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Yang Y, Wan J, Shang X, Sun S. Molecular insights into fluid-solid interfacial tensions in water + gas + solid systems at various temperatures and pressures. J Chem Phys 2023; 159:094701. [PMID: 37655769 DOI: 10.1063/5.0157957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/15/2023] [Indexed: 09/02/2023] Open
Abstract
The fluid-solid interfacial tension is of great importance to many applications including the geological storage of greenhouse gases and enhancing the recovery of geo-resources, but it is rarely studied. Extensive molecular dynamics simulations are conducted to calculate fluid-solid interfacial properties in H2O + gas (H2, N2, CH4, and CO2) + rigid solid three-phase systems at various temperatures (298-403 K), pressures (0-100 MPa), and wettabilities (hydrophilic, neutral, and hydrophobic). Our results on the H2O + solid system show that vapor-solid interfacial tension should not be ignored in cases where the fluid-solid interaction energy is strong or the contact angle is close to 90°. As the temperature rises, the magnitude of H2O's liquid-solid interfacial tension declines because the oscillation of the interfacial density/pressure profile weakens at high temperatures. However, the magnitude of H2O vapor-solid interfacial tension is enhanced with temperature due to the stronger adsorption of H2O. Moreover, the H2O-solid interfacial tension in H2O + gas (H2 or N2) + solid systems is weakly dependent on pressure, while the pressure effects on H2O-solid interfacial tensions in systems with CH4 or CO2 are significant. We show that the assumption of pressure independent H2O-solid interfacial tensions should be cautiously applied to Neumann's method for systems containing non-hydrophilic surfaces with strong gas-solid interaction. Meanwhile, the magnitude of gas-solid interfacial tension increases with pressure and gas-solid interaction. High temperatures generally decrease the magnitude of gas-solid interfacial tensions. Further, we found that the increment of contact angle due to the presence of gases follows this order: H2 < N2 < CH4 < CO2.
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Affiliation(s)
- Yafan Yang
- State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
- Computational Transport Phenomena Laboratory, Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jingyu Wan
- State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Xiangyu Shang
- State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Shuyu Sun
- Computational Transport Phenomena Laboratory, Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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2
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Rathod S. Interpenetrating polymeric network (IPNs) in ophthalmic drug delivery: Breaking the barriers. Int Ophthalmol 2022; 43:1063-1074. [PMID: 36053474 DOI: 10.1007/s10792-022-02482-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 08/20/2022] [Indexed: 10/14/2022]
Abstract
To maintain the therapeutic drug concentration for a prolonged period of time in aqueous and vitreous humor is primary challenge for ophthalmic drug delivery. Majority of the locally administered drug into the eye is lost as to natural reflexes like blinking and lacrimation resulting in the short span of drug residence. Consequently, less than 5% of the applied drug penetrate through the cornea and reaches the intraocular tissues. The major targets for optimal ophthalmic drug delivery are increasing drug residence time in cul-de-sac of the eye, prolonging intraocular exposure, modulating drug release from the delivery system, and minimizing pre-corneal drug loss. Development of in situ gel, contact lens, intraocular lens, inserts, artificial cornea, scaffold, etc., for ophthalmic drug delivery are few approaches to achieve these major targeted objectives for delivering the drug optimally. Interpenetrating polymeric network (IPN) or smart hydrogels or stimuli sensitive hydrogels are the class of polymers that can help to achieve the targets in ophthalmic drug delivery due to their versatility, biocompatibility and biodegradability. These novel ''smart" materials can alter their molecular configuration and result in volume phase transition in response to environmental stimuli, such as temperature, pH, ionic strength, electric and magnetic field. Hydrogel and tissue interaction, mechanical/tensile properties, pore size and surface chemistry of IPNs can also be modulated for tuning the drug release kinetics. Stimuli sensitive IPNs has been widely exploited to prepare in situ gelling formulations for ophthalmic drug delivery. Low refractive index hydrogel biomaterials with high water content, soft tissue-like physical properties, wettability, oxygen, glucose permeability and desired biocompatibility makes IPNs versatile candidate for contact lenses and corneal implants. This review article focuses on the exploration of these smart polymeric networks/IPNs for therapeutically improved ophthalmic drug delivery that has unfastened novel arenas in ophthalmic drug delivery.
