101
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More P, Sangitra SN, Bohidar HB, Pujala RK. Rheology and microstructure of thermoresponsive composite gels of hematite pseudocubes and Pluronic F127. J Chem Phys 2022; 157:214902. [PMID: 36511547 DOI: 10.1063/5.0109525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Stimuli-responsive materials or smart materials are designed materials whose properties can be changed significantly by applying external stimuli, such as stress, electric or magnetic fields, light, temperature, and pH. We report the linear and nonlinear rheological properties of thermoresponsive composite gels based on submicron-sized hematite pseudocube-shaped particles and a triblock copolymer Pluronic F127 (PF127). These novel composites form hard gels at an elevated temperature of 37 °C. For certain concentrations (<20 w/v. %) of hematite pseudocubes in 17.5 w/v. % of PF127, the gel strength is enhanced and the brittleness of the gels decreases. Higher concentrations (>20 w/v. %) of hematite pseudocubes in PF127 result in weaker and fragile gels. We develop an extensive rheological fingerprint using linear and nonlinear rheological studies. Adsorption of PF127 copolymer molecules on the hematite cube surfaces would further assist the formation of particle clusters along with magnetic interactions to be held effectively in the PF127 micellar network at elevated temperatures. The microscopic structure of these composite gels is visualized through a confocal microscope. Our experiments show that addition of hematite cubes up to 20 w/v. % does not change the rapid thermal gelation of PF127 solutions; hence, the hematite-PF127 composite, which transforms into a hard gel near human body temperature of 37 °C, could be suitable for use in smart drug delivery systems.
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Affiliation(s)
- Prasanna More
- Soft and Active Matter Group, Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, Andhra Pradesh 517507, India
| | - Surya Narayana Sangitra
- Soft and Active Matter Group, Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, Andhra Pradesh 517507, India
| | - H B Bohidar
- National Center for Excellence in Nanobiotechnology, TERI-Deakin Nanobiotechnology Center, Gurugram 121001, India
| | - Ravi Kumar Pujala
- Soft and Active Matter Group, Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, Andhra Pradesh 517507, India
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102
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Kimna C, Miller Naranjo B, Eckert F, Fan D, Arcuti D, Mela P, Lieleg O. Tailored mechanosensitive nanogels release drugs upon exposure to different levels of stenosis. NANOSCALE 2022; 14:17196-17209. [PMID: 36226684 DOI: 10.1039/d2nr03292a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Owing to the unhealthy lifestyle and genetic susceptibility of today's population, atherosclerosis is one of the global leading causes of life-threatening cardiovascular diseases. Although a rapid intervention is required for severe blood vessel constrictions, a systemic administration of anticoagulant drugs is not the preferred method of choice as the associated risk of bleeding complications is high. In this study, we present mechanosensitive nanogels that exhibit tunable degrees of disintegration upon exposure to different levels of stenosis. Those nanogels can be further functionalized to encapsulate charged drug molecules such as heparin, and they efficiently release their cargo when passing stenotic constrictions; however, passive drug leakage in the absence of mechanical shear stress is very low. Furthermore, heparin molecules liberated from those mechanosensitive nanogels show a similar blood clot lysis efficiency as the free drug molecules, which demonstrates that drug encapsulation into those nanogels does not interfere with the functionality of the cargo. Thus, the hemocompatible and mechanoresponsive nanogels developed here represent a smart and efficient drug delivery platform that can offer safer solutions for vascular therapy.
