1
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Rudszuck T, Schork N, Nirschl H, Guthausen G. Nuclear magnetic resonance/magnetic resonance imaging on lubricating greases: Observation of bleeding and aging. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:452-462. [PMID: 34961977 DOI: 10.1002/mrc.5243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/20/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Lubricating greases were investigated by nuclear magnetic resonance/magnetic resonance imaging (NMR/MRI) to get insight into their structure and into their response to mechanical forces, which is related to bleeding and aging. The investigated greases are based on metallic soaps of fatty acids and oils, whereby LiOH is often used. These organic soaps act as thickeners and provide a network in which oils and their additives are embedded. Lubricating greases can thus be considered as a class of substances similar to oleogels or even hydrogels. Questions arise about translational mobility of guest molecules, mainly base oil, in these networks. Molecular structuring and interactions within the network of thickeners are of interest as they are related to macroscopic stability. Apart from NMR spectroscopy (1 H-, 7 Li- and 31 P-NMR), spectrally resolved relaxation and diffusion measurements are used for characterization. In addition, magic angle spinning (MAS)-NMR was combined with 1 H-MRI to investigate the impact of mechanical stress and swelling of lubricating greases.
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Affiliation(s)
- Thomas Rudszuck
- Institute for Mechanical Engineering and Mechanics, KIT, Karlsruhe, Germany
| | - Nicolas Schork
- Institute for Mechanical Engineering and Mechanics, KIT, Karlsruhe, Germany
| | - Hermann Nirschl
- Institute for Mechanical Engineering and Mechanics, KIT, Karlsruhe, Germany
| | - Gisela Guthausen
- Institute for Mechanical Engineering and Mechanics, KIT, Karlsruhe, Germany
- Engler-Bunte Institute, Water Science and Technology, KIT, Karlsruhe, Germany
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2
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3
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Single-molecule localization microscopy as an emerging tool to probe multiscale food structures. FOOD STRUCTURE 2021. [DOI: 10.1016/j.foostr.2021.100236] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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4
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Franconi F, Lemaire L, Gimel JC, Bonnet S, Saulnier P. NMR diffusometry: A new perspective for nanomedicine exploration. J Control Release 2021; 337:155-167. [PMID: 34280413 DOI: 10.1016/j.jconrel.2021.07.025] [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: 02/01/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 12/09/2022]
Abstract
Nuclear Magnetic Resonance (NMR) based diffusion methods open new perspectives for nanomedicine characterization and their bioenvironment interaction understanding. This review summarizes the theoretical background of diffusion phenomena. Self-diffusion and mutual diffusion coefficient notions are featured. Principles, advantages, drawbacks, and key challenges of NMR diffusometry spectroscopic and imaging methods are presented. This review article also gives an overview of representative applicative works to the nanomedicine field that can contribute to elucidate important issues. Examples of in vitro characterizations such as identification of formulated species, process monitoring, drug release follow-up, nanomedicine interactions with biological barriers are presented as well as possible transpositions for studying in vivo nanomedicine fate.
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Affiliation(s)
- Florence Franconi
- Univ Angers, Inserm, CNRS, MINT, SFR ICAT, F-49000 Angers, France; Univ Angers, PRISM, SFR ICAT, F-49000 Angers, France.
| | - Laurent Lemaire
- Univ Angers, Inserm, CNRS, MINT, SFR ICAT, F-49000 Angers, France; Univ Angers, PRISM, SFR ICAT, F-49000 Angers, France.
| | | | - Samuel Bonnet
- Univ Angers, PRISM, SFR ICAT, F-49000 Angers, France.
| | - Patrick Saulnier
- Univ Angers, Inserm, CNRS, MINT, SFR ICAT, F-49000 Angers, France.
