1
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Tsai C, Chang C, Zhao M, Sue H. Effect of long‐chain branching molar fraction on scratch behavior of polypropylene. J Appl Polym Sci 2021. [DOI: 10.1002/app.50993] [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]
Affiliation(s)
- Chia‐Ying Tsai
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M, University, College Station Houston Texas USA
| | - Chao‐Shun Chang
- Technical Department of Polypropylene Division Formosa Plastics Corporation LinYuan District Kaohsiung Taiwan
| | - Mingzhen Zhao
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M, University, College Station Houston Texas USA
| | - Hung‐Jue Sue
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M, University, College Station Houston Texas USA
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2
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Tsai CY, Chang CS, Sue HJ. Quantification of Long-Chain Branching Molar Fraction in Polypropylene. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chia-Ying Tsai
- Polymer Technology Center, Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Chao-Shun Chang
- Technical Department of Polypropylene Division, Formosa Plastics Corporation, Kaohsiung 832, Taiwan
| | - Hung-Jue Sue
- Polymer Technology Center, Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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3
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Muzata TS, L JP, Bose S. Nanoparticles influence miscibility in LCST polymer blends: from fundamental perspective to current applications. Phys Chem Chem Phys 2020; 22:20167-20188. [PMID: 32966418 DOI: 10.1039/d0cp01814g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Polymer blending is an effective method that can be used to fabricate new versatile materials with enhanced properties. The blending of two polymers can result in either a miscible or an immiscible polymer blend system. This present review provides an in-depth summary of the miscibility of LCST polymer blend systems, an area that has garnered much attention in the past few years. The initial discourse of the present review mainly focuses on process-induced changes in the miscibility of polymer blend systems, and how the preparation of polymer blends affects their final properties. This review further highlights how nanoparticles induce miscibility and describes the various methods that can be implemented to avoid nanoparticle aggregation. The concepts and different state-of-the-art experimental methods which can be used to determine miscibility in polymer blends are also highlighted. Lastly, the importance of studying miscible polymer blends is extensively explored by looking at their importance in barrier materials, EMI shielding, corrosion protection, light-emitting diodes, gas separation, and lithium battery applications. The primary goal of this review is to cover the journey from the fundamental aspects of miscible polymer blends to their applications.
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Affiliation(s)
- Tanyaradzwa S Muzata
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| | - Jagadeshvaran P L
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
| | - Suryasarathi Bose
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
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4
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Paramita VD, Kasapis S. Molecular dynamics of the diffusion of natural bioactive compounds from high-solid biopolymer matrices for the design of functional foods. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Douglas JF. Weak and Strong Gels and the Emergence of the Amorphous Solid State. Gels 2018; 4:E19. [PMID: 30674795 PMCID: PMC6318627 DOI: 10.3390/gels4010019] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/14/2018] [Accepted: 02/17/2018] [Indexed: 01/03/2023] Open
Abstract
Gels are amorphous solids whose macroscopic viscoelastic response derives from constraints in the material that serve to localize the constituent molecules or particles about their average positions in space. These constraints may either be local in nature, as in chemical cross-linking and direct physical associations, or non-local, as in case of topological "entanglement" interactions between highly extended fiber or sheet structures in the fluid. Either of these interactions, or both combined, can lead to "gelation" or "amorphous solidification". While gels are often considered to be inherently non-equilibrium materials, and correspondingly termed "soft glassy matter", this is not generally the case. For example, the formation of vulcanized rubbers by cross-linking macromolecules can be exactly described as a second order phase transition from an equilibrium fluid to an equilibrium solid state, and amorphous solidification also arises in diverse physical gels in which molecular and particle localization occurs predominantly through transient molecuar associations, or even topological interactions. As equilibrium, or near equilibrium systems, such gels can be expected to exhibit universal linear and non-linear viscoelastic properties, especially near the "critical" conditions at which the gel state first emerges. In particular, a power-law viscoelastic response is frequently observed in gel materials near their "gelation" or "amorphous solidification" transition. Another basic property of physical gels of both theoretical and practical interest is their response to large stresses at constant shear rate or under a fixed macrocopic strain. In particular, these materials are often quite sensitive to applied stresses that can cause the self-assembled structure to progressively break down under flow or deformation. This disintegration of gel structure can lead to "yield" of the gel material, i.e., a fluidization transition, followed by shear thinning of the resulting heterogeneous "jelly-like" fluid. When the stress is removed, however, the material can relax back to its former equilibrium gel state, i.e., gel rejuvenation. In constrast, a non-equilibrium material will simply change its form and properties in a way that depends on processing history. Physical gels are thus unique self-healing materials in which the existence of equilibrium ensures their eventual recovery. The existence of equilibrium also has implications for the nature of both the linear and non-linear rheological response of gel materials, and the present paper explores this phenomenon based on simple scaling arguments of the kind frequently used in describing phase transitions and the properties of polymer solutions.
