351
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Jouault N, Zhao D, Kumar SK. Role of Casting Solvent on Nanoparticle Dispersion in Polymer Nanocomposites. Macromolecules 2014. [DOI: 10.1021/ma500619g] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Nicolas Jouault
- Department of Chemical Engineering, Columbia University, 500 W. 120th St., New York, New York 10027, United States
| | - Dan Zhao
- Department of Chemical Engineering, Columbia University, 500 W. 120th St., New York, New York 10027, United States
| | - Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, 500 W. 120th St., New York, New York 10027, United States
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352
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Samet M, Boiteux G, Seytre G, Kallel A, Serghei A. Interfacial polarization in composite materials with spherical fillers: characteristic frequencies and scaling laws. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3300-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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353
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Jouault N, Lee D, Zhao D, Kumar SK. Block-copolymer-mediated nanoparticle dispersion and assembly in polymer nanocomposites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4031-4036. [PMID: 24711123 DOI: 10.1002/adma.201305641] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 02/21/2014] [Indexed: 06/03/2023]
Abstract
A individual nanoparticle (NP) dispersion in polymer nanocomposites has been obtained through the adsorption of PSbP2VP block copolymer (BCP) at the NPs' surface in solution. The adsorbed block increases the minimum inter-NP distance, while the non-adsorbed block has favourable entropy of mixing with the matrix polymer with the same chemical structure. Physical adsorption of BCP provides a simple, robust means of organizing NPs in a chemically unfavourable polymer.
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Affiliation(s)
- Nicolas Jouault
- Department of Chemical Engineering, Columbia University, 500 W. 120th St, New York, NY, 10027, USA
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354
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Zhao J, Green PF. Spatial Organization of Nanoparticles in Thin Film Block Copolymer/Homopolymer Hosts. Macromolecules 2014. [DOI: 10.1021/ma5007045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Junnan Zhao
- Department of Materials Science and Engineering, ‡Chemical Engineering, and §Biointerfaces
Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Peter F. Green
- Department of Materials Science and Engineering, ‡Chemical Engineering, and §Biointerfaces
Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
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355
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Stephanou PS, Mavrantzas VG, Georgiou GC. Continuum Model for the Phase Behavior, Microstructure, and Rheology of Unentangled Polymer Nanocomposite Melts. Macromolecules 2014. [DOI: 10.1021/ma500415w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Pavlos S. Stephanou
- Department
of Mathematics and Statistics, University of Cyprus, PO Box 20537, 1678 Nicosia, Cyprus
| | - Vlasis G. Mavrantzas
- Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, Patras, GR 26504, Greece
- Department
of Materials, Polymer Physics, ETH Zürich, HCI H 543, CH-8093 Zürich, Switzerland
| | - Georgios C. Georgiou
- Department
of Mathematics and Statistics, University of Cyprus, PO Box 20537, 1678 Nicosia, Cyprus
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356
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D’Amico D, Fasce LA, Hoppe CE, Arturo López-Quintela M, Cyras VP. Superparamagnetic nanocomposites obtained by dispersion of ultrafine magnetic iron oxide nanoparticles in poly(3-hydroxybutyrate). Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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357
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Comparison of thermal and dielectric spectroscopy for nanocomposites based on polypropylene and Layered Double Hydroxide – Proof of interfaces. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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358
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Wang D, Hore MJA, Ye X, Zheng C, Murray CB, Composto RJ. Gold nanorod length controls dispersion, local ordering, and optical absorption in polymer nanocomposite films. SOFT MATTER 2014; 10:3404-3413. [PMID: 24643463 DOI: 10.1039/c3sm52514g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The dispersion, local orientation and optical absorption of polystyrene (PS, degree of polymerization P) nanocomposites containing PS-grafted gold nanorods (Au NRs, PS degree of polymerization N), with aspect ratios (ν = length/diameter) ranging from 2.5 to 6.3, are studied using quantitative scanning electron microscopy (SEM) and optical spectroscopy. The experimentally observed nanorod assemblies and optical absorptions are compared with predictions from self-consistent field theory (SCFT) and finite difference time domain (FDTD) calculations, respectively. A pair correlation function for Au NRs is calculated from SEM images, and contains no correlation peaks for P/N = 0.9, indicating nanorods are dispersed within the nanocomposite. Large correlation peaks are observed for P/N = 7.6, representative of interparticle separation distances within nanorod aggregates, which do not vary with ν. On the basis of SCFT calculations, aggregation is attributed to significant depletion-attraction forces in the composite for P/N > 1. When Au NRs disperse, the longitudinal surface plasmon resonance (LSPR) peak red shifts from the visible into the near-IR as ν increases. No shift in the dispersed LSPR position is observed for v = 2.5 and 3.3 upon aggregation because the ratio of the interparticle distance to the nanorod length is too large for surface plasmon coupling. However, for v = 6.3, significant coupling between surface plasmons leads to a blue shift of the LSPR by approximately 140 nm, in agreement with FDTD calculations.