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Affiliation(s)
- Ceren Kimna
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany
- Center for Protein Assemblies (CPA) and Munich Institute of Biomedical Engineering, Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Bernardo Miller Naranjo
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany
- Center for Protein Assemblies (CPA) and Munich Institute of Biomedical Engineering, Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Franziska Eckert
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany
- Center for Protein Assemblies (CPA) and Munich Institute of Biomedical Engineering, Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Di Fan
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany
- Center for Protein Assemblies (CPA) and Munich Institute of Biomedical Engineering, Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Dario Arcuti
- Medical Materials and Implants, Department of Mechanical Engineering and Munich Institute of Biomedical Engineering, TUM School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany
| | - Petra Mela
- Medical Materials and Implants, Department of Mechanical Engineering and Munich Institute of Biomedical Engineering, TUM School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany
| | - Oliver Lieleg
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748 Garching, Germany
- Center for Protein Assemblies (CPA) and Munich Institute of Biomedical Engineering, Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
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103
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Tom C, Narayana Sangitra S, Kumar Pujala R. Rheological Fingerprinting and Applications of Cellulose Nanocrystal Based Composites: A Review. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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104
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Mao R, Wang X, Cai S, Zhang G, Wang J. Quantitative investigation on the nonlinear viscoelasticity of magnetorheological gel under large amplitude oscillatory shear. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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105
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Ozcan İ, Ozyigit E, Erkoc S, Tavman S, Kumcuoglu S. Investigating the physical and quality characteristics and rheology of mayonnaise containing aquafaba as an egg substitute. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2022.111388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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106
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Electrochemically Enhanced Delivery of Pemetrexed from Electroactive Hydrogels. Polymers (Basel) 2022; 14:polym14224953. [PMID: 36433079 PMCID: PMC9692448 DOI: 10.3390/polym14224953] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022] Open
Abstract
Electroactive hydrogels based on derivatives of polyethyleneglycol (PEG), chitosan and polypyrrole were prepared via a combination of photopolymerization and oxidative chemical polymerization, and optionally doped with anions (e.g., lignin, drugs, etc.). The products were analyzed with a variety of techniques, including: FT-IR, UV-Vis, 1H NMR (solution state), 13C NMR (solid state), XRD, TGA, SEM, swelling ratios and rheology. The conductive gels swell ca. 8 times less than the non-conductive gels due to the presence of the interpenetrating network (IPN) of polypyrrole and lignin. A rheological study showed that the non-conductive gels are soft (G' 0.35 kPa, G″ 0.02 kPa) with properties analogous to brain tissue, whereas the conductive gels are significantly stronger (G' 30 kPa, G″ 19 kPa) analogous to breast tissue due to the presence of the IPN of polypyrrole and lignin. The potential of these biomaterials to be used for biomedical applications was validated in vitro by cell culture studies (assessing adhesion and proliferation of fibroblasts) and drug delivery studies (electrochemically loading the FDA-approved chemotherapeutic pemetrexed and measuring passive and stimulated release); indeed, the application of electrical stimulus enhanced the release of PEM from gels by ca. 10-15% relative to the passive release control experiment for each application of electrical stimulation over a short period analogous to the duration of stimulation applied for electrochemotherapy. It is foreseeable that such materials could be integrated in electrochemotherapeutic medical devices, e.g., electrode arrays or plates currently used in the clinic.
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107
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Veloso SRS, Gomes V, Mendes SLF, Hilliou L, Pereira RB, Pereira DM, Coutinho PJG, Ferreira PMT, Correa-Duarte MA, Castanheira EMS. Plasmonic lipogels: driving co-assembly of composites with peptide-based gels for controlled drug release. SOFT MATTER 2022; 18:8384-8397. [PMID: 36193825 DOI: 10.1039/d2sm00926a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Supramolecular short peptide-based gels are promising materials for the controlled release of drugs (e.g. chemotherapeutic drugs) owing to the biocompatibility and similarity to cell matrix. However, the drug encapsulation and control over its release, mainly the hydrophilic drugs, can be a cumbersome task. This can be overcome through encapsulation/compartmentalization of drugs in liposomes, which can also enable spatiotemporal control and enhanced drug release through a trigger, such as photothermia. Having this in mind, we explored the assembly of silica-coated gold nanoparticles and liposomes (storage units) with dehydropeptide-based hydrogels as a proof-of-concept to afford peptide-based NIR light-responsive lipogels. Several liposomes compositions were assessed that displayed influence on the final assembly properties by combining with silica-coated gold nanorods (∼106 nm). Gold nanospheres (∼11 nm) were used to study the preparation method, which revealed the importance of initially combine liposomes with nanoparticles and then the gelator solution to achieve a closer proximity of the nanoparticles to the liposomes. The control over a hydrophilic model drug, 5(6)-carboxyfluorescein, was only achieved by its encapsulation in liposomes, in which the presence of silica-coated nanorods further enabled the use of photothermia to induce the liposomes phase transition and stimulate the drug release. Further, both composites, the liposomes and silica-coated gold nanorods, induced a lower elastic modulus, but also provided an enhanced gelation kinetics. Hereby, this work advances fabrication strategies for the development of short peptide-based hydrogels towards on-demand, sustained and controlled release of hydrophilic drugs through photothermia under NIR light irradiation.
