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Khadem B, Parrott A, Nordon A, Sheibat‐Othman N. Low‐Field High‐Resolution PFG‐NMR to Predict the Size Distribution of Inner Droplets in Double Emulsions. EUR J LIPID SCI TECH 2020. [DOI: 10.1002/ejlt.202000193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Behnam Khadem
- Univ Lyon CNRS Université Claude Bernard Lyon 1 LAGEPP UMR 5007 Villeurbanne F‐69100 France
| | - Andrew Parrott
- WestCHEM Department of Pure and Applied Chemistry and Centre for Process Analytics and Control Technology University of Strathclyde Glasgow G1 1XL UK
| | - Alison Nordon
- WestCHEM Department of Pure and Applied Chemistry and Centre for Process Analytics and Control Technology University of Strathclyde Glasgow G1 1XL UK
| | - Nida Sheibat‐Othman
- Univ Lyon CNRS Université Claude Bernard Lyon 1 LAGEPP UMR 5007 Villeurbanne F‐69100 France
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2
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Khadem B, Khellaf M, Sheibat-Othman N. Investigating swelling-breakdown in double emulsions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124181] [Citation(s) in RCA: 5] [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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3
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Hale W, Rossetto G, Greenhalgh R, Finch G, Utz M. High-resolution nuclear magnetic resonance spectroscopy in microfluidic droplets. LAB ON A CHIP 2018; 18:3018-3024. [PMID: 30131995 DOI: 10.1039/c8lc00712h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A generic approach is presented that allows high-resolution NMR spectroscopy of water/oil droplet emulsions in microfluidic devices. Microfluidic NMR spectroscopy has recently made significant advances due to the design of micro-detector systems and their successful integration with microfluidic devices. Obtaining NMR spectra of droplet suspensions, however, is complicated by the inevitable differences in magnetic susceptibility between the chip material, the continuous phase, and the droplet phases. This leads to broadening of the NMR resonance lines and results in loss of spectral resolution. We have mitigated the susceptibility difference between the continuous (oil) phase and the chip material by incorporating appropriately designed air-filled structures into the chip. The susceptibilities of the continuous and droplet (aqueous) phases have been matched by doping the droplet phase with a Eu3+ complex. Our results demonstrate that this leads to a proton line width in the droplet phase of about 3 Hz, enabling high-resolution NMR techniques.
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Affiliation(s)
- William Hale
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
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4
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Kim YL, Mun S, Rho SJ, Do HV, Kim YR. “Influence of physicochemical properties of enzymatically modified starch gel on the encapsulation efficiency of W/O/W emulsion containing NaCl”. FOOD BIOPROCESS TECH 2016. [DOI: 10.1007/s11947-016-1799-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Effect of molecular exchange on water droplet size analysis as determined by diffusion NMR: The W/O/W double emulsion case. J Colloid Interface Sci 2016; 475:57-65. [DOI: 10.1016/j.jcis.2016.04.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 11/23/2022]
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6
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Vermeir L, Sabatino P, Balcaen M, Declerck A, Dewettinck K, Martins JC, Van der Meeren P. Effect of molecular exchange on water droplet size analysis in W/O emulsions as determined by diffusion NMR. J Colloid Interface Sci 2016; 463:128-36. [DOI: 10.1016/j.jcis.2015.10.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/08/2015] [Accepted: 10/09/2015] [Indexed: 11/24/2022]
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7
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Kawaguchi T, Kita R, Shinyashiki N, Yagihara S, Fukuzaki M. The Bi-modality Diffusion of Water Molecules in Liposome/Water Dispersion Systems Analyzed by Pulsed Field Gradient Spin Echo NMR Method. ACTA ACUST UNITED AC 2016. [DOI: 10.14723/tmrsj.41.359] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Kawaguchi
- Graduate School of Science and Technology, Tokai University
| | - R. Kita
- Graduate School of Science and Technology, Tokai University
| | - N. Shinyashiki
- Graduate School of Science and Technology, Tokai University
| | - S. Yagihara
- Graduate School of Science and Technology, Tokai University
| | - M. Fukuzaki
- School of Information and Telecommunication Engineering, Tokai University