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Affiliation(s)
- Jack F Douglas
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
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6
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Gainaru C, Hecksher T, Fan F, Xing K, Cetinkaya B, Olsen NB, Dyre JC, Sokolov AP, Böhmer R. Simple-liquid dynamics emerging in the mechanical shear spectra of poly(propylene glycol). Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4206-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Xie SJ, Schweizer KS. Nonuniversal Coupling of Cage Scale Hopping and Collective Elastic Distortion as the Origin of Dynamic Fragility Diversity in Glass-Forming Polymer Liquids. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02272] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shi-Jie Xie
- Departments of Materials
Science and Chemistry, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801, United States
| | - Kenneth S. Schweizer
- Departments of Materials
Science and Chemistry, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801, United States
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8
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Saha D, Joshi YM, Bandyopadhyay R. Kinetics of the glass transition of fragile soft colloidal suspensions. J Chem Phys 2015; 143:214901. [DOI: 10.1063/1.4936625] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Debasish Saha
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
| | - Yogesh M. Joshi
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Ranjini Bandyopadhyay
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
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9
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Banerjee M, Gupta A, Saha SK, Chakravorty D. 1-Aza-15-Crown-5 Functionalized Graphene Oxide for 2D Graphene-Based Li⁺-ion Conductor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3451-3457. [PMID: 25757440 DOI: 10.1002/smll.201500200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/17/2015] [Indexed: 06/04/2023]
Abstract
Attachment of Li(+) ion on graphene surface to realize Li(+)-ion conductor is a real challenge because of the weak interaction between the ions and the functional groups of graphene oxide; although, a large number of theoretical results are already available in the literature. To overcome this problem, graphene oxide is functionalized by 1-aza-15-crown-5, the cage-like structure containing four oxygens that can bind Li(+) ion through electrostatic interaction. Li(+) migration on graphene surface has been investigated using ac relaxation mechanism. Perfect Debye-type relaxation behavior with β (relaxation exponent) value ≈1 resulting from single ion is observed. The activation energy of Li(+) migration arising due to cation-π interaction is found to be 0.37 eV, which agrees well with recently reported theoretical value. It is believed that this study will help to design isolated ion conductors for Li(+)-ion battery.
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Affiliation(s)
- Moutusi Banerjee
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Abhisek Gupta
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Shyamal K Saha
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Dipankar Chakravorty
- MLS Professor's Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
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10
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Mirigian S, Schweizer KS. Dynamical Theory of Segmental Relaxation and Emergent Elasticity in Supercooled Polymer Melts. Macromolecules 2015. [DOI: 10.1021/ma5022083] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stephen Mirigian
- Departments of Materials
Science, Chemical and Biomolecular Engineering, Chemistry and Frederick
Seitz Materials Research Laboratory, University of Illinois, 1304 West
Green Street, Urbana, Illinois 61801, United States
| | - Kenneth S. Schweizer
- Departments of Materials
Science, Chemical and Biomolecular Engineering, Chemistry and Frederick
Seitz Materials Research Laboratory, University of Illinois, 1304 West
Green Street, Urbana, Illinois 61801, United States
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11
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Nie Y, Ye X, Zhou Z, Hao T, Yang W, Lu H. Structural characteristics of a cooperatively rearranging region during the glass transition of a polymer system. RSC Adv 2015. [DOI: 10.1039/c4ra16849f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Local ordered structures are formed during glass transition. These local orders preferred to move cooperatively during relaxation. In other words, the cooperatively rearranging regions contained some local order.