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Affiliation(s)
- Dongliang Wang
- Department of Materials Science & Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA 19104, USA.
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359
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Lane JMD, Grest GS. Assembly of responsive-shape coated nanoparticles at water surfaces. NANOSCALE 2014; 6:5132-5137. [PMID: 24503935 DOI: 10.1039/c3nr04658c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nanoparticle (NP) assembly and aggregation can be controlled using a variety of organic coatings that bind to the nanoparticle surface and alter its affinity for solvent and other particles. We show that surprisingly simple short chain polymer coatings can be effectively used to selectively control the aggregation of very small nanoparticles by taking advantage of the environment-responsive shape produced by the coating's spontaneous asymmetry on high-curvature nanoparticles. Using extremely long molecular dynamics simulations of alkanethiol coated Au nanoparticles, we show that varying the terminal groups of a nanoparticle coating dramatically alters the coating shape at the water liquid-vapor interface, producing very different assembly morphologies. NPs with CH3-terminated coatings assemble into short linear groupings with a highly aligned structure at early time and then form more disordered clusters as these linear groupings further assemble. NPs with COOH-terminated coatings assemble into dimers and disordered clumps with no preferred alignment at short time and longer disordered chains of particles at longer times. We also find that the responsive shape of the coating continues to adapt to local environment during assembly. The orientations of chains within NP coatings are significantly different when the NPs are arranged in aggregates than when they are isolated.
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360
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Baeza GP, Genix AC, Degrandcourt C, Gummel J, Mujtaba A, Saalwächter K, Thurn-Albrecht T, Couty M, Oberdisse J. Studying Twin Samples Provides Evidence for a Unique Structure-Determining Parameter in Simplifed Industrial Nanocomposites. ACS Macro Lett 2014; 3:448-452. [PMID: 35590780 DOI: 10.1021/mz500137e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The structure of styrene-butadiene (SB) nanocomposites filled with industrial silica has been analyzed using electron microscopy and small-angle X-ray scattering. The grafting density per unit silica surface ρD3 was varied by adding graftable SB molecules. By comparing the filler structures at fixed ρD3 (so-called "twins"), a surprising match of the microstructures was evidenced. Mechanical measurements show that ρD3 also sets the modulus: it is then possible to tune the terminal relaxation time of nanocomposites via the chain length while leaving the modulus and structure unchanged.
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Affiliation(s)
- Guilhem P. Baeza
- Université Montpellier 2, Laboratoire Charles Coulomb
UMR 5221, F-34095 Montpellier, France
- Manufacture Française des Pneumatiques MICHELIN - Site de Ladoux, 23 place des Carmes Déchaux, F-63040 Clermont-Ferrand CEDEX 09, France
| | - Anne-Caroline Genix
- Université Montpellier 2, Laboratoire Charles Coulomb
UMR 5221, F-34095 Montpellier, France
- CNRS, Laboratoire Charles Coulomb
UMR 5221, F-34095 Montpellier, France
| | - Christophe Degrandcourt
- Manufacture Française des Pneumatiques MICHELIN - Site de Ladoux, 23 place des Carmes Déchaux, F-63040 Clermont-Ferrand CEDEX 09, France
| | - Jérémie Gummel
- European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz, BP 220, F-38043 Grenoble CEDEX 09, France
| | - Anas Mujtaba
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Kay Saalwächter
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Thomas Thurn-Albrecht
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Marc Couty
- Manufacture Française des Pneumatiques MICHELIN - Site de Ladoux, 23 place des Carmes Déchaux, F-63040 Clermont-Ferrand CEDEX 09, France
| | - Julian Oberdisse
- Université Montpellier 2, Laboratoire Charles Coulomb
UMR 5221, F-34095 Montpellier, France
- CNRS, Laboratoire Charles Coulomb
UMR 5221, F-34095 Montpellier, France
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361
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Khare KS, Khabaz F, Khare R. Effect of carbon nanotube functionalization on mechanical and thermal properties of cross-linked epoxy-carbon nanotube nanocomposites: role of strengthening the interfacial interactions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6098-6110. [PMID: 24606164 DOI: 10.1021/am405317x] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have used amido-amine functionalized carbon nanotubes (CNTs) that form covalent bonds with cross-linked epoxy matrices to elucidate the role of the matrix-filler interphase in the enhancement of mechanical and thermal properties in these nanocomposites. For the base case of nanocomposites of cross-linked epoxy and pristine single-walled CNTs, our previous work (Khare, K. S.; Khare, R. J. Phys. Chem. B 2013, 117, 7444-7454) has shown that weak matrix-filler interactions cause the interphase region in the nanocomposite to be more compressible. Furthermore, because of the weak matrix-filler interactions, the nanocomposite containing dispersed pristine CNTs has a glass transition temperature (Tg) that is ∼66 K lower than the neat polymer. In this work, we demonstrate that in spite of the presence of stiff CNTs in the nanocomposite, the Young's modulus of the nanocomposite containing dispersed pristine CNTs is virtually unchanged compared to the neat cross-linked epoxy. This observation suggests that the compressibility of the matrix-filler interphase interferes with the ability of the CNTs to reinforce the matrix. Furthermore, when the compressibility of the interphase is reduced by the use of amido-amine functionalized CNTs, the mechanical reinforcement due to the filler is more effective, resulting in a ∼50% increase in the Young's modulus compared to the neat cross-linked epoxy. Correspondingly, the functionalization of the CNTs also led to a recovery in the Tg making it effectively the same as the neat polymer and also resulted in a ∼12% increase in the thermal conductivity of the nanocomposite containing functionalized CNTs compared to that containing pristine CNTs. These results demonstrate that the functionalization of the CNTs facilitates the transfer of both mechanical load and thermal energy across the matrix-filler interface.
