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Zou Y, Yan L, Maillet B, Sidi-Boulenouar R, Brochard L, Coussot P. Critical Role of Boundary Conditions in Sorption Kinetics Measurements. Langmuir 2023; 39:18866-18879. [PMID: 38088832 DOI: 10.1021/acs.langmuir.3c02729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
In order to characterize the hygroscopic properties of cellulose-based materials, which can absorb large amounts of water from vapor in ambient air, or the adsorption capacity of pollutants or molecules in various porous materials, it is common to rely on sorption-desorption dynamic tests. This consists of observing the mass variation over time when the sample is placed in contact with a fluid containing the elements to be absorbed or adsorbed. Here, we focus on the case of a hygroscopic material in contact with air at a relative humidity (RH) differing from that at which it has been prepared. We show that the vapor mass flux going out of the sample follows from the solution of a vapor convection-diffusion problem along the surface and is proportional to the difference between the RH of the air flux and that along the surface with a multiplicative factor (δ) depending only on the characteristics of the air flux and the geometry of the system, including the surface roughness. This factor may be determined from independent measurements in which the RH along the surface is known while keeping all other variables constant. Then we show that the apparent sorption or desorption kinetics critically depend on the competition between boundary conditions and transport through the material. For sufficiently low air flux intensities or small sample thicknesses, the moisture distribution in the sample remains uniform and evolves toward the equilibrium with a kinetics depending on the value of δ and the material thickness. For sufficiently high air flux intensities or large sample thicknesses, the moisture distribution is highly inhomogeneous, and the kinetics reflect the ability of water transport by diffusion through the material. We illustrate and validate this theoretical description on the basis of magnetic resonance imaging experiments on drying cellulose fiber stacks.
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Affiliation(s)
- Yuliang Zou
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
| | - Luoyi Yan
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
| | - Benjamin Maillet
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
| | - Rahima Sidi-Boulenouar
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
| | - Laurent Brochard
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
| | - Philippe Coussot
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne 77420, France
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Maillet B, Sidi-Boulenouar R, Coussot P. Dynamic NMR Relaxometry as a Simple Tool for Measuring Liquid Transfers and Characterizing Surface and Structure Evolution in Porous Media. Langmuir 2022; 38:15009-15025. [PMID: 36468708 DOI: 10.1021/acs.langmuir.2c01918] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Porous media containing voids which can be filled with gas and/or liquids are ubiquitous in our everyday life: soils, wood, bricks, concrete, sponges, and textiles. It is of major interest to identify how a liquid, pushing another fluid or transporting particles, ions, or nutriments, can penetrate or be extracted from the porous medium. High-resolution X-ray microtomography, neutron imaging, and magnetic resonance imaging are techniques allowing us to obtain, in a nondestructive way, a view of the internal processes in nontransparent porous media. Here we review the possibilities of a simple though powerful technique which provides various direct quantitative information on the liquid distribution inside the porous structure and its variations over time due to fluid transport and/or phase changes. It relies on the analysis of the details of the NMR (nuclear magnetic resonance) relaxation of the proton spins of the liquid molecules and its evolution during some process such as the imbibition, drying, or phase change of the sample. This rather cheap technique then allows us to distinguish how the liquid is distributed in the different pore sizes or pore types and how this evolves over time; since the NMR relaxation time depends on the fraction of time spent by the molecule along the solid surface, this technique can also be used to determine the specific surface of some pore classes in the material. The principles of the technique and its contribution to the physical understanding of the processes are illustrated through examples: imbibition, drying or fluid transfers in a nanoporous silica glass, large pores dispersed in a fine polymeric porous matrix, a pile of cellulose fibers partially saturated with bound water, a softwood, and a simple porous inclusion in a cement paste. We thus show the efficiency of the technique to quantify the transfers with a good temporal resolution.
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Affiliation(s)
- Benjamin Maillet
- Laboratoire Navier (Ecole des Ponts Paris Tech-Université Gustave Eiffel-CNRS), 77420Champs-sur-Marne, France
| | - Rahima Sidi-Boulenouar
- Laboratoire Navier (Ecole des Ponts Paris Tech-Université Gustave Eiffel-CNRS), 77420Champs-sur-Marne, France
| | - Philippe Coussot
- Laboratoire Navier (Ecole des Ponts Paris Tech-Université Gustave Eiffel-CNRS), 77420Champs-sur-Marne, France
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Cocusse M, Rosales M, Maillet B, Sidi-Boulenouar R, Julien E, Caré S, Coussot P. Two-step diffusion in cellular hygroscopic (vascular plant-like) materials. Sci Adv 2022; 8:eabm7830. [PMID: 35559668 PMCID: PMC9106298 DOI: 10.1126/sciadv.abm7830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 03/29/2022] [Indexed: 06/15/2023]
Abstract
Vascular plants, a vast group including conifers, flowering plants, etc., are made of a cellular hygroscopic structure containing water in the form of either free (i.e., in a standard liquid state) or bound (i.e., absorbed in the cell walls) water. From nuclear magnetic resonance techniques, we distinguish the dynamics of bound water and free water in a typical material (softwood) with such a structure, under convective drying. We show that water extraction relies on two mechanisms of diffusion in two contiguous regions of the sample, in which respectively the material still contains free water or only contains bound water. However, in any case, the transport is ensured by bound water. This makes it possible to prolong free water storage despite dry external conditions and shows that it is possible to extract free water in depth (or from large heights) without continuity of the free water network.