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Affiliation(s)
- Yijing Nie
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Xubo Ye
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Zhiping Zhou
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Tongfan Hao
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Wenming Yang
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Haifeng Lu
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
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12
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Nie Y, Ye X, Zhou Z, Yang W, Tao L. Intrinsic correlations between dynamic heterogeneity and conformational transition in polymers during glass transition. J Chem Phys 2014; 141:074901. [DOI: 10.1063/1.4892757] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Nanoconfined segmental dynamics in miscible polymer blend nanocomposites: the influence of the geometry of nanoparticles. IRANIAN POLYMER JOURNAL 2013. [DOI: 10.1007/s13726-013-0160-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Ngai KL, Capaccioli S. Unified explanation of the anomalous dynamic properties of highly asymmetric polymer blends. J Chem Phys 2013; 138:054903. [DOI: 10.1063/1.4789585] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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16
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Chu PPJ, Howard JJ. Nuclear spin relaxation times dispersion in disordered polymer systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19940860118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Angell C, Martin S. AC and DC Studies of Non-Exponential Relaxation Processes in Superionic Conductors: Correlation of Conductivity and NMR Studies. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-135-73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractThis paper considers the results of NMR relaxation studies of fast ion glasses in the light of variable frequency electrical conductivity measurements. We show that the low activation energy observed for relaxation processes studied at constant frequency below the temperature of the T1minimum is reproduced by the corresponding constant frequency conductivity measurements. Other characteristics of the constant frequency conductivity in this low activation energy regime, such as the unphysically low pre-exponent, match with the corresponding observations for NMR measurements. Since the activation energy observed at constant frequency in the frequency-dependent regime for conductivity depends on the characteristic departure from exponential relaxation for the conductivity process, we conclude that the NMR activation energy is likewise a simple consequence of the nonexponential character of ionic relaxation in the glass. In this case, the low activation energy attributed to processes probed by NMR relaxation is simply a misinterpretation since it is found, in the wide frequency range studies available to admittance bridge measurements, that all elements of the relaxation spectrum have essentially equal activation energies.
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18
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Roland CM, Bero CA, Ngai KL, Antonietti M. Segmental Relaxation in Crosslinked Rubber. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-411-367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTStudies of the local segmental relaxation in rubbery networks reveal a variety of behaviors. In experiments on networks with labeled junctions, whereby the motion of the crosslink site is specifically monitored, the segmental relaxation function broadens, accompanied by a larger activation energy, in a manner well-described by the coupling model of relaxation. The more usual experiment simply measures bulk relaxation, without discriminating among different relaxing entities. For networks, crosslinking introduces a distribution of relaxation behaviors, related to the proximity of a moiety to the junctions. The resulting inhomogeneously broadened relaxation function is difficult to analyze; nevertheless, a heightened sensitivity to temperature (larger activation energy) is exhibited, from which inferences can be made regarding the shape of the relaxation function. Finally, the segmental relaxation of highly crosslinked microgels is ostensibly homogeneous. Interestingly, however, the inverse correlation between the stretch exponent, β, and the activation energy, observed quantitatively in conventional networks, is violated by the microgels.
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Nowick AS, Vaysleyb AV, Jain H, Lu X. AC Conductivity of Crystalline Materials and Glasses Ascribed to ADWPs. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-411-99] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe behavior of the frequency dependence of the conductivity, σ(ω), of numerous crystalline materials and glasses is close to an ω1.0 dependence in the limit of low temperatures and/or high frequencies (referred to as the “nearly constant loss”, or NCL, regime). Detailed analysis of this behavior, including the frequency dependence of both ε′ and ε″, shows that it can be described phenomenologically as produced by a broad distribution of asymmetric double-well potentials (ADWPs) with low activation energies. In order to obtain an understanding of the atomic origins of such potentials, we investigate the composition dependence of this behavior in such materials as crystalline CeO2:1%Y3+ ceramics with variable [Y3+] and alkali germanate glasses with variable alkali concentration. The appearance of a discrete loss peak in CeO2: 1%Y3+ helps us understand the ADWPs as due to “off-symmetry” configurations that undergo wiggling motion between adjacent minimum-energy positions.
