51
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Cherdhirankorn T, Harmandaris V, Juhari A, Voudouris P, Fytas G, Kremer K, Koynov K. Fluorescence Correlation Spectroscopy Study of Molecular Probe Diffusion in Polymer Melts. Macromolecules 2009. [DOI: 10.1021/ma900605z] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - V. Harmandaris
- Max-Planck-Institute of Polymer Research, D-55128 Mainz, Germany
- Department of Applied Mathematics, University of Crete, 71110 Heraklion, Greece
| | - A. Juhari
- Max-Planck-Institute of Polymer Research, D-55128 Mainz, Germany
| | - P. Voudouris
- Departments of Chemistry and Materials Science and Technology, University of Crete and FORTH, 71110 Heraklion, Greece
| | - G. Fytas
- Max-Planck-Institute of Polymer Research, D-55128 Mainz, Germany
- Departments of Chemistry and Materials Science and Technology, University of Crete and FORTH, 71110 Heraklion, Greece
| | - K. Kremer
- Max-Planck-Institute of Polymer Research, D-55128 Mainz, Germany
| | - K. Koynov
- Max-Planck-Institute of Polymer Research, D-55128 Mainz, Germany
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52
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Gotlib IY, Filyukov DV, de Leeuw SW. Molecular dynamic simulation of polymer and polymer-oxide nanoclusters. POLYMER SCIENCE SERIES A 2009. [DOI: 10.1134/s0965545x09050149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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53
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Bernardo P, Drioli E, Golemme G. Membrane Gas Separation: A Review/State of the Art. Ind Eng Chem Res 2009. [DOI: 10.1021/ie8019032] [Citation(s) in RCA: 1532] [Impact Index Per Article: 102.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Bernardo
- National Research Council−Institute for Membrane Technology (ITM−CNR), Via Pietro Bucci, c/o University of Calabria, cubo 17/C, 87030 Rende, Italy, and University of Calabria, Department of Chemical Engineering and Materials and INSTM Consortium, cubo 45/A, Via Pietro Bucci, 87036 Rende, Italy
| | - E. Drioli
- National Research Council−Institute for Membrane Technology (ITM−CNR), Via Pietro Bucci, c/o University of Calabria, cubo 17/C, 87030 Rende, Italy, and University of Calabria, Department of Chemical Engineering and Materials and INSTM Consortium, cubo 45/A, Via Pietro Bucci, 87036 Rende, Italy
| | - G. Golemme
- National Research Council−Institute for Membrane Technology (ITM−CNR), Via Pietro Bucci, c/o University of Calabria, cubo 17/C, 87030 Rende, Italy, and University of Calabria, Department of Chemical Engineering and Materials and INSTM Consortium, cubo 45/A, Via Pietro Bucci, 87036 Rende, Italy
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54
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Gestoso P, Meunier M. Barrier properties of small gas molecules in amorphous cis-1,4-polybutadiene estimated by simulation. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020802183559] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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55
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Finite element assessment of the potential of platelet-filled polymers for membrane gas separations. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.07.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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56
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Transport properties of a co-poly(amide-12-b-ethylene oxide) membrane: A comparative study between experimental and molecular modelling results. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.06.031] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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57
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Tsolou G, Mavrantzas VG, Makrodimitri ZA, Economou IG, Gani R. Atomistic Simulation of the Sorption of Small Gas Molecules in Polyisobutylene. Macromolecules 2008. [DOI: 10.1021/ma8007652] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | | | | | | | - Rafiqul Gani
- CAPEC, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
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58
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Özal TA, Peter C, Hess B, van der Vegt NFA. Modeling Solubilities of Additives in Polymer Microstructures: Single-Step Perturbation Method Based on a Soft-Cavity Reference State. Macromolecules 2008. [DOI: 10.1021/ma702329q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Tugba A. Özal
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Christine Peter
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Berk Hess
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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59
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Atomistic packing model and free volume distribution of a polymer with intrinsic microporosity (PIM-1). J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.02.038] [Citation(s) in RCA: 198] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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60