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Affiliation(s)
- Sachin Rathod
- Maliba Pharmacy College, UKA Tarsadia University, Gopal-Vidyanagar Campus, Surat, 394350, India. .,Parul Institute of Pharmacy and Research, Parul University, Waghodia, Vadodara, 391760, India.
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3
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Orselly M, Devémy J, Bouvet-Marchand A, Dequidt A, Loubat C, Malfreyt P. Molecular interactions at the metal-liquid interfaces. J Chem Phys 2022; 156:234705. [PMID: 35732516 DOI: 10.1063/5.0095872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We reported molecular simulations of the interactions among water, an epoxy prepolymer diglycidic ether of bisphenol A (DGEBA), and a hardener isophorone diamine (IPDA) on an aluminum surface. This work proposes a comprehensive thermodynamic characterization of the adhesion process from the calculation of different interfacial tensions. The cross-interactions between the atoms of the metal surface and different molecules are adjusted so as to reproduce the experimental work of adhesion. Water nanodroplets on the metal surface are then simulated to predict their contact angle. Liquid-vapor surface tensions of the epoxy prepolymer (DGEBA) and hardener (IPDA) and the solid-vapor surface tension of the aluminum surface are also calculated to provide the solid-liquid interfacial tension that remains very difficult to obtain from the mechanical definition.
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Affiliation(s)
- Mathilde Orselly
- Specific Polymers, 150 Avenue des Cocardières, 34160 Castries, France
| | - Julien Devémy
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | | | - Alain Dequidt
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Cédric Loubat
- Specific Polymers, 150 Avenue des Cocardières, 34160 Castries, France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
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4
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Ghoufi A, Malfreyt P. Interfacial tension of the graphene–water solid–liquid interface: how to handle the electrostatic interactions? Mol Phys 2021. [DOI: 10.1080/00268976.2021.1948121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Aziz Ghoufi
- Institut de Physique de Rennes (IPR) – UMR 6251, Université Rennes, CNRS, Rennes, France
| | - Patrice Malfreyt
- Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, Clermont-Ferrand, France
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5
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Wu T, Firoozabadi A. Calculation of Solid-Fluid Interfacial Free Energy with Consideration of Solid Deformation by Molecular Dynamics Simulations. J Phys Chem A 2021; 125:5841-5848. [PMID: 34180665 DOI: 10.1021/acs.jpca.1c00735] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fluid-fluid interfacial free energy can be measured accurately and can also be calculated from molecular simulations. However, it is challenging to measure solid-fluid interfacial free energy directly. Accurate computation has not yet been advanced by molecular simulations. In this study, we derive working expressions for estimating solid-fluid interfacial free energy based on the free-energy perturbation method with consideration of solid deformation. A Lennard-Jones solid-fluid system is simulated. Our derivations indicate that the effect of solid deformation is pronounced on solid-fluid interfacial free energy, and the results may be significantly different from the conventional test area method. Our results reveal that the contribution of the solid deformation highly depends on the stress conditions in the solid, which can be either positive or negative. Adsorption of fluids onto the solid surface has a significant effect on interfacial free energy. In weak adsorption, the interfacial free energy is close to the solid-vacuum surface free energy. Strong adsorption results in a significant reduction in interfacial free energy.
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Affiliation(s)
- Tianhao Wu
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 70057, United States.,Reservoir Engineering Research Institute, Palo Alto, California 94301, United States
| | - Abbas Firoozabadi
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 70057, United States.,Reservoir Engineering Research Institute, Palo Alto, California 94301, United States
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Goujon F, Ghoufi A, Malfreyt P. Associated molecular liquids at the graphene monolayer interface. J Chem Phys 2021; 154:104504. [PMID: 33722040 DOI: 10.1063/5.0042438] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
We report molecular simulations of the interaction between a graphene sheet and different liquids such as water, ethanol, and ethylene glycol. We describe the structural arrangements at the graphene interface in terms of density profiles, number of hydrogen bonds (HBs), and local structuration in neighboring layers close to the surface. We establish the formation of a two-dimensional HB network in the layer closest to the graphene. We also calculate the interfacial tension of liquids with a graphene monolayer and its profile along the direction normal to the graphene to rationalize and quantify the strengthening of the intermolecular interactions in the liquid due to the presence of the surface.