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Affiliation(s)
- Sérgio R S Veloso
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and LaPMET Associate Laboratory, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Valéria Gomes
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and LaPMET Associate Laboratory, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
- Centre of Chemistry (CQUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Sérgio L F Mendes
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and LaPMET Associate Laboratory, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Loic Hilliou
- Institute for Polymers and Composites, Department of Polymer Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Renato B Pereira
- REQUIMTE/LAQV, Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, University of Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - David M Pereira
- REQUIMTE/LAQV, Laboratory of Pharmacognosy, Department of Chemistry, Faculty of Pharmacy, University of Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Paulo J G Coutinho
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and LaPMET Associate Laboratory, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Paula M T Ferreira
- Centre of Chemistry (CQUM), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | | | - Elisabete M S Castanheira
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and LaPMET Associate Laboratory, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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108
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Kretschmer M, Ceña‐Diez R, Butnarasu C, Silveira V, Dobryden I, Visentin S, Berglund P, Sönnerborg A, Lieleg O, Crouzier T, Yan H. Synthetic Mucin Gels with Self-Healing Properties Augment Lubricity and Inhibit HIV-1 and HSV-2 Transmission. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203898. [PMID: 36104216 PMCID: PMC9661867 DOI: 10.1002/advs.202203898] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/14/2022] [Indexed: 05/02/2023]
Abstract
Mucus is a self-healing gel that lubricates the moist epithelium and provides protection against viruses by binding to viruses smaller than the gel's mesh size and removing them from the mucosal surface by active mucus turnover. As the primary nonaqueous components of mucus (≈0.2%-5%, wt/v), mucins are critical to this function because the dense arrangement of mucin glycans allows multivalence of binding. Following nature's example, bovine submaxillary mucins (BSMs) are assembled into "mucus-like" gels (5%, wt/v) by dynamic covalent crosslinking reactions. The gels exhibit transient liquefaction under high shear strain and immediate self-healing behavior. This study shows that these material properties are essential to provide lubricity. The gels efficiently reduce human immunodeficiency virus type 1 (HIV-1) and genital herpes virus type 2 (HSV-2) infectivity for various types of cells. In contrast, simple mucin solutions, which lack the structural makeup, inhibit HIV-1 significantly less and do not inhibit HSV-2. Mechanistically, the prophylaxis of HIV-1 infection by BSM gels is found to be that the gels trap HIV-1 by binding to the envelope glycoprotein gp120 and suppress cytokine production during viral exposure. Therefore, the authors believe the gels are promising for further development as personal lubricants that can limit viral transmission.
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Affiliation(s)
- Martin Kretschmer
- School of Engineering and Design, Department of Materials EngineeringTechnical University of MunichBoltzmannstrasse 1585748GarchingGermany
- Center for Protein AssembliesTechnical University of MunichErnst‐Otto‐Fischer Str. 885748GarchingGermany
| | - Rafael Ceña‐Diez
- Department of Medicine HuddingeDivision of Infectious DiseasesKarolinska University HospitalKarolinska Institutet, I73Stockholm141 86Sweden
| | - Cosmin Butnarasu
- Department of Molecular Biotechnology and Health ScienceUniversity of TurinTurin10135Italy
| | - Valentin Silveira
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
| | - Illia Dobryden
- Division of Bioeconomy and HealthDepartment of Material and Surface DesignRISE Research Institutes of SwedenMalvinas väg 3StockholmSE‐114 86Sweden
| | - Sonja Visentin
- Department of Molecular Biotechnology and Health ScienceUniversity of TurinTurin10135Italy
| | - Per Berglund
- Department of Industrial BiotechnologySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
| | - Anders Sönnerborg
- Department of Medicine HuddingeDivision of Infectious DiseasesKarolinska University HospitalKarolinska Institutet, I73Stockholm141 86Sweden
| | - Oliver Lieleg
- School of Engineering and Design, Department of Materials EngineeringTechnical University of MunichBoltzmannstrasse 1585748GarchingGermany
- Center for Protein AssembliesTechnical University of MunichErnst‐Otto‐Fischer Str. 885748GarchingGermany
| | - Thomas Crouzier
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
- AIMES – Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of TechnologyStockholmSweden
- Department of NeuroscienceKarolinska InstitutetStockholmSE‐171 77Sweden
| | - Hongji Yan
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
- AIMES – Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of TechnologyStockholmSweden
- Department of NeuroscienceKarolinska InstitutetStockholmSE‐171 77Sweden
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109
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Yu J, Li D, Wang LJ, Wang Y. Improving freeze-thaw stability and 3D printing performance of soy protein isolate emulsion gel inks by guar & xanthan gums. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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110
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Protein oleogels prepared by solvent transfer method with varying protein sources. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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111
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Mistry S, Fuhrmann PL, de Vries A, Karshafian R, Rousseau D. Structure-rheology relationship in monoolein liquid crystals. J Colloid Interface Sci 2022; 630:878-887. [DOI: 10.1016/j.jcis.2022.10.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/17/2022] [Accepted: 10/22/2022] [Indexed: 11/05/2022]
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112
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Ding W, Hanson J, Burghardt WR, López-Barrón CR, Robertson ML. Shear Alignment Mechanisms of Close-Packed Spheres in a Bulk ABA Triblock Copolymer. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenyue Ding