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5
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Shimizu Y, Hanasaki I. Partial structural order of gel-forming material detected as multimodal subdiffusion by logarithmic measure. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:455101. [PMID: 34448468 DOI: 10.1088/1361-648x/ac1cb1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
Fibrous nanomaterials suspended in liquid form gel structures when the binding sites between the components reach sufficient number densities. Cellulose nanofibers (CNFs) are one of such nanomaterials, and transparent papers are fabricated by drying their aqueous dispersions. It is therefore important to characterize the wet state, but the specific fluorescent marker molecules are not available for arbitrary CNFs. We report an approach based on the single particle tracking of Brownian probe particles. We focus on the nonuniformity in the Brownian motion to detect the partial structural order between sol and gel, which is nontrivial to characterize. The simple logarithmic measure of diffusive behavior reveals the multimodal nature of Brownian motion depending on the CNF concentration. The subdiffusive behavior by the overall mean squared displacements alone does not tell whether it is caused by confinement in the local environment by CNFs, or binding to single CNFs possibly diffusing in the dispersion. However, the particle-size dependence clarifies that it is not caused by binding but the confinement effect. Furthermore, the logarithmic measure approach enables the detection of overlapping distributions through their heads rather than tails. The detection of partial structural order by rheological non-uniformity of the system with a simple approach will contribute to the further understanding of gel forming materials in general.
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Affiliation(s)
- Yugo Shimizu
- Institute of Engineering, Tokyo University of Agriculture and Technology, Naka-cho 2-24-16, Koganei, Tokyo 184-8588, Japan
| | - Itsuo Hanasaki
- Institute of Engineering, Tokyo University of Agriculture and Technology, Naka-cho 2-24-16, Koganei, Tokyo 184-8588, Japan
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6
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Ojha J, Nanda R, Dorai K. NMR investigation of the thermogelling properties, anomalous diffusion, and structural changes in a Pluronic F127 triblock copolymer in the presence of gold nanoparticles. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04740-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Evaluating the influence of paper characteristics on the efficacy of new poly(vinyl alcohol) based hydrogels for cleaning modern and ancient paper. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Martens KJA, van Duynhoven J, Hohlbein J. Spatiotemporal Heterogeneity of κ-Carrageenan Gels Investigated via Single-Particle-Tracking Fluorescence Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5502-5509. [PMID: 32343144 PMCID: PMC7254830 DOI: 10.1021/acs.langmuir.0c00393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hydrogels made of the polysaccharide κ-carrageenan are widely used in the food and personal care industry as thickeners or gelling agents. These hydrogels feature dense regions embedded in a coarser bulk network, but the characteristic size and behavior of these regions have remained elusive. Here, we use single-particle-tracking fluorescence microscopy (sptFM) to quantitatively describe κ-carrageenan gels. Infusing fluorescent probes into fully gelated κ-carrageenan hydrogels resulted in two distinct diffusional behaviors. Obstructed self-diffusion of the probes revealed that the coarse network consists of κ-carrageenan strands with a typical diameter of 3.2 ± 0.3 nm leading to a nanoprobe diffusion coefficient of ∼1-5 × 10-12 m2/s. In the dense network regions, we found a fraction with a largely decreased diffusion coefficient of ∼1 × 10-13 m2/s. We also observed dynamic exchange between these states. The computation of spatial mobility maps from the diffusional data indicated that the dense network regions have a characteristic diameter of ∼1 μm and show mobility on the second-to-minute timescale. sptFM provides an unprecedented view of spatiotemporal heterogeneity of hydrogel networks, which we believe bears general relevance for understanding transport and release of both low- and high-molecular weight solutes.