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Affiliation(s)
- Florent Goujon
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), F-63000 Clermont-Ferrand, France
| | - Aziz Ghoufi
- Université de Rennes, CNRS, IPR (Institut de Physique de Rennes), UMR 6251, F-35000 Rennes, France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), F-63000 Clermont-Ferrand, France
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7
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Ghoufi A, Szymczyk A. Computational Assessment of Water Desalination Performance of Multi‐Walled Carbon Nanotubes. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.201900254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Aziz Ghoufi
- Institut de Physique de RennesIPRCNRS‐Université de Rennes 1UMR CNRS 6251 35042 Rennes France
| | - Anthony Szymczyk
- Univ RennesCNRSInstitut des Sciences Chimiques de RennesUMR 6226 F‐35000 Rennes France
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8
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Dhattarwal HS, Kashyap HK. Molecular dynamics investigation of wetting-dewetting behavior of model carbon material by 1-butyl-3-methylimidazolium acetate ionic liquid nanodroplet. J Chem Phys 2019; 151:244705. [DOI: 10.1063/1.5131851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Harender S. Dhattarwal
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemant K. Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Dreher T, Lemarchand C, Pineau N, Bourasseau E, Ghoufi A, Malfreyt P. Calculation of the interfacial tension of the graphene-water interaction by molecular simulations. J Chem Phys 2019; 150:014703. [PMID: 30621407 DOI: 10.1063/1.5048576] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
We report the calculation of the solid-liquid interface tension of the graphene-water interaction by using molecular simulations. Local profiles of the interfacial tension are given through the mechanical and thermodynamic definitions. The dependence of the interfacial tension on the graphene area is investigated by applying both reaction field and Ewald summation techniques. The structure of the interfacial region close to the graphene sheet is analyzed through the profiles of the density and hydrogen bond number and the orientation of the water molecules. We complete this study by plotting the profiles of the components of the pressure tensor calculated by the Ewald summation and reaction field methods. We also investigate the case of a reaction field version consisting in applying a damped shifted force in the case of the calculation of the pressure components.
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Affiliation(s)
| | | | | | | | - Aziz Ghoufi
- Université de Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, F-35000 Rennes, France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), F-63000 Clermont-Ferrand, France
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10
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Goujon F, Dequidt A, Ghoufi A, Malfreyt P. How Does the Surface Tension Depend on the Surface Area with Coarse-Grained Models? J Chem Theory Comput 2018; 14:2644-2651. [DOI: 10.1021/acs.jctc.8b00158] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Florent Goujon
- Université
Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand
(ICCF), F-63000 Clermont-Ferrand, France
| | - Alain Dequidt
- Université
Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand
(ICCF), F-63000 Clermont-Ferrand, France
| | - Aziz Ghoufi
- Institut de Physique de Rennes, Université Rennes 1, 35042 Rennes, France
| | - Patrice Malfreyt
- Université
Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand
(ICCF), F-63000 Clermont-Ferrand, France
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11
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Dreher T, Lemarchand C, Soulard L, Bourasseau E, Malfreyt P, Pineau N. Calculation of a solid/liquid surface tension: A methodological study. J Chem Phys 2018; 148:034702. [DOI: 10.1063/1.5008473] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Dreher
- CEA, DAM, DIF, 91297 Arpajon Cedex, France
- Université Clermont Auvergne, CNRS, ICCF, Sigma Clermont, F-63000 Clermont-Ferrand, France
| | | | - L. Soulard
- CEA, DAM, DIF, 91297 Arpajon Cedex, France
| | - E. Bourasseau
- CEA, DEN, DEC, F-13108 Saint-Paul-lez-Durance, France
| | - P. Malfreyt
- Université Clermont Auvergne, CNRS, ICCF, Sigma Clermont, F-63000 Clermont-Ferrand, France
| | - N. Pineau
- CEA, DAM, DIF, 91297 Arpajon Cedex, France
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