- William A. Brookshire Department of Chemical & Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, United States
| | - Josiah Hanson
- William A. Brookshire Department of Chemical & Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, United States
| | - Wesley R. Burghardt
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois,60208, United States
| | | | - Megan L. Robertson
- William A. Brookshire Department of Chemical & Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, United States
- Department of Chemistry, University of Houston, Houston, Texas 77204-4004, United States
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113
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Rihova M, Lepcio P, Cicmancova V, Frumarova B, Hromadko L, Bureš F, Vojtova L, Macak JM. The centrifugal spinning of vitamin doped natural gum fibers for skin regeneration. Carbohydr Polym 2022; 294:119792. [DOI: 10.1016/j.carbpol.2022.119792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 11/17/2022]
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114
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Rheological fingerprinting and tribological assessment of high internal phase emulsions stabilized by whey protein isolate: Effects of protein concentration and pH. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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115
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Song Y, Kim B, Park JD, Lee D. Probing metal-carboxylate interactions in cellulose nanofibrils-based hydrogels using nonlinear oscillatory rheology. Carbohydr Polym 2022; 300:120262. [DOI: 10.1016/j.carbpol.2022.120262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/29/2022] [Accepted: 10/21/2022] [Indexed: 11/28/2022]
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116
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Zhang Y, Wang Y, Zhang R, Yu J, Gao Y, Mao L. Tuning the rheological and tribological properties to simulate oral processing of novel high internal phase oleogel-in-water emulsions. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107757] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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117
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Martin AJ, Li W, Watts J, Hilmas GE, Leu MC, Huang T. Particle Migration in Large Cross-Section Ceramic On-Demand Extrusion Components. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.10.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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118
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Badani Prado RM, Mishra S, Ahmed H, Burghardt WR, Kundu S. Temperature- and strain-dependent transient microstructure and rheological responses of endblock-associated triblock gels of different block lengths in a midblock selective solvent. SOFT MATTER 2022; 18:7020-7034. [PMID: 36070440 DOI: 10.1039/d2sm00567k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Endblock associative ABA gels in midblock selective solvents are attractive due to their easily tunable mechanical properties. Here, we present the effects of A- and B-block lengths on the rheological properties and microstructure of ABA gels by considering three low and one high polymer concentrations. The triblock polymer considered is poly(methyl methacrylate)-poly(n-butyl acrylate)-poly(methyl methacrylate) [PMMA-PnBA-PMMA] and the midblock solvent is 2-ethyl-1-hexanol. The gelation temperature has been found to be strongly dependent on the B-block (PnBA) length, as longer B-blocks facilitate network formation resulting in higher gelation temperature even with lower polymer chain density. Longer A-blocks (PMMA chains) make the endblock association stronger and significantly increase the relaxation time of gels. Temperature-dependent microstructure evolution for the gels with high polymer concentration reveals that the gel microstructure does not change significantly after the gel formation takes place. The dynamic change of microstructure in an applied strain cycle was captured using RheoSAXS experiments. The microstructure orients with the applied strain and the process is reversible in nature, indicating no significant A-block pullout. Our results provide new understandings regarding the temperature and strain-dependent microstructural change of ABA gels in midblock selective solvents.
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Affiliation(s)
- Rosa Maria Badani Prado
- Dave C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, Mississippi State, MS 39762, USA.
| | - Satish Mishra
- Dave C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, Mississippi State, MS 39762, USA.
| | - Humayun Ahmed
- Dave C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, Mississippi State, MS 39762, USA.
| | - Wesley R Burghardt
- Department of Chemical Engineering, Northwestern University, Evanston, IL, USA
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, Mississippi State, MS 39762, USA.
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119
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Vibration Characteristics of Shear Thickening Fluid-Based Sandwich Structures. ADVANCES IN POLYMER TECHNOLOGY 2022. [DOI: 10.1155/2022/6959485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The vibration attenuation mechanism of shear thickening fluid- (STF-) filled sandwich structures was investigated in this study. Structural equivalent damping, stiffness, and mass increased simultaneously with the increase in the volume fraction of shear thickening fluid. However, the damping ratio decreased and natural frequency increased with the increase in structural mass. Thus, the damping ratio was not a monotonically increasing function of the volume fraction of STF. A modified shear strain model of the damping layer was developed based on the following conditions: (1) under the condition of small strain, shear thickening fluid was regarded as linear viscoelastic material, and (2) the warpage of the sandwich beam was considered during deformation and the influence of STF on the shear strain of sandwich beam. According to the modified shear strain model of the damping layer, the shear thickening occurred at 1 Hz to 20 Hz during vibration. Therefore, the resonance point of the structure shifted to the left. The predictions were in excellent agreement with the experimental results. The results demonstrated that shear thickening fluid improved the vibration damping performance of the sandwich structure, while the thickening ability was not the higher, the better.