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Affiliation(s)
- Ketan S Khare
- Department of Chemical Engineering, Texas Tech University , Lubbock, Texas 79409-3121, United States
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362
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Gupta P, Nayak KK. Characteristics of protein-based biopolymer and its application. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23928] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Pratima Gupta
- Department of Biotechnology; National Institute of Technology Raipur; Chhattisgarh 492010 India
| | - Kush Kumar Nayak
- Department of Biotechnology; National Institute of Technology Raipur; Chhattisgarh 492010 India
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363
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Banc A, Genix AC, Chirat M, Dupas C, Caillol S, Sztucki M, Oberdisse J. Tuning Structure and Rheology of Silica–Latex Nanocomposites with the Molecular Weight of Matrix Chains: A Coupled SAXS–TEM–Simulation Approach. Macromolecules 2014. [DOI: 10.1021/ma500465n] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Amélie Banc
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Anne-Caroline Genix
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Mathieu Chirat
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Christelle Dupas
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
| | - Sylvain Caillol
- UMR
5253 CNRS-UM2-ENSCM-UM1, Equipe I.A.M., Institut Charles Gerhardt Montpellier, 8 rue de l’Ecole Normale, F-34 296 Montpellier Cedex 5, France
| | - Michael Sztucki
- European Synchrotron Radiation Facility, ESRF, 6 rue Jules Horowitz, BP 220, F-38
043, Grenoble, Cedex 9, France
| | - Julian Oberdisse
- Laboratoire
Charles Coulomb, UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire
Charles Coulomb, UMR 5221, CNRS, F-34 095, Montpellier, France
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364
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CO2gas barrier properties in polymer nanocomposite coatings containing Li-hectorite clays. J Appl Polym Sci 2014. [DOI: 10.1002/app.40805] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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365
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Vennerberg D, Rueger Z, Kessler MR. Effect of silane structure on the properties of silanized multiwalled carbon nanotube-epoxy nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.02.018] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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366
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Bandyopadhyay J, Sinha Ray S, Scriba M, Wesley-Smith J. A combined experimental and theoretical approach to establish the relationship between shear force and clay platelet delamination in melt-processed polypropylene nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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367
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Takeuchi K, Terano M, Taniike T. Sol–gel synthesis of nano-sized silica in confined amorphous space of polypropylene: Impact of nano-level structures of silica on physical properties of resultant nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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368
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A new mechanism for the silica nanoparticle dispersion–agglomeration transition in a poly(methyl methacrylate)/silica hybrid suspension. Polym J 2014. [DOI: 10.1038/pj.2014.6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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369
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Dalmas F, Genevaz N, Roth M, Jestin J, Leroy E. 3D Dispersion of Spherical Silica Nanoparticles in Polymer Nanocomposites: A Quantitative Study by Electron Tomography. Macromolecules 2014. [DOI: 10.1021/ma500075s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Florent Dalmas
- ICMPE (Institut
de Chimie et des Matériaux Paris-Est), UMR 7182, CNRS/Université Paris-Est Créteil, 2-8 rue Henri Dunant, 94320 Thiais, France
| | - Nicolas Genevaz
- LLB (Laboratoire Léon Brillouin), CEA Saclay, 91191 Gif-sur-Yvette, Cedex, France
| | - Matthias Roth
- ICMPE (Institut
de Chimie et des Matériaux Paris-Est), UMR 7182, CNRS/Université Paris-Est Créteil, 2-8 rue Henri Dunant, 94320 Thiais, France
| | - Jacques Jestin
- LLB (Laboratoire Léon Brillouin), CEA Saclay, 91191 Gif-sur-Yvette, Cedex, France
| | - Eric Leroy
- ICMPE (Institut
de Chimie et des Matériaux Paris-Est), UMR 7182, CNRS/Université Paris-Est Créteil, 2-8 rue Henri Dunant, 94320 Thiais, France
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370
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Cao YJ, Zhu D, Ngai T, Qin L, Wu C, Shen J. Dielectric investigations on how Mg salt is dispersed in and released from polylactic acid. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1421-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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371