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Affiliation(s)
- Koen J. A. Martens
- Laboratory
of Biophysics, Wageningen University and
Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Laboratory
of Bionanotechnology, Wageningen University
and Research, Bornse
Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - John van Duynhoven
- Laboratory
of Biophysics, Wageningen University and
Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Unilever
Global Foods Innovation Centre, Bronland 14, 6708 WH Wageningen, The Netherlands
| | - Johannes Hohlbein
- Laboratory
of Biophysics, Wageningen University and
Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Microspectroscopy
Research Facility, Wageningen University
and Research, Stippeneng
4, 6708 WE Wageningen, The Netherlands
- . Phone: +31 317 482 635
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9
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Mazzuca C, Severini L, Domenici F, Toumia Y, Mazzotta F, Micheli L, Titubante M, Di Napoli B, Paradossi G, Palleschi A. Polyvinyl alcohol based hydrogels as new tunable materials for application in the cultural heritage field. Colloids Surf B Biointerfaces 2020; 188:110777. [PMID: 32004905 DOI: 10.1016/j.colsurfb.2020.110777] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 12/12/2019] [Accepted: 01/04/2020] [Indexed: 10/25/2022]
Abstract
Hydrogel-based cleaning of paper artworks is an increasingly widespread process in the cultural heritage field. However, the search for tuned (compatible, highly retentive and not perishable) hydrogels is a challenging open question. In this paper, a complete characterization of chemical hydrogels based on polyvinyl alcohol (PVA) crosslinked with telechelic PVA and their remarkable performances as gels for cleaning paper artworks are reported. The rheological properties, porosity, water content of these gels were determined and analyzed as a function of the components concentration during synthesis. Due mechanical and retentive properties, the reported gels are optimum candidates for paper cleaning applications. The efficacy of these PVA-based gels has been demonstrated applying them on the surface of the sheets of several paper artworks, and characterizing the samples before and after the cleaning process by means of a multidisciplinary approach involving spectroscopic and chromatographic tests.
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Affiliation(s)
- Claudia Mazzuca
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Leonardo Severini
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Fabio Domenici
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Yosra Toumia
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Francesca Mazzotta
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Laura Micheli
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Mattia Titubante
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Benedetta Di Napoli
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Gaio Paradossi
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Antonio Palleschi
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133 Rome, Italy.
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10
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Condict L, Paramita VD, Kasapis S. Dairy protein–ligand interactions upon thermal processing and targeted delivery for the design of functional foods. Curr Opin Food Sci 2019. [DOI: 10.1016/j.cofs.2019.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Guo X, Theissen S, Claussen J, Hildebrand V, Kamphus J, Wilhelm M, Luy B, Guthausen G. Dynamics of Sodium Ions and Water in Swollen Superabsorbent Hydrogels as Studied by23Na- and1H-NMR. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800350] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoai Guo
- Institute for Chemical Technology and Polymer Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 18 76131 Karlsruhe Germany
| | - Solveig Theissen
- Institute for Mechanical Process Engineering and Mechanics; Engler-Bunte-Institut,; Chair of Water Chemistry and Water Technology; Karlsruhe Institute of Technology; Adenauerring 20b 76131 Karlsruhe Germany
| | - Jan Claussen
- Procter & Gamble Service GmbH; Sulzbacher Strasse 40 65824 Schwalbach am Taunus Germany
| | - Viet Hildebrand
- Procter & Gamble Service GmbH; Sulzbacher Strasse 40 65824 Schwalbach am Taunus Germany
| | - Juliane Kamphus
- Procter & Gamble Service GmbH; Sulzbacher Strasse 40 65824 Schwalbach am Taunus Germany
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 18 76131 Karlsruhe Germany
| | - Burkhard Luy
- Institute of Organic Chemistry and Institute for Biological Interfaces 4; Karlsruhe Institute of Technology; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Gisela Guthausen
- Institute for Mechanical Process Engineering and Mechanics; Engler-Bunte-Institut,; Chair of Water Chemistry and Water Technology; Karlsruhe Institute of Technology; Adenauerring 20b 76131 Karlsruhe Germany
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12
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de Kort DW, Schuster E, Hoeben FJ, Barnes R, Emondts M, Janssen HM, Lorén N, Han S, Van As H, van Duynhoven JP. Heterogeneity of Network Structures and Water Dynamics in κ-Carrageenan Gels Probed by Nanoparticle Diffusometry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11110-11120. [PMID: 30132676 PMCID: PMC6146320 DOI: 10.1021/acs.langmuir.8b01052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A set of functionalized nanoparticles (PEGylated dendrimers, d = 2.8-11 nm) was used to probe the structural heterogeneity in Na+/K+ induced κ-carrageenan gels. The self-diffusion behavior of these nanoparticles as observed by 1H pulsed-field gradient NMR, fluorescence recovery after photobleaching, and raster image correlation spectroscopy revealed a fast and a slow component, pointing toward microstructural heterogeneity in the gel network. The self-diffusion behavior of the faster nanoparticles could be modeled with obstruction by a coarse network (average mesh size <100 nm), while the slower-diffusing nanoparticles are trapped in a dense network (lower mesh size limit of 4.6 nm). Overhauser dynamic nuclear polarization-enhanced NMR relaxometry revealed a reduced local solvent water diffusivity near 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-labeled nanoparticles trapped in the dense network, showing that heterogeneity in the physical network is also reflected in heterogeneous self-diffusivity of water. The observed heterogeneity in mesh sizes and in water self-diffusivity is of interest for understanding and modeling of transport through and release of solutes from heterogeneous biopolymer gels.