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Abstract
The atomic-scale dynamics of the glass-to-liquid transition are, in general, poorly understood in inorganic materials. Here, two-dimensional magic angle spinning nuclear magnetic resonance spectra collected just above the glass transition of K(2)Si(4)O(9) at temperatures as high as 583 degrees C are presented. Rates of exchange for silicon among silicate species, which involves Si-O bond breaking, have been measured and are shown to be closely related in time scale to those defined by viscosity. Thus, even at viscosities as high as 10(10) pascal seconds, local bond breaking (in contrast to the cooperative motion of large clusters) is of major importance in the control of macroscopic flow and diffusion.
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21
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Kanert O, Kloke M, Küchler R, Rückstein S, Jain H. Nuclear Spin Relaxation. Nuclear Spin Relaxation and Electrical Conductivity in Lithium Germanate Glasses. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19910950922] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Elliott SR, Owens AP. A Target Diffusion Theory for Nuclear Spin Relaxation in Ionically-Conducting Glasses. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19910950907] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Viciosa T, Pires G, Ramos JJM. Revisitation of the molecular mobility of the amorphous solid 4,4′-methylenebis(N,N-diglycidylaniline) (MBDA). J Mol Liq 2009. [DOI: 10.1016/j.molliq.2009.07.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Rinn B, Dieterich W, Maass P. Stochastic modelling of ion dynamics in complex systems: Dipolar effects. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13642819808205021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Bernd Rinn
- a Fakultät für Physik , Universität Konstanz , D-78434 , Konstanz , Germany
| | - Wolfgang Dieterich
- a Fakultät für Physik , Universität Konstanz , D-78434 , Konstanz , Germany
| | - Philipp Maass
- a Fakultät für Physik , Universität Konstanz , D-78434 , Konstanz , Germany
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25
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Sudo S, Shinyashiki N, Arima Y, Yagihara S. Broadband dielectric study on the water-concentration dependence of the primary and secondary processes for triethyleneglycol-water mixtures. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 78:011501. [PMID: 18763955 DOI: 10.1103/physreve.78.011501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Indexed: 05/26/2023]
Abstract
Broadband dielectric measurements for triethyleneglycol (3EG)-water mixtures with various concentrations were performed in the frequency range of 10 muHz-10 GHz and in the temperature range of 130-298 K . For each mixture, the separation of the primary (alpha) and secondary processes is observed below the crossover temperature, TC. In the case of 80-100 wt% 3EG-water mixtures, the Kohlrausch-Williams-Watts-type primary process above TC continues to the alpha process below TC, and an additional secondary process is observed in the frequency range higher than that of the alpha process below TC. On the other hand, the primary process for 65 and 70 wt% 3EG-water mixtures above TC continues to the higher-frequency secondary process below TC, and an additional alpha process appears at a frequency lower than that of the secondary process. The contribution of water to relaxation processes is discussed, to clarify the molecular mechanism of the separation behavior. The characteristic separation behavior of the relaxation processes for high-water-content 3EG-water mixtures is due to the existence of excess water, which cannot move cooperatively with solute 3EG molecules below TC.