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Xu JZ, Zhong GJ, Hsiao BS, Fu Q, Li ZM. Low-dimensional carbonaceous nanofiller induced polymer crystallization. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.06.005] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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372
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Mould S, Barbas J, Machado AV, Nóbrega JM, Covas JA. Preparation of Polymer-Clay Nanocomposites by Melt Mixing in a Twin Screw Extruder: Using On-Line SAOS Rheometry to Assess the Level of Dispersion. INT POLYM PROC 2014. [DOI: 10.3139/217.2803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
A prototype on-line rotational rheometer was fixed between a twin screw extruder and a multi-rod die of an industrial pelletization line used for the manufacture of polymer-clay nanocomposites. After diverting the required amount of melt to the device, measurements were performed in small amplitude oscillatory shear and used to estimate the level of dispersion of the organoclay in the polypropylene matrix, by means of correlations that are commonly utilized. The aim is to determine whether changes in clay type, clay content, feed rate and screw speed cause detectable alterations in the rheological response and thus in the level of dispersion, with a view to practical process monitoring and control. The analysis of the data is supported by XRD and electron (scanning and transmission) microscopy observations.
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Affiliation(s)
- S. Mould
- Department of Polymer Engineering/IPC/I3N , University of Minho, Guimarães , Portugal
| | - J. Barbas
- Department of Polymer Engineering/IPC/I3N , University of Minho, Guimarães , Portugal
| | - A. V. Machado
- Department of Polymer Engineering/IPC/I3N , University of Minho, Guimarães , Portugal
| | - J. M. Nóbrega
- Department of Polymer Engineering/IPC/I3N , University of Minho, Guimarães , Portugal
| | - J. A. Covas
- Department of Polymer Engineering/IPC/I3N , University of Minho, Guimarães , Portugal
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373
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A thermo-rheological study on the structure property relationships in the reinforcement of nylon 6–POSS blends. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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374
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Das D, Satapathy BK. Designing tough and fracture resistant polypropylene/multi wall carbon nanotubes nanocomposites by controlling stereo-complexity and dispersion morphology. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.matdes.2013.08.067] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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375
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TADANO T, SUZUKI S, ZHU R, HOSHI T, SASAKI D, HAGIWARA T, SAWAGUCHI T. Preparation of Transparent Hybrid Films Based on Dispersion-Agglomeration Behavior in Hydroxypropylcellulose/SiO2 Nanoparticle Aqueous Suspensions. KOBUNSHI RONBUNSHU 2014. [DOI: 10.1295/koron.71.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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376
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Holley D, Ruppel M, Mays J, Urban V, Baskaran D. Polystyrene nanoparticles with tunable interfaces and softness. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.11.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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377
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Shokrollahi P, Mehmanchi M, Atai M, Omidian H, Shokrolahi F. Effect of interface on mechanical properties and biodegradation of PCL HAp supramolecular nano-composites. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:23-35. [PMID: 24030697 DOI: 10.1007/s10856-013-5039-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 08/27/2013] [Indexed: 06/02/2023]
Abstract
This research explores the correlation between the structural properties of supramolecular biocomposites and their mechanical strength. Hybrid biocomposites composed of surface-modified hydroxyapatite nano-particles and supramolecular polycaprolactone (SP PCL), were prepared at different compositions, and their mechanical, thermal and viscoelastic properties as well as biodegradability, biocompatibility and cytotoxicity were evaluated in vitro. The results were compared with those for SP PCL/naked hydroxyapatite nano-composites. We show that surface modification of hydroxyapatite nanoparticles resulted in outstanding improvement of tensile strength and modulus up to 3.6 and 2.2-fold, respectively. At above 10 wt% HAp and 20 wt% HApUPy, heterogeneous nano-composites with inferior mechanical properties were obtained. Based on rheological (in steady shear mode) and small/wide angle X-ray scattering measurements, unusual improved mechanical properties were ascribed to the formation of supramolecular clusters around nanoparticles. In-vitro degradation of the supramolecular nano-composites was also studied to investigate the overall product biodegradation as well as toxicity of the degradation product(s).