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Affiliation(s)
- Daan W. de Kort
- Laboratory
of Biophysics, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- TI-COAST, Science Park
904, 1098 XH Amsterdam, The Netherlands
| | - Erich Schuster
- Product
Design and Perception, RISE Agrifood and
Bioscience, Box 5401, S-402
29 Göteborg, Sweden
- SuMo Biomaterials, VINN Excellence Centre, and Department of
Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Freek J.M. Hoeben
- TI-COAST, Science Park
904, 1098 XH Amsterdam, The Netherlands
- SyMO-Chem
B.V., Het Kraneveld 4, 5612 AZ Eindhoven, The Netherlands
| | - Ryan Barnes
- Department
of Chemistry and Biochemistry, University
of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Meike Emondts
- Department
of Chemistry and Biochemistry, University
of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Henk M. Janssen
- TI-COAST, Science Park
904, 1098 XH Amsterdam, The Netherlands
- SyMO-Chem
B.V., Het Kraneveld 4, 5612 AZ Eindhoven, The Netherlands
| | - Niklas Lorén
- Product
Design and Perception, RISE Agrifood and
Bioscience, Box 5401, S-402
29 Göteborg, Sweden
- SuMo Biomaterials, VINN Excellence Centre, and Department of
Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Songi Han
- Department
of Chemistry and Biochemistry, University
of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Henk Van As
- Laboratory
of Biophysics, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- TI-COAST, Science Park
904, 1098 XH Amsterdam, The Netherlands
| | - John P.M. van Duynhoven
- Laboratory
of Biophysics, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- TI-COAST, Science Park
904, 1098 XH Amsterdam, The Netherlands
- Unilever
R&D, Olivier van
Noortlaan 120, 3133 AT Vlaardingen, The Netherlands
- E-mail:
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13
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Inthavong W, Nicolai T, Chassenieux C. Polymer Probe Diffusion in Globular Protein Gels and Aggregate Suspensions. J Phys Chem B 2018; 122:8075-8081. [DOI: 10.1021/acs.jpcb.8b04963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Walailuk Inthavong
- Le Mans Université, IMMM UMR-CNRS 6283, Polymères, Colloïdes et Interfaces, 72085 Le Mans Cedex 9, France
| | - Taco Nicolai
- Le Mans Université, IMMM UMR-CNRS 6283, Polymères, Colloïdes et Interfaces, 72085 Le Mans Cedex 9, France
| | - Christophe Chassenieux
- Le Mans Université, IMMM UMR-CNRS 6283, Polymères, Colloïdes et Interfaces, 72085 Le Mans Cedex 9, France
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14
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Dogan M, Aslan D, Gurmeric V. The rheological behaviors and morphological characteristics of different food hydrocolloids ground to sub-micro particles: in terms of temperature and particle size. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2017. [DOI: 10.1007/s11694-017-9691-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Jarzębski M, Bellich B, Białopiotrowicz T, Śliwa T, Kościński J, Cesàro A. Particle tracking analysis in food and hydrocolloids investigations. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.09.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Dukovski BJ, Plantić I, Čunčić I, Krtalić I, Juretić M, Pepić I, Lovrić J, Hafner A. Lipid/alginate nanoparticle-loaded in situ gelling system tailored for dexamethasone nasal delivery. Int J Pharm 2017; 533:480-487. [PMID: 28577969 DOI: 10.1016/j.ijpharm.2017.05.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 05/04/2017] [Accepted: 05/27/2017] [Indexed: 01/09/2023]
Abstract
In this study, we suggest the development of nanoparticle loaded in situ gelling system suitable for corticosteroid nasal delivery. We propose lipid/alginate nanoparticles (size 252.3±2.4nm, polydispersity index 0.241, zeta-potential -31.7±1.0mV, dexamethasone (Dex) content 255±7μgml-1) dispersed in pectin solution (5mgml-1) that undergoes a sol-gel phase transition triggered by Ca2+ present in nasal mucosa. The viscoelasticity of gel obtained by mixing nanoparticle suspension in pectin continuous phase with simulated nasal fluid (1:1V/V) is characterised by a log-linear shear thinning viscosity behaviour. Observed viscosity corresponds to the range of viscosities of nasal mucus at physiological as well as under disease conditions. Nanoparticle-loaded gel was biocompatible with the selected epithelial cell model and, in comparison to dexamethasone solution, provided reduction in Dex release (t50% 2.1h and 0.6h, respectively) and moderated transepithelial permeation in vitro (Papp 7.88±0.15 and 9.73±0.57×10-6cms-1, respectively). In conclusion, this study showed the potential of the proposed system to provide local therapeutic effect upon administration of a lower corticosteroid dose and minimize the possibility for adverse effects as it can be easily sprayed as solution and delivered beyond nasal valve, ensure prolonged contact time with nasal mucosa upon gelation, and moderate corticosteroid release and permeation.