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8
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Pochert A, Schneider D, Haase J, Linden M, Valiullin R. Diffusion and Molecular Exchange in Hollow Core-Shell Silica Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10285-10295. [PMID: 26327167 DOI: 10.1021/acs.langmuir.5b02367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The diffusion behavior of small molecules in hollow core-shell nanocapsules was studied using pulsed field gradient NMR. By purposefully selecting the liquid saturating the hollow core and the porous shell and the solvent between the nanocapsules, two different situations corresponding to the excluded and admitted molecular exchange between the intra- and intercapsule liquids at the external boundary of the nanoparticles were covered. In the former case, corresponding to the reflective boundary condition for the molecules approaching the nanocapsule boundary, restricted diffusion in the complex pore space formed by the hollow core and the mesoporous shell was observed. The time-dependent diffusivities measured in the experiment were inter-related with the geometry of the intraparticle pore space. The thus assessed structural information was found to be in a good agreement with that provided by electron microscopy. In the case of the molecular exchange occurring between the two pools of molecules in the nanocapsules and between them, the diffusive dynamics of only the molecules remaining in the nanocapsules during the entire observation times was studied.
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Affiliation(s)
- A Pochert
- Institute of Inorganic Chemistry 2, University of Ulm , Ulm, 89081, Germany
| | | | | | - M Linden
- Institute of Inorganic Chemistry 2, University of Ulm , Ulm, 89081, Germany
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9
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Investigation and application of measurement techniques for the determination of the encapsulation efficiency of O/W/O multiple emulsions stabilized by hydrocolloid gelation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Stability and rheology of W/Si/W multiple emulsions with polydimethylsiloxane. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Patel AR, Dumlu P, Vermeir L, Lewille B, Lesaffer A, Dewettinck K. Rheological characterization of gel-in-oil-in-gel type structured emulsions. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.12.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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Vermeir L, Balcaen M, Van der Meeren P, Dewettinck K. Influence of the NMR receiver gain on the enclosed water volume fraction of W/O/W double emulsions as determined by low-resolution NMR diffusometry and T2 relaxometry. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:309-313. [PMID: 25641404 DOI: 10.1002/mrc.4202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 11/19/2014] [Accepted: 12/04/2014] [Indexed: 06/04/2023]
Affiliation(s)
- Lien Vermeir
- Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, Ghent, 9000, East Flanders, Belgium
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13
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In vivo measurement of the size of oil bodies in plant seeds using a simple and robust pulsed field gradient NMR method. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 44:121-9. [DOI: 10.1007/s00249-015-1007-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 12/18/2014] [Accepted: 01/13/2015] [Indexed: 11/29/2022]
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14
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Hoppel M, Reznicek G, Kählig H, Kotisch H, Resch GP, Valenta C. Topical delivery of acetyl hexapeptide-8 from different emulsions: Influence of emulsion composition and internal structure. Eur J Pharm Sci 2015; 68:27-35. [DOI: 10.1016/j.ejps.2014.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 11/19/2014] [Accepted: 12/02/2014] [Indexed: 10/24/2022]
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15
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Structure of and diffusion in O/W/O double emulsions by CLSM and NMR–comparison with W/O/W. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Vermeir L, Balcaen M, Sabatino P, Dewettinck K, Van der Meeren P. Influence of molecular exchange on the enclosed water volume fraction of W/O/W double emulsions as determined by low-resolution NMR diffusometry and T2-relaxometry. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Cai W, Yang H, Han D, Guo X. A physical route to porous ethyl cellulose microspheres loaded with TiO 2nanoparticles. J Appl Polym Sci 2014. [DOI: 10.1002/app.40822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weiwei Cai