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Gestoso P, Karayiannis NC. Molecular simulation of the effect of temperature and architecture on polyethylene barrier properties. J Phys Chem B 2008; 112:5646-60. [PMID: 18407702 DOI: 10.1021/jp073676q] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present a multiscale approach for calculating the low-concentration solubility, diffusivity, and selectivity of small molecules through polymer matrixes. The proposed modeling scheme consists of two main stages; first, thoroughly equilibrated and representative poly(ethylene) (PE) atomistic melt configurations were obtained through the application of a Monte Carlo (MC) scheme based on advanced chain-connectivity altering moves (linear architectures) or the combination of localized MC moves followed by molecular dynamics. In the second phase, transition-state theory (TST), as proposed by Gusev and Suter [Gusev, A. A.; Suter, U. W. J. Chem. Phys. 1993, 99, 2228], was invoked in a coarser level of description to calculate the barrier properties of the studied macromolecules to small gas molecules at infinite dilution. The multiscale methodology was successfully applied on PE melts characterized by various molecular weights (MW) (from C78 up to C1000) and polydispersity indices at a wide range of temperature conditions. The effect of molecular architecture on the barrier properties was examined through the comparison between linear and short-chain branched structures bearing the same total number of carbon atoms. Simulation results were found to be in very good agreement with available experimental data. Additionally, the new scheme has been further validated by comparing the qualitative behavior of solubility, diffusivity, and selectivity with previously reported trends in the literature based on both experimental and simulation studies. The present study concludes that density plays a dominant role that determines the behavior of the polymer as a barrier material, especially in terms of diffusivity. Additionally, it is evidenced that short-chain branching has a small effect on the barrier properties of PE when the comparison is performed on purely amorphous samples. The hierarchical method presented here not only is faster when compared against conventional molecular dynamics simulations, but in some cases, like the vicinity of the glass transition temperature or for long polymer chain melts, it opens the way to the calculation of the barrier properties at realistic simulation times.
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Affiliation(s)
- Patricia Gestoso
- Accelrys Ltd., 334 Cambridge Science Park, Cambridge, CB4 OWN, UK.
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61
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Neyertz S, Brown D. Molecular Dynamics Simulations of Oxygen Transport through a Fully Atomistic Polyimide Membrane. Macromolecules 2008. [DOI: 10.1021/ma7026676] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sylvie Neyertz
- LMOPS-UMR CNRS 5041, University of Savoie, Bât IUT, 73376 Le Bourget du Lac Cedex, France
| | - David Brown
- LMOPS-UMR CNRS 5041, University of Savoie, Bât IUT, 73376 Le Bourget du Lac Cedex, France
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62
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Hess B, Peter C, Ozal T, van der Vegt NFA. Fast-Growth Thermodynamic Integration: Calculating Excess Chemical Potentials of Additive Molecules in Polymer Microstructures. Macromolecules 2008. [DOI: 10.1021/ma702070n] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Berk Hess
- Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Christine Peter
- Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Tugba Ozal
- Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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63
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64
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Valuev AA, Kaklyugin AS, Norman HE. Molecular modelling of the chemical interaction of atoms and molecules with a surface. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1995v064n07abeh000166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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65
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Harmandaris VA, Adhikari NP, van der Vegt NFA, Kremer K, Mann BA, Voelkel R, Weiss H, Liew C. Ethylbenzene Diffusion in Polystyrene: United Atom Atomistic/Coarse Grained Simulations and Experiments. Macromolecules 2007. [DOI: 10.1021/ma070201o] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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66
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Willmore FT, Wang XY, Sanchez IC. Gas diffusion in glasses via a probabilistic molecular dynamics. J Chem Phys 2007; 126:234502. [PMID: 17600420 DOI: 10.1063/1.2737052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A probabilistic protocol which makes possible the calculation of the diffusivity of light gases in amorphous materials from limited Monte Carlo and molecular dynamics data is presented. Diffusion coefficients are calculated for helium and methane in polystyrene, and for helium, neon, and methane in three pairs of polysulfone isomers. Results include diffusion coefficients as small as 10(-9) cm2/s and are in good agreement with results obtained from traditional molecular dynamics and with available experimental data.