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Affiliation(s)
- Parvin Shokrollahi
- Department of Biomaterials, Iran Polymer and Petrochemical Institute, P.O. Box 14965/159, Tehran, Iran,
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378
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Vale H, Daiss A, Naeem O, Šeda L, Becker K, Hungenberg KD. Models in the Polymer Industry: What Present? What Future? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/masy.201300056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- H. Vale
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
| | - A. Daiss
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
| | - O. Naeem
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
| | - L. Šeda
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
| | - K. Becker
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
| | - K.-D. Hungenberg
- Polymer Processing & Engineering; BASF SE; Carl-Bosch-Strasse 67056 Ludwigshafen Germany
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379
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Jancar J, Hoy RS, Lesser AJ, Jancarova E, Zidek J. Effect of Particle Size, Temperature, and Deformation Rate on the Plastic Flow and Strain Hardening Response of PMMA Composites. Macromolecules 2013. [DOI: 10.1021/ma400965c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Josef Jancar
- CEITEC, Brno University of Technology, 61200 Brno, Czech Republic
| | - Robert S. Hoy
- Department
of Physics, University of South Florida, Tampa, Florida, 33620, United States
| | - Alan J. Lesser
- Department of Polymer Engineering and Science, University of Massachussetts, Amherst, Massachussetts, 01003, United States
| | - Ema Jancarova
- CEITEC, Brno University of Technology, 61200 Brno, Czech Republic
| | - Jan Zidek
- CEITEC, Brno University of Technology, 61200 Brno, Czech Republic
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380
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Liu Q, Seveyrat L, Belhora F, Guyomar D. Investigation of polymer-coated nano silver/polyurethane nanocomposites for electromechanical applications. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0309-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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381
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PREPARATION AND RELAXATION BEHAVIOR OF LAYERED DOUBLE HYDROXIDE MODIFIED PU/PMMA NANOCOMPOSITES. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.13015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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382
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Tunusoğlu Ö, Demir MM. Tailored CeO2 Nanoparticles Surface in Free Radical Bulk Polymerization of Methyl Methacrylate. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401872y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Özge Tunusoğlu
- Department
of Chemistry and ‡Department of Material Science and Engineering, Izmir Institute of Technology 35430 Gülbahce, Urla, Izmir, Turkey
| | - Mustafa M. Demir
- Department
of Chemistry and ‡Department of Material Science and Engineering, Izmir Institute of Technology 35430 Gülbahce, Urla, Izmir, Turkey
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383
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Huang HD, Xu JZ, Fan Y, Xu L, Li ZM. Poly(l-lactic acid) Crystallization in a Confined Space Containing Graphene Oxide Nanosheets. J Phys Chem B 2013; 117:10641-51. [DOI: 10.1021/jp4055796] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hua-Dong Huang
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Jia-Zhuang Xu
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Ying Fan
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Ling Xu
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Zhong-Ming Li
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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384
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Subramaniam K, Das A, Stöckelhuber KW, Heinrich G. ELASTOMER COMPOSITES BASED ON CARBON NANOTUBES AND IONIC LIQUID. RUBBER CHEMISTRY AND TECHNOLOGY 2013. [DOI: 10.5254/rct.13.86984] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Carbon nanotubes (CNTs) are known for excellent electrical conductivity and high elastic modulus. But difficulties arise in realizing their potential in matrices due to their existence in the form of aggregates or agglomerates. A simplified mixing technique using ionic liquid (IL) was developed to improve the dispersion of CNTs in elastomers. At first, CNTs were modified using an IL, 1-butyl-3-methyl-imidazolium-bis-(trifluoromethylsulfonyl)-imide in a mortar and pestle, and later, the modified tubes were incorporated into elastomers using a two-roll mill. The effect of modified tubes and IL on polar polychloroprene and nonpolar solution styrene butadiene rubber is studied. Enhanced dispersion and networking of CNTs can be achieved using this technique, based on which highly conducting composites were developed. Moreover, the composites with modified CNTs exhibited higher mechanical properties (tensile modulus, hardness) and thermal stability than the composites with unmodified CNTs. ILs are also found to have multifunctional roles (as antioxidants, as coupling agents) in the composites. The applications of composites with a particular focus on actuators and sensors are also discussed.
