.
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Affiliation(s)
- Yu Zheng
- Polymer Research Institute of Sichuan University , State Key Laboratory of Polymer Materials Engineering, Chengdu, Sichuan 610065, PR China
| | - Renqiong Dong
- Polymer Research Institute of Sichuan University , State Key Laboratory of Polymer Materials Engineering, Chengdu, Sichuan 610065, PR China
| | - Jiabin Shen
- Polymer Research Institute of Sichuan University , State Key Laboratory of Polymer Materials Engineering, Chengdu, Sichuan 610065, PR China
| | - Shaoyun Guo
- Polymer Research Institute of Sichuan University , State Key Laboratory of Polymer Materials Engineering, Chengdu, Sichuan 610065, PR China
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12
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Nakagawa S, Ishizone T, Nojima S, Kamimura K, Yamaguchi K, Nakahama S. Effects of Chain-Ends Tethering on the Crystallization Behavior of Poly(ε-caprolactone) Confined in Lamellar Nanodomains. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01744] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Shintaro Nakagawa
- Department
of Organic and Polymeric Materials, Graduate School of Science and
Engineering, Tokyo Institute of Technology, 2-12-1-H-125 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Takashi Ishizone
- Department
of Organic and Polymeric Materials, Graduate School of Science and
Engineering, Tokyo Institute of Technology, 2-12-1-H-125 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shuichi Nojima
- Department
of Organic and Polymeric Materials, Graduate School of Science and
Engineering, Tokyo Institute of Technology, 2-12-1-H-125 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kohei Kamimura
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2941 Tsuchiya, Hiratsuka-shi, Kanagawa 259-1293, Japan
| | - Kazuo Yamaguchi
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2941 Tsuchiya, Hiratsuka-shi, Kanagawa 259-1293, Japan
- Research
Institute for Photofunctionalized Materials, Kanagawa University, 2941 Tsuchiya, Hiratsuka-shi, Kanagawa 259-1293, Japan
| | - Seiichi Nakahama
- Research
Institute for Photofunctionalized Materials, Kanagawa University, 2941 Tsuchiya, Hiratsuka-shi, Kanagawa 259-1293, Japan
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13
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Serral M, Mangnus M, Sandkühler P, Bonet Avalos J. Viscoelastic response of multilayer polymeric films of linear low-density polyethylene and ethylene vinyl alcohol copolymer. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maria Serral
- Departament d'Enginyeria Química; Universitat Rovira i Virgili; Av. dels Països Catalans, 26 Tarragona 43007 Spain
| | - Marc Mangnus
- Dow Benelux B.V., Plastics R&D; 4530 AA Terneuzen The Netherlands
| | - Peter Sandkühler
- Dow Europe GmbH, Packaging & Specialty Plastics; Horgen 8810 Switzerland
| | - Josep Bonet Avalos
- Departament d'Enginyeria Química; Universitat Rovira i Virgili; Av. dels Països Catalans, 26 Tarragona 43007 Spain
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14
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Chrissopoulou K, Anastasiadis SH. Effects of nanoscopic-confinement on polymer dynamics. SOFT MATTER 2015; 11:3746-3766. [PMID: 25869864 DOI: 10.1039/c5sm00554j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The static and dynamic behavior of polymers in confinement close to interfaces can be very different from that in the bulk. Among the various geometries, intercalated nanocomposites, in which polymer films of ∼1 nm thickness reside between the parallel inorganic surfaces of layered silicates in a well-ordered multilayer, offer a unique avenue for the investigation of the effects of nanoconfinement on polymer structure and dynamics by utilizing conventional analytical techniques and macroscopic specimens. In this article, we provide a review of research activities mainly in our laboratory on polymer dynamics under severe confinement utilizing different polymer systems: polar and non-polar polymers were mixed with hydrophilic or organophilic silicates, respectively, whereas hyperbranched polymers were studied in an attempt to probe the effect of polymer-surface interactions by altering the number and the kinds of functional groups in the periphery of the branched polymers. The polymer dynamics was probed by quasielastic neutron scattering and dielectric relaxation spectroscopy and was compared with that of the polymers in the bulk. In all cases, very local sub-Tg processes related to the motion of side and/or end groups as well as the segmental α-relaxation were identified with distinct differences recorded between the bulk and the confined systems. Confinement was found not to affect the very local motion in the case of the linear chains whereas it made it easier for hyperbranched polymers due to modifications of the hydrogen bond network. The segmental relaxation in confinement becomes faster than that in the bulk, exhibits Arrhenius temperature dependence and is observed even below the bulk Tg due to reduced cooperativity in the confined systems.
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Affiliation(s)
- Kiriaki Chrissopoulou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P. O. Box 1527, 711 10 Heraklion Crete, Greece.