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Affiliation(s)
- Frank T Willmore
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
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67
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Vitrac O, Hayert M. Effect of the distribution of sorption sites on transport diffusivities: A contribution to the transport of medium-weight-molecules in polymeric materials. Chem Eng Sci 2007. [DOI: 10.1016/j.ces.2007.01.073] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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68
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Macchione M, Jansen JC, De Luca G, Tocci E, Longeri M, Drioli E. Experimental analysis and simulation of the gas transport in dense Hyflon® AD60X membranes: Influence of residual solvent. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.02.068] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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69
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Siegert MR, Heuchel M, Hofmann D. A generalized direct-particle-deletion scheme for the calculation of chemical potential and solubilities of small- and medium-sized molecules in amorphous polymers. J Comput Chem 2007; 28:877-89. [PMID: 17238170 DOI: 10.1002/jcc.20594] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The development, validation, and first applications of a generalized version of an inverse Widom method are described. It permits the calculation of solubility coefficients for molecules as large as, e.g., benzene in all polymers for which reasonable forcefield parameters exist. Predicting the solubility is a key to the knowledge-based design of materials utilized to solve permeability related problems. For long time, particle insertion methods, such as the Widom method, were the only way to predict solubilities from molecular models, but they, in most cases, only worked well for rather small penetrants (e.g., H2, O2, N2). Therefore, a few years ago, a new particle deletion algorithm "DPD" was introduced by Boulougouris, Economou, and Theodorou to overcome this problem in principle. The related computer code was, however, only applicable to special, relatively simple model systems. As application examples for the generalized version described here, solubility calculations for nitrogen, oxygen, and benzene in poly(dimethyl siloxane) are presented.
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Affiliation(s)
- Martin R Siegert
- GKSS Research Center, Institute of Polymer Research, Kantstrasse 55, 14513 Teltow, Germany
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70
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A new multiscale modeling approach for the prediction of mechanical properties of polymer-based nanomaterials. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.10.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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71
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Kucukpinar E, Doruker P. Molecular simulations of gas transport in nitrile rubber and styrene butadiene rubber. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.08.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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72
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Adolf DB, Butler SN, Drew PM, Hotston S, Karatasos K. Computational polymer dynamics via DL_POLY. MOLECULAR SIMULATION 2006. [DOI: 10.1080/08927020601096176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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73
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74
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Purdue MJ, MacElroy JMD, O'Shea DF, Okuom MO, Blum FD. Molecular dynamics of polystyrene solutions in microwave fields. J Chem Phys 2006; 124:204904. [PMID: 16774381 DOI: 10.1063/1.2197496] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Equilibrium and nonequilibrium molecular dynamics simulation techniques were used to assess the influence of an applied microwave field on the dynamics of methylamine-methanol and methylamine-dimethylformamide (DMF) solutions bound within atactic polystyrene over a range of polymer densities from 35 to 96 wt % polymer. Atomistically detailed systems were studied, ranging from 3000 to 10 644 particles, using previously established potential models. Structural and dynamical properties were determined in the canonical (NVT) ensemble at 298 K. The simulated DMF self-diffusion coefficients in polystyrene solutions were compared with the zero-field experimental results established with pulsed-gradient spin-echo NMR spectrometry. A simulated external microwave field, with a rms electric field intensity of 0.1 VA, was applied to these systems and the simulated dynamical results over field frequencies up to 10(4) GHz were compared with the zero-field values. Simulated evidence of athermal effects on the diffusive characteristics of these mixtures is reported.