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Affiliation(s)
- Kalaivani Subramaniam
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, Institut für Werkstoffwissenschaft, Helmholzstraße 7, 01069 Dresden, Germany
| | - Amit Das
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
| | | | - Gert Heinrich
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, Institut für Werkstoffwissenschaft, Helmholzstraße 7, 01069 Dresden, Germany
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385
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Nuhiji B, Attard D, Thorogood G, Hanley T, Magniez K, Bungur J, Fox B. The Effect of a Rapid Heating Rate, Mechanical Vibration and Surfactant Chemistry on the Structure-Property Relationships of Epoxy/Clay Nanocomposites. MATERIALS (BASEL, SWITZERLAND) 2013; 6:3624-3640. [PMID: 28811457 PMCID: PMC5521326 DOI: 10.3390/ma6083624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/06/2013] [Accepted: 08/09/2013] [Indexed: 06/07/2023]
Abstract
The role of processing conditions and intercalant chemistry in montmorillonite clays on the dispersion, morphology and mechanical properties of two epoxy/clay nanocomposite systems was investigated in this paper. This work highlights the importance of employing complementary techniques (X-ray diffraction, small angle X-ray scattering, optical microscopy and transmission electron microscopy) to correlate nanomorphology to macroscale properties. Materials were prepared using an out of autoclave manufacturing process equipped to generate rapid heating rates and mechanical vibration. The results suggested that the quaternary ammonium surfactant on C30B clay reacted with the epoxy during cure, while the primary ammonium surfactant (I.30E) catalysed the polymerisation reaction. These effects led to important differences in nanocomposite clay morphologies. The use of mechanical vibration at 4 Hz prior to matrix gelation was found to facilitate clay dispersion and to reduce the area fraction of I.30E clay agglomerates in addition to increasing flexural strength by over 40%.
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Affiliation(s)
- Betime Nuhiji
- Institute for Technology Research and Innovation (ITRI), Deakin University, Pigdons Road, Waurn Ponds, Geelong 3217, Australia.
| | - Darren Attard
- Australian Nuclear Science and Technology Organisation, PMB 1, Menai NSW 2234, Australia.
| | - Gordon Thorogood
- Australian Nuclear Science and Technology Organisation, PMB 1, Menai NSW 2234, Australia.
| | - Tracey Hanley
- Australian Nuclear Science and Technology Organisation, PMB 1, Menai NSW 2234, Australia.
| | - Kevin Magniez
- Institute for Technology Research and Innovation (ITRI), Deakin University, Pigdons Road, Waurn Ponds, Geelong 3217, Australia.
| | - Jenny Bungur
- Institute for Technology Research and Innovation (ITRI), Deakin University, Pigdons Road, Waurn Ponds, Geelong 3217, Australia.
| | - Bronwyn Fox
- Institute for Technology Research and Innovation (ITRI), Deakin University, Pigdons Road, Waurn Ponds, Geelong 3217, Australia.
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386
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Baeza GP, Genix AC, Degrandcourt C, Petitjean L, Gummel J, Schweins R, Couty M, Oberdisse J. Effect of Grafting on Rheology and Structure of a Simplified Industrial Nanocomposite Silica/SBR. Macromolecules 2013. [DOI: 10.1021/ma401016d] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Guilhem P. Baeza
- Laboratoire Charles Coulomb
UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire Charles Coulomb
UMR 5221, CNRS, F-34 095, Montpellier,
France
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23, place
des Carmes Déchaux, F-63 040 Clermont-Ferrand, Cedex 9, France
| | - Anne-Caroline Genix
- Laboratoire Charles Coulomb
UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire Charles Coulomb
UMR 5221, CNRS, F-34 095, Montpellier,
France
| | - Christophe Degrandcourt
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23, place
des Carmes Déchaux, F-63 040 Clermont-Ferrand, Cedex 9, France
| | - Laurent Petitjean
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23, place
des Carmes Déchaux, F-63 040 Clermont-Ferrand, Cedex 9, France
| | - Jérémie Gummel
- European Synchrotron Radiation Facility, ESRF, 6 rue Jules Horowitz, BP 220,
F-38 043, Grenoble, Cedex 9, France
| | - Ralf Schweins
- Institut Laue-Langevin, DS/LSS, F-38 042
Grenoble, France
| | - Marc Couty
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23, place
des Carmes Déchaux, F-63 040 Clermont-Ferrand, Cedex 9, France
| | - Julian Oberdisse
- Laboratoire Charles Coulomb
UMR 5221, Université Montpellier 2, F-34 095, Montpellier, France
- Laboratoire Charles Coulomb
UMR 5221, CNRS, F-34 095, Montpellier,
France
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387
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Cassagnau P. Linear viscoelasticity and dynamics of suspensions and molten polymers filled with nanoparticles of different aspect ratios. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.06.012] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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388
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Hickey RJ, Meng X, Zhang P, Park SJ. Low-dimensional nanoparticle clustering in polymer micelles and their transverse relaxivity rates. ACS NANO 2013; 7:5824-33. [PMID: 23731021 PMCID: PMC4506779 DOI: 10.1021/nn400824b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
One- or two-dimensional arrays of iron oxide nanoparticles were formed in colloidal assemblies of amphiphilic polymers. Electron tomography imaging revealed that nanoparticles are arranged into one-dimensional strings in magneto-micelles or two-dimensional sheets in magneto-core/shell assemblies. The distinct directional assembly behavior was attributed to the interparticle interaction relative to the nanoparticle-polymer interaction, which was modulated by varying the cosolvent used for the solution phase self-assembly. Magneto-core/shell assemblies with varying structural parameters were formed with a range of different sized as-synthesized nanoparticles. The transverse magnetic relaxivity rates (r2) of a series of different assemblies were determined to examine the effect of nanoparticle arrangement on the magnetic relaxivity for their potential applications in MRI. The results indicated that the assembly structure of nanoparticles in polymer micelles significantly affects the r2 of surrounding water, providing a way to control magnetic relaxivity.