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Affiliation(s)
- Seiichi Sudo
- Departiment of Physics, Musashi Institute of Technology, Tamazutsumi, Setagaya, Tokyo, Japan
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26
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Skolnick J, Kolinski A. Dynamics of Dense Polymer Systems: Computer Simulations and Analytic Theories. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141274.ch5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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27
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Lodge TP, Rotstein NA, Prager S. Dynamics of Entangled Polymer Liquids: Do Linear Chains Reptate? ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470141281.ch1] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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28
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Knödler D, Stiller O, Dieterich W. Dynamic structure factor and acoustic attenuation in disordered solid electrolytes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639508238555] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- D. Knödler
- a Fakultät für Physik , Universität Konstanz , Universitätsstr. 10, D-78434 , Konstanz , Germany
| | - O. Stiller
- b Fachbereich Physik, Universität Bayreuth , D-95447 , Bayreuth , Germany
| | - W. Dieterich
- a Fakultät für Physik , Universität Konstanz , Universitätsstr. 10, D-78434 , Konstanz , Germany
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29
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Sudo S, Tsubotani S, Shimomura M, Shinyashiki N, Yagihara S. Dielectric study of the α and β processes in supercooled ethylene glycol oligomer–water mixtures. J Chem Phys 2004; 121:7332-40. [PMID: 15473803 DOI: 10.1063/1.1796232] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Broadband dielectric measurements for 65 wt % ethylene glycol oligomer (EGO)-water mixtures with one to six repeat units of EGO molecules were performed in the frequency range of 10 microHz-10 GHz and the temperature range of 128-298 K. In the case of the water-EGO mixtures with one and two repeat units of the EGO molecule (small EGO), the shape of the dielectric loss peak of the primary process is asymmetrical about the logarithm of the frequency of maximum loss above the crossover temperature, T(C). The asymmetric process continues to the alpha process at a low frequency, and an additional beta process appears in the frequency range higher than that of the alpha process below T(C). In contrast, the water-EGO mixtures with three or more repeat units of the EGO molecule (large EGO) show a broad and symmetrical loss peak of the primary process above T(C). The symmetric process continues to the beta process, and an additional alpha process appears in the frequency range lower than that of the beta process below T(C). These different scenarios of the alpha-beta separation related to the shape of the loss peak above T(C) are a result of the difference in the cooperative motion of water and solute molecules. The solute and water molecules move cooperatively in the small EGO-water mixtures above T(C), and this cooperative motion leads to the asymmetric loss peak above T(C) and the alpha process below T(C). For the large EGO-water mixtures, the spatially restricted motion of water confined by solute molecules leads to the symmetric loss peak above T(C) and the beta process below T(C).
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Affiliation(s)
- Seiichi Sudo
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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30
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Amelioration of mechanical brittleness in hyperbranched polymer. 1. Macroscopic evaluation by dynamic viscoelastic relaxation. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Robertson CG, Wang. Nanoscale Cooperative Length of Local Segmental Motion in Polybutadiene. Macromolecules 2004. [DOI: 10.1021/ma0495792] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Wang
- Bridgestone/Firestone Research, LLC, 1200 Firestone Parkway, Akron, Ohio 44317-0001
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32
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Hori H, Urakawa O, Adachi K. Dielectric Study of Dynamical Heterogeneity in Blends of Polystyrene and Low Mass Compounds. Polym J 2003. [DOI: 10.1295/polymj.35.721] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Varnik F, Binder K. Shear viscosity of a supercooled polymer melt via nonequilibrium molecular dynamics simulations. J Chem Phys 2002. [DOI: 10.1063/1.1503770] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nikonorova N, Borisova T, Barmatov E, Pissis P, Diaz-Calleja R. Comparative dielectric and TSDC studies of molecular mobility in liquid-crystalline side-chain poly(methacrylate). POLYMER 2002. [DOI: 10.1016/s0032-3861(01)00814-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Calorimetric analysis of the structural relaxation in partially hydrated amorphous polysaccharides. I. Glass transition and fragility. Carbohydr Polym 2002. [DOI: 10.1016/s0144-8617(01)00217-x] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Huang D, Colucci DM, McKenna GB. Dynamic fragility in polymers: A comparison in isobaric and isochoric conditions. J Chem Phys 2002. [DOI: 10.1063/1.1448287] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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37
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Sudo S, Shinyashiki N, Kitsuki Y, Yagihara S. Dielectric Relaxation Time and Relaxation Time Distribution of Alcohol−Water Mixtures. J Phys Chem A 2001. [DOI: 10.1021/jp013117y] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seiichi Sudo
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Yusuke Kitsuki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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38