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Affiliation(s)
- Mark J Purdue
- UCD School of Chemical and Bioprocess Engineering, The Centre for Synthesis and Chemical Biology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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75
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Tocci E, Pullumbi P. Molecular simulation of realistic membrane models of alkylated PEEK membranes. MOLECULAR SIMULATION 2006. [DOI: 10.1080/08927020600654645] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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76
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Heuchel M, Böhning M, Hölck O, Siegert MR, Hofmann D. Atomistic packing models for experimentally investigated swelling states induced by CO2 in glassy polysulfone and poly(ether sulfone). ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20844] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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77
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Willmore FT, Wang X, Sanchez IC. Free volume properties of model fluids and polymers: Shape and connectivity. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20793] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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78
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Hornung G, Berkowitz B, Barkai N. Morphogen gradient formation in a complex environment: an anomalous diffusion model. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2005; 72:041916. [PMID: 16383429 DOI: 10.1103/physreve.72.041916] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2005] [Revised: 06/21/2005] [Indexed: 05/05/2023]
Abstract
Current models of morphogen-induced patterning assume that morphogens undergo normal, or Fickian, diffusion, although the validity of this assumption has never been examined. Here we argue that the interaction of morphogens with the complex extracellular surrounding may lead to anomalous diffusion. We present a phenomenological model that captures this interaction, and derive the properties of the morphogen profile under conditions of anomalous (non-Fickian) diffusion. In this context we consider the continuous time random walk formalism and extend its application to account for degradation of morphogen particles. We show that within the anomalous diffusion model, morphogen profiles are fundamentally distinct from the corresponding Fickian profiles. Differences were found in several key aspects, including the role of degradation in determining the profile, the rate by which it spreads in time and its long-term behavior. We analyze the effect of an abrupt change in the extracellular environment on the concentration profiles. Furthermore, we discuss the robustness of the morphogen distribution to fluctuations in morphogen production rate, and describe a feedback mechanism that can buffer such fluctuations. Our study also provides rigorous criteria to distinguish experimentally between Fickian and anomalous modes of morphogen transport.
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Affiliation(s)
- Gil Hornung
- Department of Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot, 76100 Israel
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79
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Application of transition state theory to the study of materials containing acryloxy and acrylate units. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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80
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Hu N, Fried J. The atomistic simulation of the gas permeability of poly(organophosphazenes). Part 2. Poly[bis(2,2,2-trifluoroethoxy)phosphazene]. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.03.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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81
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Yang X, Alexeev A, Michels MAJ, Loos J. Effect of Spatial Confinement on the Morphology Evolution of Thin Poly(p-phenylenevinylene)/Methanofullerene Composite Films. Macromolecules 2005. [DOI: 10.1021/ma047589x] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoniu Yang
- Group Polymer Physics, Laboratory of Materials and Interface Chemistry, and Laboratory of Polymer Technology, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, NL-5600 AX Eindhoven, The Netherlands; and NT-MDT, 124460 Moscow, Russia
| | - Alexander Alexeev
- Group Polymer Physics, Laboratory of Materials and Interface Chemistry, and Laboratory of Polymer Technology, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, NL-5600 AX Eindhoven, The Netherlands; and NT-MDT, 124460 Moscow, Russia
| | - Matthias A. J. Michels
- Group Polymer Physics, Laboratory of Materials and Interface Chemistry, and Laboratory of Polymer Technology, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, NL-5600 AX Eindhoven, The Netherlands; and NT-MDT, 124460 Moscow, Russia
| | - Joachim Loos
- Group Polymer Physics, Laboratory of Materials and Interface Chemistry, and Laboratory of Polymer Technology, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, NL-5600 AX Eindhoven, The Netherlands; and NT-MDT, 124460 Moscow, Russia
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82
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De Luca G, Tocci E, Drioli E. Quantum and molecular mechanics calculations on modified silica nano ring. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.05.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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83
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McGonigle EA, Liggat JJ, Pethrick RA, Jenkins SD, Daly JH, Hayward D. Permeability of N2, Ar, He, O2, and CO2through as-extruded amorphous and biaxially oriented polyester films: Dependence on chain mobility. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/polb.20141] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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84
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Kucukpinar E, Doruker P. Effect of absorbed water on oxygen transport in EVOH matrices. A molecular dynamics study. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.03.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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85
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Effects of chain stiffness and penetrant size on penetrant diffusion in simple polymers: deduced relations from simulation and PRISM theory. POLYMER 2004. [DOI: 10.1016/j.polymer.2003.12.084] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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86
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Tunca C, Ford DM. A hierarchical approach to the molecular modeling of diffusion and adsorption at nonzero loading in microporous materials. Chem Eng Sci 2003. [DOI: 10.1016/s0009-2509(03)00201-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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87
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Curcó D, Zanuy D, Alemán C. EVEBAT: a fast strategy for the examination of the empty space in polymer matrices. J Comput Chem 2003; 24:1208-14. [PMID: 12820128 DOI: 10.1002/jcc.10254] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A very efficient strategy to evaluate the "free volume" and the "unoccupied volume" in polymer matrices is proposed. The method, which has been denoted EVEBAT (Empty Volume Evaluation Based on Atom-Types), emerges from the concept of atom type, which is the basis of a force field. Accordingly, the numerical treatment is minimized by analyzing the atom types used to describe the polymer matrix, which are always a few, rather than all the explicit, atoms involved in it. The performance of the new method has been pointed out by a detailed comparison with the classical insertion algorithms.