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120
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Berezney JP, Valentine MT. A compact rotary magnetic tweezers device for dynamic material analysis. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:093701. [PMID: 36182480 DOI: 10.1063/5.0090199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 07/18/2022] [Indexed: 06/16/2023]
Abstract
Here we present a new, compact magnetic tweezers design that enables precise application of a wide range of dynamic forces to soft materials without the need to raise or lower the magnet height above the sample. This is achieved through the controlled rotation of the permanent magnet array with respect to the fixed symmetry axis defined by a custom-built iron yoke. These design improvements increase the portability of the device and can be implemented within existing microscope setups without the need for extensive modification of the sample holders or light path. This device is particularly well-suited to active microrheology measurements using either creep analysis, in which a step force is applied to a micron-sized magnetic particle that is embedded in a complex fluid, or oscillatory microrheology, in which the particle is driven with a periodic waveform of controlled amplitude and frequency. In both cases, the motions of the particle are measured and analyzed to determine the local dynamic mechanical properties of the material.
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Affiliation(s)
- John P Berezney
- Mechanical Engineering Department, University of California, Santa Barbara, California 93106, USA
| | - Megan T Valentine
- Mechanical Engineering Department, University of California, Santa Barbara, California 93106, USA
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121
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Allard J, Burgers S, Rodríguez González MC, Zhu Y, De Feyter S, Koos E. Effects of particle roughness on the rheology and structure of capillary suspensions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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122
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Iyer BVS. Effect of functional anisotropy on the local dynamics of polymer grafted nanoparticles. SOFT MATTER 2022; 18:6209-6221. [PMID: 35894123 DOI: 10.1039/d2sm00710j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
End-functionalised polymer grafted nanoparticles (PGNs) form bonds when their coronas overlap. The bonded interactions between the overlapping PGNs depend on the energy of the bonds (U). In the present study, oscillatory deformation imposed on a simple system with interacting PGNs placed on the vertices of a triangle is employed to examine the local dynamics as a function of energy of the bonds and the frequency of oscillation relative to the characteristic rupture frequency, ω0 = 2πν exp(-U/kBT), of the bonds. In particular, the effect of functional anisotropy is studied by introducing bonds of two different energies between adjacent PGNs. A multicomponent model developed by Kadre and Iyer, Macromol. Theory Simul., 2021, 30, 2100005, that combines the features of effective interactions between PGNs, self-consistent field theory and master equation approach to study bond kinetics is employed to obtain the local dynamics. The resulting force-strain curves are found to exhibit a simple broken symmetry where Fx (γ,) ≠ -Fx (-γ,-) and Fy (γ,) ≠ Fy (-γ,-) in systems with functional anisotropy. Fourier analysis of the dynamic response reveals that functional anisotropy leads to finite even harmonic terms and systematic variation of both the elastic and dissipative response from that of the isotropic systems. Furthermore, the intra-cycle variations in the strain stiffening and shear thickening ratios obtained from the analysis indicate that functional anisotropy leads to anisotropic nonlinear response.
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Affiliation(s)
- Balaji V S Iyer
- Department of Chemical Engineering, IIT Hyderabad, Hyderabad, India.
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Minale M, Martone R, Carotenuto C. Microstructural changes of concentrated Newtonian suspensions in the first oscillation cycles probed with linear and non-linear rheology. SOFT MATTER 2022; 18:6051-6065. [PMID: 35929371 DOI: 10.1039/d2sm00600f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Carotenuto et al. (Rheol Acta, 2021, 60, 309) recently showed that the complex viscosity of a Newtonian non-Brownian suspension is smaller than the steady shear one, whatever the imposed strain amplitude. Oscillatory shear can alter the microstructure through a shear induced particle diffusion mechanism. This mechanism needs time to show its effect and cannot be invoked to explain the observed mismatch between the steady shear and the complex viscosity. Moreover, in the limit of vanishing strain amplitudes and of very large ones, where the oscillatory shear is equivalent to consecutive steady flow reversals, the oscillatory shear should not alter the microstructure and the Cox-Merz rule should hold. With a combination of approaches exploiting the Lissajous-Bowditch plots, the Fourier transform rheology and the Sequence of Physical Processes, we investigate the microstructure changes induced in the first oscillatory cycles. The results from the different analyses agree with the microstructure rearranging mechanisms proposed by Carotenuto et al.: at small amplitudes, the oscillatory shear rotates couples of touching particles towards the flow direction, at medium amplitudes it breaks particle clusters and at very large amplitudes it reshuffles and reorients all the particles. We show that the vast majority of the microstructure rearrangement occurs soon after the flow inversion of the first cycle, while before it the microstructure is not altered. This allows us to suggest a procedure to "recover" the Cox-Merz rule: a single cycle of oscillation must be imposed and the stress response of the sole first quarter of oscillation must be analysed.