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Ferri D, Castellani L. Fine Structure and Thermorheological Complexity of the Softening Dispersion in Styrene-Based Copolymers. Macromolecules 2001. [DOI: 10.1021/ma000328c] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dino Ferri
- ENICHEM Research Center, Via Taliercio 14, 46100 Mantova, Italy
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39
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Secondary dielectric β-relaxation in amorphous poly(ethylene terephthalate): combined thermally stimulated and isothermal depolarization current investigations. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00732-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Shan L, Robertson CG, Verghese KNE, Burts E, Riffle JS, Ward TC, Reifsnider KL. Influence of vinyl ester/styrene network structure on thermal and mechanical behavior. J Appl Polym Sci 2001. [DOI: 10.1002/app.1171] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Neyertz S, Brown D, Colombini D, Albérola ND, Merle G. Volume Dependence of Molecular Flexibility in Poly(ethylene oxide) under Negative Pressure. Macromolecules 2000. [DOI: 10.1021/ma990927n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. Neyertz
- Laboratoire des Matériaux Polymères et Composites, LMPC (UMR-CNRS 5041), Université de Savoie, Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - D. Brown
- Laboratoire des Matériaux Polymères et Composites, LMPC (UMR-CNRS 5041), Université de Savoie, Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - D. Colombini
- Laboratoire des Matériaux Polymères et Composites, LMPC (UMR-CNRS 5041), Université de Savoie, Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - N. D. Albérola
- Laboratoire des Matériaux Polymères et Composites, LMPC (UMR-CNRS 5041), Université de Savoie, Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - G. Merle
- Laboratoire des Matériaux Polymères et Composites, LMPC (UMR-CNRS 5041), Université de Savoie, Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
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42
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Tao H, Lodge TP, von Meerwall ED. Diffusivity and Viscosity of Concentrated Hydrogenated Polybutadiene Solutions. Macromolecules 2000. [DOI: 10.1021/ma991983r] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hui Tao
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431
| | - Timothy P. Lodge
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431
| | - Ernst D. von Meerwall
- Department of Physics and Institute of Polymer Science, University of Akron, Akron, Ohio 44325-4001
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43
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Montserrat S, Cort�s P, Calventus Y, Hutchinson JM. Effect of crosslink length on the enthalpy relaxation of fully cured epoxy-diamine resins. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/(sici)1099-0488(20000201)38:3<456::aid-polb11>3.0.co;2-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Schroeder MJ, Roland CM, Kwei TK. Segmental Relaxation of Poly(styrene-co-vinylphenol). Macromolecules 1999. [DOI: 10.1021/ma990317n] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. J. Schroeder
- Department of Chemistry, United States Naval Academy, Annapolis, Maryland 21402
| | - C. M. Roland
- Chemistry Division, Code 6120, Naval Research Laboratory, Washington, D.C. 20375-5342
| | - T. K. Kwei
- Department of Chemical Engineering, Chemistry and Material Science, Polytechnic University, Six Metrotech Center, Brooklyn, New York 11201
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45
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Fitz BD, Mijovic J. Segmental Dynamics and Density Fluctuations in Polymer Networks during Chemical Vitrification. Macromolecules 1999. [DOI: 10.1021/ma981435y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin D. Fitz
- Department of Chemical Engineering and Chemistry, Polytechnic University, Brooklyn, New York 11201
| | - Jovan Mijovic
- Department of Chemical Engineering and Chemistry, Polytechnic University, Brooklyn, New York 11201
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46
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Shinyashiki N, Yagihara S. Comparison of Dielectric Relaxations of Water Mixtures of Poly(vinylpyrrolidone) and 1-Vinyl-2-pyrrolidinone. J Phys Chem B 1999. [DOI: 10.1021/jp983800t] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Shinyashiki
- Department of Physics, School of Science, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, School of Science, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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47
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Fitz BD, Mijovic J. Segmental Dynamics in Poly(methylphenylsiloxane) Networks by Dielectric Relaxation Spectroscopy. Macromolecules 1999. [DOI: 10.1021/ma981937b] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin D. Fitz
- Department of Chemical Engineering and Chemistry, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
| | - Jovan Mijovic
- Department of Chemical Engineering and Chemistry, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201
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49
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Adachi K, Hirano H, Freire JJ. Dielectric study of dynamics of subchains and distribution of normal mode relaxation times in dilute and semidilute solutions of miscible block copolymers. POLYMER 1999. [DOI: 10.1016/s0032-3861(98)00450-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Streletzky KA, Phillies GDJ. Coupling Analysis of Probe Diffusion in High Molecular Weight Hydroxypropylcellulose. J Phys Chem B 1999. [DOI: 10.1021/jp982804v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kiril A. Streletzky
- Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - George D. J. Phillies
- Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
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