- Department of Materials Science and Engineering of Zhejiang University; 38 Zheda Road Xihu District Hangzhou 310027 People's Republic of China
| | - Hui Yang
- Department of Materials Science and Engineering of Zhejiang University; 38 Zheda Road Xihu District Hangzhou 310027 People's Republic of China
| | - Daxin Han
- Department of Materials Science and Engineering of Zhejiang University; 38 Zheda Road Xihu District Hangzhou 310027 People's Republic of China
| | - Xingzhong Guo
- Department of Materials Science and Engineering of Zhejiang University; 38 Zheda Road Xihu District Hangzhou 310027 People's Republic of China
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Vermeir L, Sabatino P, Balcaen M, Van Ranst G, Van der Meeren P. Evaluation of the effect of homogenization energy input on the enclosed water volume of concentrated W/O/W emulsions by low-resolution T2-relaxometry. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.01.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Hughes E, Maan AA, Acquistapace S, Burbidge A, Johns ML, Gunes DZ, Clausen P, Syrbe A, Hugo J, Schroen K, Miralles V, Atkins T, Gray R, Homewood P, Zick K. Microfluidic preparation and self diffusion PFG-NMR analysis of monodisperse water-in-oil-in-water double emulsions. J Colloid Interface Sci 2013; 389:147-56. [DOI: 10.1016/j.jcis.2012.07.073] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Revised: 07/01/2012] [Accepted: 07/02/2012] [Indexed: 10/28/2022]
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20
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Schuster S, Bernewitz R, Guthausen G, Zapp J, Greiner AM, Köhler K, Schuchmann HP. Analysis of W1/O/W2 double emulsions with CLSM: Statistical image processing for droplet size distribution. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.06.059] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Lopez-Heredia MA, Sariibrahimoglu K, Yang W, Bohner M, Yamashita D, Kunstar A, van Apeldoorn AA, Bronkhorst EM, Félix Lanao RP, Leeuwenburgh SC, Itatani K, Yang F, Salmon P, Wolke JG, Jansen JA. Influence of the pore generator on the evolution of the mechanical properties and the porosity and interconnectivity of a calcium phosphate cement. Acta Biomater 2012; 8:404-14. [PMID: 21884833 DOI: 10.1016/j.actbio.2011.08.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 07/09/2011] [Accepted: 08/11/2011] [Indexed: 12/25/2022]
Abstract
Porosity and interconnectivity are important properties of calcium phosphate cements (CPCs) and bone-replacement materials. Porosity of CPCs can be achieved by adding polymeric biodegradable pore-generating particles (porogens), which can add porosity to the CPC and can also be used as a drug-delivery system. Porosity affects the mechanical properties of CPCs, and hence is of relevance for clinical application of these cements. The current study focused on the effect of combinations of polymeric mesoporous porogens on the properties of a CPC, such as specific surface area, porosity and interconnectivity and the development of mechanical properties. CPC powder was mixed with different amounts of PLGA porogens of various molecular weights and porogen sizes. The major factors affecting the properties of the CPC were related to the amount of porogen loaded and the porogen size; the molecular weight did not show a significant effect per se. A minimal porogen size of 40 μm in 30 wt.% seems to produce a CPC with mechanical properties, porosity and interconnectivity suitable for clinical applications. The properties studied here, and induced by the porogen and CPC, can be used as a guide to evoke a specific host-response to maintain CPC integrity and to generate an explicit bone ingrowth.
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Bernewitz R, Guthausen G, Schuchmann HP. NMR on emulsions: characterisation of liquid dispersed systems. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49 Suppl 1:S93-S104. [PMID: 22290715 DOI: 10.1002/mrc.2825] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Pulsed field gradient NMR (PFG-NMR) is an important method for the characterisation of emulsions. Apart from its application in quality control and process development, especially high-field NMR methods can be applied to investigate emulsions properties on the molecular level. Meanwhile, complex emulsion structures such as double emulsions have been developed and require analytical tools especially for the determination of droplet size distributions. This contribution provides an overview on the possibilities and methods of PFG-NMR referring to measurement, data processing and interpretation of droplet size distributions. Comparison of techniques and measurements on double emulsions are presented.