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Affiliation(s)
- Mario Minale
- University of Campania "Luigi Vanvitelli", Department of Engineering, Real Casa dell'Annunziata via Roma 29, 81031 Aversa (CE), Italy. mario.minaleatunicampania.it
| | - Raffaella Martone
- University of Campania "Luigi Vanvitelli", Department of Engineering, Real Casa dell'Annunziata via Roma 29, 81031 Aversa (CE), Italy. mario.minaleatunicampania.it
| | - Claudia Carotenuto
- University of Campania "Luigi Vanvitelli", Department of Engineering, Real Casa dell'Annunziata via Roma 29, 81031 Aversa (CE), Italy. mario.minaleatunicampania.it
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124
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Loh WW, Huang M, Goh L, Lim CC, Goh R, Lin Q, Guo L, Loh XJ, Lim JYC. A Polyanionic Tartrate-containing Temperature-responsive Hydrogel. Chem Asian J 2022; 17:e202200621. [PMID: 35945646 DOI: 10.1002/asia.202200621] [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: 06/13/2022] [Revised: 07/29/2022] [Indexed: 11/08/2022]
Abstract
Thermogels, a class of hydrogels which show spontaneous sol-gel phase transition when warmed, are an important class of soft biomaterials. To date, however, most amphiphilic polymers that are able to form thermogels in aqueous solution are uncharged, and the influence of ionisable groups on thermogelation are largely unknown. Herein, we report the first example of a polyanionic amphiphilic multi-block copolymer, containing multiple pendant carboxylate groups, that can form transparent thermogels spontaneously when warmed up to physiological temperature. We demonstrate that introducing negative charges onto thermogelling polymers could significantly alter the properties of the micelles and thermogels formed. Furthermore, the polymer's polyanionic character provides new options for modulating the gel rheological properties, such as stiffness and gelation temperatures, through electrostatic interactions with different cations. We also demonstrated the polyanionic thermogel allowed slower sustained release of a cationic model drug compound compared to an anionic one over 2 weeks. The findings from our study demonstrate exciting new possibilities for advanced biomedical applications using charged polyelectrolyte thermogel materials.
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Affiliation(s)
- Wei Wei Loh
- Institute of Materials Research and Engineering, Soft Materials, SINGAPORE
| | - Miao Huang
- Institute of Materials Research and Engineering, Soft Materials, SINGAPORE
| | - Leonard Goh
- Institute of Materials Research and Engineering, Soft Materials, SINGAPORE
| | - Chen Chuan Lim
- Institute of Sustainability for Chemicals Energy and Environment, SIA, SINGAPORE
| | - Rubayn Goh
- Institute of Materials Research and Engineering, Strategic Research Initiative, SINGAPORE
| | - Qianyu Lin
- Institute of Materials Research and Engineering, Soft Materials, SINGAPORE
| | - Liangfeng Guo
- Institute of Sustainability for Chemicals Energy and Environment, SIA, SINGAPORE
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, Soft Materials, SINGAPORE
| | - Jason Yuan Chong Lim
- Institute of Materials Research and Engineering, Soft Materials, 2 Fusionopolis Way, Innovis, 138634, Singapore, SINGAPORE
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125
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Tavares L, Zapata Noreña CP, Barros HL, Smaoui S, Lima PS, Marques de Oliveira M. Rheological and structural trends on encapsulation of bioactive compounds of essential oils: A global systematic review of recent research. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107628] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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126
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Effect of gums on the multi-scale characteristics and 3D printing performance of potato starch gel. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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127
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Feng S, Xing JJ, Guo XN, Zhu KX. Nonlinear rheological properties of Chinese cold skin noodle (liangpi) and wheat starch gels by large amplitude oscillatory shear (LAOS). Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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128
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The micromorphology and large amplitude oscillatory shear behaviors of hydrocarbon gel fuels filled with fumed silica and aluminium sub-microparticles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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129
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Analytic Matrix Method for Frequency Response Techniques Applied to Nonlinear Dynamical Systems II: Large Amplitude Oscillations. MATHEMATICS 2022. [DOI: 10.3390/math10152700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This work is the second in a series of articles that deal with analytical solutions of nonlinear dynamical systems under oscillatory input that may exhibit harmonic frequencies. Frequency response techniques of nonlinear dynamical systems are usually analyzed with numerical methods, because in most cases analytical solutions such as the harmonic balance series solution turn out to be difficult, if not impossible, as they are based on an infinite series of trigonometric functions with harmonic frequencies. The key contribution of the analytic matrix methods reported in the present series of articles is to work with the invariant submanifold of the problem and to propose the solution as infinite power series of the oscillatory input; this procedure is a direct one that speeds up the computations compared to traditional series solution methods. The method reported in the first contribution of this series allows for the computation of the analytical solution only for small and medium amplitudes of the oscillatory input, because these series may diverge when large amplitudes are applied. Therefore, the analytic matrix method reported here, which is a reconfiguration of the method proposed in the first contribution in this series, allows the solving of problems in the regime of large-amplitude oscillations where the contributions of the high order harmonics affect the amplitudes of the low order harmonics, leading to amplitude- and frequency-dependent coefficients for the infinite series of trigonometric function expansion.