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15
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Jordan AM, Lenart WR, Carr JM, Baer E, Korley LTJ. Structural evolution during mechanical deformation in high-barrier PVDF-TFE/PET multilayer films using in situ X-ray techniques. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3987-3994. [PMID: 24593226 DOI: 10.1021/am4053893] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Poly(vinylidene fluoride-co-tetrafluoroethylene) (PVDF-TFE) is confined between alternating layers of poly(ethylene terephthalate) (PET) utilizing a unique multilayer processing technology, in which PVDF-TFE and PET are melt-processed in a continuous fashion. Postprocessing techniques including biaxial orientation and melt recrystallization were used to tune the crystal orientation of the PVDF-TFE layers, as well as achieve crystallinity in the PET layers through strain-induced crystallization and thermal annealing during the melt recrystallization step. A volume additive model was used to extract the effect of crystal orientation within the PVDF-TFE layers and revealed a significant enhancement in the modulus from 730 MPa in the as-extruded state (isotropic) to 840 MPa in the biaxially oriented state (on-edge) to 2230 MPa in the melt-recrystallized state (in-plane). Subsequently, in situ wide-angle X-ray scattering was used to observe the crystal structure evolution during uniaxial deformation in both the as-extruded and melt-recrystallized states. It is observed that the low-temperature ferroelectric PVDF-TFE crystal phase in the as-extruded state exhibits equatorial sharpening of the 110 and 200 crystal peaks during deformation, quantified using the Hermans orientation function, while in the melt-recrystallized state, an overall increase in the crystallinity occurs during deformation. Thus, we correlated the mechanical response (strain hardening) of the films to these respective evolved crystal structures and highlighted the ability to tailor mechanical response. With a better understanding of the structural evolution during deformation, it is possible to more fully characterize the structural response to handling during use of the high-barrier PVDF-TFE/PET multilayer films as commercial dielectrics and packaging materials.
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Affiliation(s)
- Alex M Jordan
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University , Cleveland, Ohio 44106-7202, United States
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Yao Z, Hong-fei L, Li-jia A, Shi-chun J. PROGRESS IN STUDIES ON STRUCTURE AND RELAXATION BEHAVIOR OF THE AMORPHOUS PHASES IN CRYSTALLINE POLYMERS. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.12362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Carr JM, Mackey M, Flandin L, Schuele D, Zhu L, Baer E. Effect of biaxial orientation on dielectric and breakdown properties of poly(ethylene terephthalate)/poly(vinylidene fluoride-co
-tetrafluoroethylene) multilayer films. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23277] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joel M. Carr
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland Ohio 44106-7202
| | - Matthew Mackey
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland Ohio 44106-7202
| | - Lionel Flandin
- LEPMI, UMR 5279, CNRS, Grenoble INP, Université de Savoie; Université J. Fourier, LMOPS, Bât. IUT, Campus de Savoie Technolac; F-73376 Le Bourget du Lac Cédex France
| | - Donald Schuele
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland Ohio 44106-7202
| | - Lei Zhu
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland Ohio 44106-7202
| | - Eric Baer
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland Ohio 44106-7202
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18
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Structure and transport properties of polyethylene terephthalate and poly(vinylidene fluoride-co-tetrafluoroethylene) multilayer films. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Mejía A, García N, Guzmán J, Tiemblo P. Confinement and nucleation effects in poly(ethylene oxide) melt-compounded with neat and coated sepiolite nanofibers: Modulation of the structure and semicrystalline morphology. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2012.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Chakrabarty S, Nisenholt M, Wynne KJ. PDMS–Fluorous Polyoxetane–PDMS Triblock Hybrid Elastomers: Tough and Transparent with Novel Bulk Morphologies. Macromolecules 2012. [DOI: 10.1021/ma301447f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Souvik Chakrabarty
- Department of Chemical and Life
Science Engineering, School
of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, Virginia 23284-3028, United States
| | - Mark Nisenholt
- Department of Visual Arts, Lakehead University, 955 Oliver Rd., ThunderBay, Ontario,
Canada P7B 5E1
| | - Kenneth J. Wynne
- Department of Chemical and Life
Science Engineering, School
of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, Virginia 23284-3028, United States
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21
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Liu G, Zheng L, Zhang X, Li C, Jiang S, Wang D. Reversible Lamellar Thickening Induced by Crystal Transition in Poly(butylene succinate). Macromolecules 2012. [DOI: 10.1021/ma300530a] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guoming Liu
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Engineering Plastics,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Liuchun Zheng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Engineering Plastics,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiuqin Zhang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Department of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Chuncheng Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Engineering Plastics,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shichun Jiang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Dujin Wang
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Engineering Plastics,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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22
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Lai CY, Hiltner A, Baer E, Korley LTJ. Deformation of confined poly(ethylene oxide) in multilayer films. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2218-2227. [PMID: 22506675 DOI: 10.1021/am300240r] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effect of confinement on the deformation behavior of poly(ethylene oxide) (PEO) was studied using melt processed coextruded poly(ethylene-co-acrylic acid) (EAA) and PEO multilayer films with varying PEO layer thicknesses from 3600 to 25 nm. The deformation mechanism was found to shift as layer thickness was decreased between 510 and 125 nm, from typical axial alignment of the crystalline fraction, as seen in bulk materials, to nonuniform micronecking mechanisms found in solution-grown single crystals. This change was evaluated via tensile testing, wide-angle X-ray diffraction (WAXD), atomic force microscopy (AFM), and differential scanning calorimetry (DSC). With the commercially relevant method of melt coextrusion, we were able to overcome the limitations to the testing of solution-grown single crystals, and the artifacts that occur from their handling, and bridged the gap in knowledge between thick bulk materials and thin single crystals.
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Affiliation(s)
- Chuan-Yar Lai
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
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23
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Wu C. Cooperative behavior of poly(vinyl alcohol) and water as revealed by molecular dynamics simulations. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.07.019] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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