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Affiliation(s)
- Bisera Jurišić Dukovski
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Ivana Plantić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Ivan Čunčić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Iva Krtalić
- R&D, PLIVA Croatia Ltd, TEVA Group Member, Zagreb, Croatia
| | - Marina Juretić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Ivan Pepić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Jasmina Lovrić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Anita Hafner
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia.
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17
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Affiliation(s)
- Chia-Chun Lin
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Emmabeth Parrish
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Russell J. Composto
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
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18
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Bhattacharjee S. DLS and zeta potential - What they are and what they are not? J Control Release 2016; 235:337-351. [PMID: 27297779 DOI: 10.1016/j.jconrel.2016.06.017] [Citation(s) in RCA: 1810] [Impact Index Per Article: 226.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/08/2016] [Accepted: 06/09/2016] [Indexed: 02/07/2023]
Abstract
Adequate characterization of NPs (nanoparticles) is of paramount importance to develop well defined nanoformulations of therapeutic relevance. Determination of particle size and surface charge of NPs are indispensable for proper characterization of NPs. DLS (dynamic light scattering) and ZP (zeta potential) measurements have gained popularity as simple, easy and reproducible tools to ascertain particle size and surface charge. Unfortunately, on practical grounds plenty of challenges exist regarding these two techniques including inadequate understanding of the operating principles and dealing with critical issues like sample preparation and interpretation of the data. As both DLS and ZP have emerged from the realms of physical colloid chemistry - it is difficult for researchers engaged in nanomedicine research to master these two techniques. Additionally, there is little literature available in drug delivery research which offers a simple, concise account on these techniques. This review tries to address this issue while providing the fundamental principles of these techniques, summarizing the core mathematical principles and offering practical guidelines on tackling commonly encountered problems while running DLS and ZP measurements. Finally, the review tries to analyze the relevance of these two techniques from translatory perspective.
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Affiliation(s)
- Sourav Bhattacharjee
- School of Veterinary Medicine, University College Dublin (UCD), Belfield, Dublin 4, Ireland.
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19
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de Kort DW, Veen SJ, Van As H, Bonn D, Velikov KP, van Duynhoven JPM. Yielding and flow of cellulose microfibril dispersions in the presence of a charged polymer. SOFT MATTER 2016; 12:4739-4744. [PMID: 27120969 DOI: 10.1039/c5sm02869h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The shear flow of microfibrillated cellulose dispersions is still not wholly understood as a consequence of their multi-length-scale heterogeneity. We added carboxymethyl cellulose, a charged polymer, that makes cellulose microfibril dispersions more homogeneous at the submicron and macro scales. We then compared the yielding and flow behavior of these dispersions to that of typical thixotropic yield-stress fluids. Despite the apparent homogeneity of the dispersions, their flow velocity profiles in cone-plate geometry, as measured by rheo-MRI velocimetry, differ strongly from those observed for typical thixotropic model systems: the viscosity across the gap is not uniform, despite a flat stress field across the gap. We describe these velocity profiles with a nonlocal model, and attribute the non-locality to persistent micron-scale structural heterogeneity.