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130
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Wang H, Wang P, Shen Q, Yang H, Xie H, Huang M, Zhang J, Zhao Q, Luo P, Jin D, Wu J, Jian S, Chen X. Insight into the effect of ultrasound treatment on the rheological properties of myofibrillar proteins based on the changes in their tertiary structure. Food Res Int 2022; 157:111136. [DOI: 10.1016/j.foodres.2022.111136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/07/2023]
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131
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Erturk MY, Rogers SA, Kokini J. Comparison of Sequence of Physical Processes (SPP) and Fourier Transform Coupled with Chebyshev Polynomials (FTC) methods to Interpret Large Amplitude Oscillatory Shear (LAOS) Response of Viscoelastic Doughs and Viscous Pectin Solution. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107558] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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132
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Sun D, Wu M, Zhou C, Wang B. Transformation of high moisture extrusion on pea protein isolate in melting zone during: From the aspects of the rheological property, physicochemical attributes and modification mechanism. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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133
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López-Santiago RF, Delgado J, Castillo R. Micellar entanglement and its relation to the elastic behavior of wormlike micelle fluids. J Colloid Interface Sci 2022; 626:1015-1027. [DOI: 10.1016/j.jcis.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/29/2022] [Accepted: 07/01/2022] [Indexed: 11/26/2022]
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134
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135
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Tai CW, Narsimhan V. Experimental and theoretical studies of cross-stream migration of non-spherical particles in a quadratic flow of a viscoelastic fluid. SOFT MATTER 2022; 18:4613-4624. [PMID: 35697338 DOI: 10.1039/d2sm00011c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We experimentally investigate the cross-stream migration of spherical, prolate, and oblate particles in a circular tube flow of a weakly viscoelastic fluid (De = O(10-2)) with negligible inertia (Re ≈ 0). From our previous theoretical studies, we developed mathematical models based on a second order fluid (i.e., retarded expansion for De ≪ 1) to characterize the migration trajectory of the particles in the absence of wall effects. The theory shows that the particle migration speed is proportional to the length the particle spans in the shear gradient direction (Lsg), and furthermore quantifies how particle shape alters the migration timescale. For particles with identical volume, spherical particles show the fastest migration speed among all the particles. The distinctive orientation behavior of prolate and oblate spheroids leads to a faster migration speed for an oblate particle compared to a prolate particle of the same aspect ratio. In this work, we verify our theory with microfluidic flow experiments using a model suspension of polystyrene (PS) micro-particles in a density-matched polyvinylpyrrolidone (PVP) solution (a Boger fluid). The experimental results show good qualitative and quantitative agreement with the theoretically predicted particle migration speed, indicating that the theory is able to provide reasonable predictions for real microfluidic systems.