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Affiliation(s)
- Robert J. Hickey
- Department of Chemistry, University of Pennsylvania, 231 S South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Xin Meng
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 Fifth Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Peijun Zhang
- Department of Structural Biology, University of Pittsburgh School of Medicine, 3501 Fifth Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - So-Jung Park
- Department of Chemistry, University of Pennsylvania, 231 S South 34th Street, Philadelphia, Pennsylvania 19104, United States
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389
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Khare KS, Khare R. Effect of Carbon Nanotube Dispersion on Glass Transition in Cross-Linked Epoxy–Carbon Nanotube Nanocomposites: Role of Interfacial Interactions. J Phys Chem B 2013; 117:7444-54. [DOI: 10.1021/jp401614p] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ketan S. Khare
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | - Rajesh Khare
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
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390
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Pandey YN, Papakonstantopoulos GJ, Doxastakis M. Polymer/Nanoparticle Interactions: Bridging the Gap. Macromolecules 2013. [DOI: 10.1021/ma400444w] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yogendra Narayan Pandey
- Department of Chemical and Biomolecular
Engineering, University of Houston, Houston,
Texas 77004, United States
| | | | - Manolis Doxastakis
- Department of Chemical and Biomolecular
Engineering, University of Houston, Houston,
Texas 77004, United States
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391
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Gerasin VA, Antipov EM, Karbushev VV, Kulichikhin VG, Karpacheva GP, Talroze RV, Kudryavtsev YV. New approaches to the development of hybrid nanocomposites: from structural materials to high-tech applications. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n04abeh004322] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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392
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Lin CC, Gam S, Meth JS, Clarke N, Winey KI, Composto RJ. Do Attractive Polymer–Nanoparticle Interactions Retard Polymer Diffusion in Nanocomposites? Macromolecules 2013. [DOI: 10.1021/ma4000557] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chia-Chun Lin
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Sangah Gam
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Jeffrey S. Meth
- Central Research & Development, DuPont Co., Wilmington, Delaware, 19880-0400, United States
| | - Nigel Clarke
- Department of Physics
and Astronomy, University of Sheffield,
Sheffield S3 7RH, United Kingdom
| | - Karen I. Winey
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Russell J. Composto
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
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393
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Lo Verso F, Yelash L, Binder K. Dynamics of Macromolecules Grafted in Spherical Brushes under Good Solvent Conditions. Macromolecules 2013. [DOI: 10.1021/ma400446r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Federica Lo Verso
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudinger
Weg 7, D-55099 Mainz, Germany
- Centro de Fisica de Materiales, CSIC/UPV Pseo, Manuel de Lardizabal 5, 20018 Donostia-San
Sebastian, Spain
- Materials Physics Center MPC, Paseo Manuel de Lardizȧbal 5, 20018
San Sebastiȧn, Spain
| | - Leonid Yelash
- Institut
für Mathematik, Johannes Gutenberg-Universität Mainz, Staudinger
Weg 9, D-55099 Mainz, Germany
| | - Kurt Binder
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudinger
Weg 7, D-55099 Mainz, Germany
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394
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Jouault N, Moll JF, Meng D, Windsor K, Ramcharan S, Kearney C, Kumar SK. Bound Polymer Layer in Nanocomposites. ACS Macro Lett 2013; 2:371-374. [PMID: 35581840 DOI: 10.1021/mz300646a] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There has been considerable interest in characterizing the polymer layer that is effectively irreversibly bound to nanoparticles (NPs) because it is thought to underpin the unusual thermomechanical properties of polymer nanocomposites (PNC). We study PNCs formed by mixing silica nanoparticles (NPs) with poly-2-vinylpyridine (P2VP) and compare the bound layer thickness δ determined by three different methods. We show that the thickness obtained by thermogravimetric analysis (TGA) and assuming that the bound layer has a density corresponding to a dense melt clearly underestimates the real bound layer thickness. A more realistic extent of the bound layer is obtained by in situ measurements of the interaction pair potential between NPs in PNCs via analysis of TEM micrographs; we verify these estimates using Dynamic Light Scattering (DLS) in θ solvent. Our results confirm the existence of long-ranged interactions between NPs corresponding roughly in size to the radius of gyration of the bound chains.