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Affiliation(s)
- Daan W de Kort
- Laboratory of Biophysics, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands. and TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Sandra J Veen
- Unilever R&D, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands
| | - Henk Van As
- Laboratory of Biophysics, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands. and TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Daniel Bonn
- Van der Waals-Zeeman Institute, IoP, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Krassimir P Velikov
- Unilever R&D, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands and Soft Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - John P M van Duynhoven
- Laboratory of Biophysics, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands. and TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands and Unilever R&D, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands
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Bourouina N, de Kort DW, Hoeben FJM, Janssen HM, Van As H, Hohlbein J, van Duynhoven JPM, Kleijn JM. Complex Coacervate Core Micelles with Spectroscopic Labels for Diffusometric Probing of Biopolymer Networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12635-43. [PMID: 26535962 DOI: 10.1021/acs.langmuir.5b03496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We present the design, preparation, and characterization of two types of complex coacervate core micelles (C3Ms) with cross-linked cores and spectroscopic labels and demonstrate their use as diffusional probes to investigate the microstructure of percolating biopolymer networks. The first type consists of poly(allylamine hydrochloride) (PAH) and poly(ethylene oxide)-poly(methacrylic acid) (PEO-b-PMAA), labeled with ATTO 488 fluorescent dyes. We show that the size of these probes can be tuned by choosing the length of the PEO-PMAA chains. ATTO 488-labeled PEO113-PMAA15 micelles are very bright with 18 dye molecules incorporated into their cores. The second type is a (19)F-labeled micelle, for which we used PAH and a (19)F-labeled diblock copolymer tailor-made from poly(ethylene oxide)-poly(acrylic acid) (mPEO79-b-PAA14). These micelles contain approximately 4 wt % of (19)F and can be detected by (19)F NMR. The (19)F labels are placed at the end of a small spacer to allow for the necessary rotational mobility. We used these ATTO- and (19)F-labeled micelles to probe the microstructures of a transient gel (xanthan gum) and a cross-linked, heterogeneous gel (κ-carrageenan). For the transient gel, sensitive optical diffusometry methods, including fluorescence correlation spectroscopy, fluorescence recovery after photobleaching, and super-resolution single nanoparticle tracking, allowed us to measure the diffusion coefficient in networks with increasing density. From these measurements, we determined the diameters of the constituent xanthan fibers. In the heterogeneous κ-carrageenan gels, bimodal nanoparticle diffusion was observed, which is a signpost of microstructural heterogeneity of the network.
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Affiliation(s)
- Nadia Bourouina
- Physical Chemistry and Soft Matter, Wageningen University , P.O. Box 8038, 6700 EK Wageningen, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Daan W de Kort
- Laboratory of Biophysics, Wageningen University , P.O. Box 8128, 6700 ET Wageningen, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Freek J M Hoeben
- SyMO-Chem B.V., Het Kraneveld 4, 5612 AZ Eindhoven, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Henk M Janssen
- SyMO-Chem B.V., Het Kraneveld 4, 5612 AZ Eindhoven, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Henk Van As
- Laboratory of Biophysics, Wageningen University , P.O. Box 8128, 6700 ET Wageningen, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Johannes Hohlbein
- Laboratory of Biophysics, Wageningen University , P.O. Box 8128, 6700 ET Wageningen, The Netherlands
| | - John P M van Duynhoven
- Laboratory of Biophysics, Wageningen University , P.O. Box 8128, 6700 ET Wageningen, The Netherlands
- Unilever R&D, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - J Mieke Kleijn
- Physical Chemistry and Soft Matter, Wageningen University , P.O. Box 8038, 6700 EK Wageningen, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Einhorn-Stoll U, Drusch S. Methods for investigation of diffusion processes and biopolymer physics in food gels. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2015.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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