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Affiliation(s)
- R Bernewitz
- SRG10-2, Institute for Mechanical Engineering and Mechanics, KIT, 76131 Karlsruhe, Germany
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23
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Guan X, Hailu K, Guthausen G, Wolf F, Bernewitz R, Schuchmann HP. PFG-NMR on W1/O/W2-emulsions: Evidence for molecular exchange between water phases. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.201000022] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Romoscanu AI, Fenollosa A, Acquistapace S, Gunes D, Martins-Deuchande T, Clausen P, Mezzenga R, Nydén M, Zick K, Hughes E. Structure, diffusion, and permeability of protein-stabilized monodispersed oil in water emulsions and their gels: a self-diffusion NMR study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6184-6192. [PMID: 20369894 DOI: 10.1021/la100774q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Self-diffusion NMR is used to investigate monodispersed oil in water emulsions and the subsequent gel formed by removing the water through evaporation. The radius of the oil droplets in the emulsions is measured using a number of diffusion methods based on the measurement of the mean squared displacement of the oil, water, and tracer molecules. The results are consistent with the known size of the emulsions. Bragg-like reflections due to the restricted diffusion of the water around the oil droplets are observed due to the low polydispersity of the emulsions and the dense packing. The resulting data are fitted to a pore glass model to give the diameter of both the pools of interstitial water and the oil droplets. In the gel, information on the residual three-dimensional structure is obtained using the short time behavior of the effective diffusion coefficient to give the surface to volume ratio of the residual protein network structure. The values for the surface to volume ratio are found to be consistent with the expected increase of the surface area of monodisperse droplets forming a gel network. At long diffusion observation times, the permeability of the network structure is investigated by diffusion NMR to give a complete picture of the colloidal system considered.
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Wolf F, Hecht L, Schuchmann HP, Hardy EH, Guthausen G. Preparation of W1/O/W2emulsions and droplet size distribution measurements by pulsed-field gradient nuclear magnetic resonance (PFG-NMR) technique. EUR J LIPID SCI TECH 2009. [DOI: 10.1002/ejlt.200800272] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wang H, Wang M, Ge X. One-step fabrication of multihollow polystyrene particles from miniemulsion system with nonionic surfactant. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.09.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Krutyeva M, Kärger J. NMR diffusometry with beds of nanoporous host particles: an assessment of mass transfer in compartmented two-phase systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:10474-10479. [PMID: 18710267 DOI: 10.1021/la801426f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Molecular diffusion in a bed of zeolite crystallites is mimicked by dynamic Monte Carlo simulation of a particle hopping on a two-dimensional square lattice. The resulting probability distribution of molecular propagation (the "mean propagator") is used for a rigorous determination of the resulting dependencies of diffusion measurement by pulsed field gradient NMR. In the limiting cases of intracrystalline, restricted, and long-range diffusion, these dependencies are found to coincide with the well-known relations resulting from the application of a simplifying exchange model (the "two-region" approximation). The intensity of transport resistances on the boundary between the intra- and intercrystalline spaces, i.e., on the compartment boundaries, is only accessible in the intermediate case, i.e., for observation times comparable with the mean lifetimes within the different compartments. In this case, significant differences between the results of the rigorous treatment and the "two-region" approximation may occur.
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Affiliation(s)
- Margarita Krutyeva
- University of Leipzig, Department of Interface Physics, Linnéstrasse 5, Leipzig, Germany
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Thompson AK, Hindmarsh JP, Haisman D, Rades T, Singh H. Comparison of the structure and properties of liposomes prepared from milk fat globule membrane and soy phospholipids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:3704-11. [PMID: 19127748 DOI: 10.1021/jf052859b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Liposomes were prepared from a milk fat globule membrane (MFGM) phospholipid fraction and from soy phospholipid material using a high-pressure homogenizer (Microfluidizer). The liposomes were characterized in terms of general structure, phase transition temperature, lamellarity, bilayer thickness, and membrane permeability. The liposomes prepared from the MFGM fraction had a significantly higher phase transition temperature, thicker membrane, and lower membrane permeability. These differences were attributed to different phospholipid compositions of the MFGM and soy phospholipid fractions.
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Affiliation(s)
- Abby K Thompson
- Riddet Centre, Massey University, Palmerston North, New Zealand
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