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Affiliation(s)
- Nicolas Jouault
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
| | - Joseph F. Moll
- Department of Chemistry, Columbia University, 5000 Broadway,
New York, New York 10027, United States
| | - Dong Meng
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
| | - Kendra Windsor
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
| | - Stacy Ramcharan
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
| | - Clare Kearney
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
| | - Sanat K. Kumar
- Department of Chemical
Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, United States
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395
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Crawford MK, Smalley RJ, Cohen G, Hogan B, Wood B, Kumar SK, Melnichenko YB, He L, Guise W, Hammouda B. Chain conformation in polymer nanocomposites with uniformly dispersed nanoparticles. PHYSICAL REVIEW LETTERS 2013; 110:196001. [PMID: 23705720 DOI: 10.1103/physrevlett.110.196001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Indexed: 05/28/2023]
Abstract
The effect of nanoparticles (NP) on chain dimensions in polymer melts has been the source of considerable theoretical and experimental controversy. We exploit our ability to ensure a spatially uniform dispersion of 13 nm silica NPs miscible in polystyrene melts, together with neutron scattering, x-ray scattering, and transmission electron microscopy, to show that there is no measurable change in the polymer size in miscible mixtures, regardless of the relative sizes of the chains and the nanoparticles, and for NP loadings as high as 32.7 vol%. Our results provide a firm basis from which to understand the properties of polymer nanocomposites.
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Affiliation(s)
- M K Crawford
- DuPont Central Research and Development, E400/5424, Wilmington, Delaware 19880-0400, USA
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396
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Kumar SK, Jouault N, Benicewicz B, Neely T. Nanocomposites with Polymer Grafted Nanoparticles. Macromolecules 2013. [DOI: 10.1021/ma4001385] [Citation(s) in RCA: 594] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United
States
| | - Nicolas Jouault
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United
States
| | - Brian Benicewicz
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Tony Neely
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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397
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Zeinolebadi A, Stribeck N, Vuluga Z, Schloen C, Botta S, Sari MG. SAXS investigation of structure-property relationship of polypropylene/montmorillonite composites during load cycling. POLYM ADVAN TECHNOL 2013. [DOI: 10.1002/pat.3132] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ahmad Zeinolebadi
- Institute TMC, Department of Chemistry; University of Hamburg; Bundesstr. 45; 20146; Hamburg; Germany
| | - Norbert Stribeck
- Institute TMC, Department of Chemistry; University of Hamburg; Bundesstr. 45; 20146; Hamburg; Germany
| | - Zina Vuluga
- National Research and Development Institute; Chemistry and Petrochemistry-ICECHIM; Bucharest; Romania
| | - Christoph Schloen
- Institute TMC, Department of Chemistry; University of Hamburg; Bundesstr. 45; 20146; Hamburg; Germany
| | - Stephan Botta
- HASYLAB at DESY; Notkestr. 85; D-22603; Hamburg; Germany
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398
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Raos G, Sluckin TJ. Pulling Polymers on Energetically Disordered Surfaces: Molecular Dynamics Tests of Linear and Non-linear Response. MACROMOL THEOR SIMUL 2013. [DOI: 10.1002/mats.201200075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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399
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Mould ST, Barbas JM, Machado AV, Nóbrega JM, Covas JA. Monitoring the Production of Polymer Nanocomposites by Melt Compounding with On-line Rheometry. INT POLYM PROC 2013. [DOI: 10.3139/217.2597] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Polymer nanocomposites are often prepared by melt compounding due to the suitability of the latter to industrial scale production. Even though monitoring the production process for quality control and/or optimization purposes is generally done off-line, the possibility of using on-line oscillatory rheometry has many inherent advantages. This work illustrates the use of a prototype rheometer to monitor the production of polymer nanocomposites by making measurements at specific locations along the extruder axis. The device is presented and its operation is explained. Examples of its use to characterize polypropylene and polyamide matrix nanocomposites with organoclays and carbon nanotubes are discussed, thus demonstrating the usefulness of the device.
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Affiliation(s)
- S. T. Mould
- Institute for Polymers and Composites/I3N, University of Minho, Guimarães, Portugal
| | - J. M. Barbas
- Institute for Polymers and Composites/I3N, University of Minho, Guimarães, Portugal
| | - A. V. Machado
- Institute for Polymers and Composites/I3N, University of Minho, Guimarães, Portugal
| | - J. M. Nóbrega
- Institute for Polymers and Composites/I3N, University of Minho, Guimarães, Portugal
| | - J. A. Covas
- Institute for Polymers and Composites/I3N, University of Minho, Guimarães, Portugal
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400
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Ferdous SF, Sarker MF, Adnan A. Role of nanoparticle dispersion and filler-matrix interface on the matrix dominated failure of rigid C60-PE nanocomposites: A molecular dynamics simulation study. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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