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Affiliation(s)
- David Curcó
- Departament d'Enginyeria Química, E.T.S. d'Enginyers Industrials de Barcelona, Universitat Politècnica de Catalunya, Diagonal 647, Barcelona E-08028, Spain.
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88
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89
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Saiz E, López González MM, Riande E, Guzmán J, Compañ V. Simulations of diffusive and sorption processes of gases in polyimide membranes: Comparison with experiments. Phys Chem Chem Phys 2003. [DOI: 10.1039/b300162h] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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90
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Tocci E, Bellacchio E, Russo N, Drioli E. Diffusion of gases in PEEKs membranes: molecular dynamics simulations. J Memb Sci 2002. [DOI: 10.1016/s0376-7388(01)00784-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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91
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Blomqvist J, Mannfors B, Pietilä LO. Amorphous cell studies of polyglycolic, poly(l-lactic), poly(l,d-lactic) and poly(glycolic/l-lactic) acids. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00312-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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92
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Dürr O, Volz T, Dieterich W, Nitzan A. Dynamic percolation theory for particle diffusion in a polymer network. J Chem Phys 2002. [DOI: 10.1063/1.1481763] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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93
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Tiemblo P, Saiz E, Guzmán J, Riande E. Comparison of Simulated and Experimental Transport of Gases in Commercial Poly(vinyl chloride). Macromolecules 2002. [DOI: 10.1021/ma011908s] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pilar Tiemblo
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química Física, Universidad de Alcalá, Alcalá de Henares, Madri, Spain
| | - Enrique Saiz
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química Física, Universidad de Alcalá, Alcalá de Henares, Madri, Spain
| | - Julio Guzmán
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química Física, Universidad de Alcalá, Alcalá de Henares, Madri, Spain
| | - Evaristo Riande
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química Física, Universidad de Alcalá, Alcalá de Henares, Madri, Spain
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López-González M, Saiz E, Guzmán J, Riande E. Experimental and simulation studies on the transport of gaseous diatomic molecules in polycarbonate membranes. J Chem Phys 2001. [DOI: 10.1063/1.1399038] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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96
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Goddard WA, Cagin T, Blanco M, Vaidehi N, Dasgupta S, Floriano W, Belmares M, Kua J, Zamanakos G, Kashihara S, Iotov M, Gao G. Strategies for multiscale modeling and simulation of organic materials: polymers and biopolymers. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1089-3156(01)00025-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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97
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Boshoff JHD, Lobo RF, Wagner NJ. Influence of Polymer Motion, Topology and Simulation Size on Penetrant Diffusion in Amorphous, Glassy Polymers: Diffusion of Helium in Polypropylene. Macromolecules 2001. [DOI: 10.1021/ma010255c] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan H. D. Boshoff
- Center for Molecular and Engineering Thermodynamics and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Raul F. Lobo
- Center for Molecular and Engineering Thermodynamics and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Norman J. Wagner
- Center for Molecular and Engineering Thermodynamics and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
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98
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López-González M, Saiz E, Guzmán J, Riande E. Experimental and Simulation Studies on the Transport of Argon in Polycarbonate Membranes. Macromolecules 2001. [DOI: 10.1021/ma0019508] [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)
- Mar López-González
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química-Física, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Enrique Saiz
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química-Física, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Julio Guzmán
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química-Física, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Evaristo Riande
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), 28006 Madrid, Spain, and Departamento de Química-Física, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
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Diffusion of small molecules in disordered media: study of the effect of kinetic and spatial heterogeneities. Chem Eng Sci 2001. [DOI: 10.1016/s0009-2509(00)00510-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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100
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Tocci E, Hofmann D, Paul D, Russo N, Drioli E. A molecular simulation study on gas diffusion in a dense poly(ether–ether–ketone) membrane. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00102-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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