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Affiliation(s)
- Marion Cocusse
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
| | - Matteo Rosales
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
| | - Benjamin Maillet
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
| | - Rahima Sidi-Boulenouar
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
| | - Elisa Julien
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
- Experimental Soft Condensed Matter Group, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Sabine Caré
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
| | - Philippe Coussot
- Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France
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Sidi-Boulenouar R, Cardoso M, Coillot C, Rousset S, Nativel E, Charbit A, Baptiste C, Alibert E, Gatineau F, Verdeil JL, Goze-Bac C. Multiscale NMR investigations of two anatomically contrasted genotypes of sorghum under watered conditions and during drought stress. Magn Reson Chem 2019; 57:749-756. [PMID: 31240742 DOI: 10.1002/mrc.4905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
Today, in the presence of global warming, understanding how plants respond to drought stress is essential to meet the challenge of developing new cultivars and new irrigation strategies, consistent with the maintenance of crop productivity. In this context, the study of the relation between plants and water is of central interest for modeling their responses to biotic and abiotic constraints. Paradoxically, there are very few direct and noninvasive methods to quantify and measure the level and the flow of water in plants. The present work aims to develop a noninvasive methodology for living plant based on nuclear magnetic resonance (NMR) at low magnetic field and imaging (MRI) to tackle the issue of water quantity in plants. For this purpose, a portable NMR device measuring the signal level at 8 mT was built. This instrument addresses specific challenges such as miniaturization, accessibility, and overheating in order to maintain the plant intact of time over long period. Time dependence of the water content in sorghum plants is reported under abiotic stress as well as the fraction of transpirable soil water and the photosynthesis activity through the leaves. At high magnetic field (9.4 T), T2 maps were acquired on the same sorghum plants at two time points. The combination of these approaches allows us to identify ecophysiological biomarkers of drought stress. One particular interesting result concerns the spatial distribution of water in two anatomically contrasted sorghum genotypes.
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Affiliation(s)
- Rahima Sidi-Boulenouar
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR AGAP, Montpellier, France
| | - Maïda Cardoso
- BioNanoImaging Foundry, Université de Montpellier, Montpellier, France
| | - Christophe Coillot
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
| | - Sébastien Rousset
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
| | - Eric Nativel
- Institut d'Electronique et des systèmes (IES), UMR5214, Université de Montpellier, CNRS, Montpellier, France
| | - Alain Charbit
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
| | - Christelle Baptiste
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR AGAP, Montpellier, France
| | - Eric Alibert
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
| | - Frédéric Gatineau
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR AGAP, Montpellier, France
| | - Jean-Luc Verdeil
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR AGAP, Montpellier, France
| | - Christophe Goze-Bac
- Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, Montpellier, France
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Ali LMA, Mathlouthi E, Kajdan M, Daurat M, Long J, Sidi-Boulenouar R, Cardoso M, Goze-Bac C, Amdouni N, Guari Y, Larionova J, Gary-Bobo M. Multifunctional manganese-doped Prussian blue nanoparticles for two-photon photothermal therapy and magnetic resonance imaging. Photodiagnosis Photodyn Ther 2018; 22:65-69. [PMID: 29477814 DOI: 10.1016/j.pdpdt.2018.02.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/15/2018] [Accepted: 02/20/2018] [Indexed: 01/12/2023]
Abstract
Here we demonstrate for the first time that Mn2+-doped Prussian blue nanoparticles of c.a. 70 nm act as effective agents for photothermal therapy under two-photon excitation with an almost total eradication of malignant cells (97 and 98%) at a concentration of 100 μg mL-1 24 h after NIR excitation. This effect combined with interesting longitudinal NMR relaxivity values offer new perspectives for effective imaging and cancer treatment.
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Affiliation(s)
- Lamiaa M A Ali
- Institut des Biomolécules Max Mousseron, UMR5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault, 34093, Montpellier, Cedex 05, France
| | - Emna Mathlouthi
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France; Université de Tunis el Manar, Faculté des Sciences, UR/11/ES/19, Physico-Chimie Des Matériaux à l'état Condensé, 2092, Tunis, Tunisie
| | - Marilyn Kajdan
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Morgane Daurat
- Institut des Biomolécules Max Mousseron, UMR5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault, 34093, Montpellier, Cedex 05, France; NanoMedSyn, 15 Avenue Charles Flahault, 34093, Montpellier, France
| | - Jérôme Long
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Rahima Sidi-Boulenouar
- L2C, UMR 5221 CNRS-UM2, Equipe BioNanoNMRI, Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Maïda Cardoso
- L2C, UMR 5221 CNRS-UM2, Equipe BioNanoNMRI, Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Christophe Goze-Bac
- L2C, UMR 5221 CNRS-UM2, Equipe BioNanoNMRI, Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Nourredine Amdouni
- Université de Tunis el Manar, Faculté des Sciences, UR/11/ES/19, Physico-Chimie Des Matériaux à l'état Condensé, 2092, Tunis, Tunisie
| | - Yannick Guari
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France
| | - Joulia Larionova
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, Cedex 5, France.
| | - Magali Gary-Bobo
- Institut des Biomolécules Max Mousseron, UMR5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault, 34093, Montpellier, Cedex 05, France.
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