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136
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Bonnaud PA, Ushiyama H, Tejima S, Fujita JI. Viscoelasticity of Low-Molecular-Weight Polyelectrolytes. J Phys Chem B 2022; 126:4899-4913. [PMID: 35732066 DOI: 10.1021/acs.jpcb.2c01448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Shear-thickening fluids that absorb the impact energy of high-velocity projectiles are of great interest for aerospace and body-armor applications. In such a frame, we investigate transient states of neat and aqueous polyelectrolytes (PE) having low molecular weights and containing poly([2-(methacryloyloxy)ethyl]trimethylammonium) as polycations and poly(acrylamide-co-acrylic acid) as polyanions. We compare results with those of bulk water. We employ nonequilibrium molecular dynamics to simulate oscillatory shear, mainly in the linear viscoelastic regime. We find that neat PE exhibits properties of a viscoelastic solid, whereas water and the aqueous mixture of PE conform to viscoelastic liquids with Maxwellian behavior at low angular frequencies. Terminal relaxation times are ∼0.499 and ∼1.385 ps for water and the aqueous mixture of PE, respectively. At high angular frequencies, storage moduli show anomalous behaviors that correspond to transitions between shear thinning and shear thickening in complex shear viscosities. The change in potential energy with the increase of the angular frequency is mainly driven by intramolecular interactions for neat PE, whereas short-range Coulomb interactions are the major contributions for water and the aqueous mixture of PE. Upon observation of the molecular configurations, only the local polyionic structure in the aqueous mixture of PE shows improvement when increasing the angular frequency, whereas the rest remains barely affected. Thus, the water structure in the aqueous mixture of PE allows the storage of energy elastically through the hydrogen-bond network at large angular frequencies, whereas the mechanical contribution of polyions weakens and fully vanishes at the beginning of shear thinning, explaining the superimposed data with data of bulk water. Our method and findings set the path for future molecular simulations in the nonlinear viscoelastic regime with more complex underlying molecular mechanisms.
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Affiliation(s)
- Patrick A Bonnaud
- Department of Computational Science and Technology, Research Organization for Information Science and Technology, 1-18-16 Hamamatsucho, Minato, Tokyo 105-0013, Japan.,University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Hiroshi Ushiyama
- Department of Computational Science and Technology, Research Organization for Information Science and Technology, 1-18-16 Hamamatsucho, Minato, Tokyo 105-0013, Japan
| | - Syogo Tejima
- Department of Computational Science and Technology, Research Organization for Information Science and Technology, 1-18-16 Hamamatsucho, Minato, Tokyo 105-0013, Japan
| | - Jun-Ichi Fujita
- Institute of Applied Physics, Graduate School of Pure and Applied Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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137
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Wijarnprecha K, Fuhrmann P, Gregson C, Sillick M, Sonwai S, Rousseau D. Temperature-dependent properties of fat in adipose tissue from pork, beef and lamb. Part 2: rheology and texture. Food Funct 2022; 13:7132-7143. [PMID: 35699075 DOI: 10.1039/d2fo00582d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Matching the texture of fat in plant-based meat alternatives requires an in-depth understanding of the rheology of animal adipose tissue which, to-date, remains under-studied. Here, we characterised the small and large deformation behaviour of back fat from pork, beef, and lamb, with the underlying goal being the establishment of the temperature-dependent structure-function relationship governing the texture and rheology of adipose tissue. The dynamic rheological behaviour of the back fats was characterised via frequency and amplitude sweeps and large amplitude oscillatory strain (LAOS), as well as texture analysis via puncture tests. At 20 °C, prior to heating, the small and large deformation properties of adipose tissue were dominated by the solid fat phase within the adipose cells. Upon heating to 80 °C, with the fat phase molten, the protein network underpinning the structure of the back fats conferred elastic behaviour to the tissues, and the now-molten oil partly leaked from the adipocytes into the surrounding interstitial space. Upon re-cooling, a bicontinuous network of fat crystals and protein contributed to back fat rheology. Large deformation rheology revealed animal species-specific differences. Prior to heating, pork back fat was characterised by soft yielding behaviour while beef and lamb back fat showed abrupt yielding and intra-cycle strain stiffening. Post-heating, lamb showed the highest stiffness, compared to pork and beef, as well as non-linearities in its stress-strain relationship obtained via LAOS. Such fundamental understanding is essential to provide the required insights to replicate the functionality of adipose tissue using plant-based materials.
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Affiliation(s)
- Khakhanang Wijarnprecha
- Department of Chemistry and Biology, Toronto Metropolitan University, 350 Victoria St., Toronto, Ontario, Canada.
| | - Philipp Fuhrmann
- Department of Chemistry and Biology, Toronto Metropolitan University, 350 Victoria St., Toronto, Ontario, Canada.
| | | | | | - Sopark Sonwai
- Department of Food Technology, Faculty of Engineering and Industrial Technology, Silpakorn University, Thailand
| | - Dérick Rousseau
- Department of Chemistry and Biology, Toronto Metropolitan University, 350 Victoria St., Toronto, Ontario, Canada.
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138
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Morlet-Decarnin L, Divoux T, Manneville S. Slow dynamics and time–composition superposition in gels of cellulose nanocrystals. J Chem Phys 2022; 156:214901. [DOI: 10.1063/5.0085660] [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
Cellulose nanocrystals (CNCs) are rodlike biosourced colloidal particles used as key building blocks in a growing number of materials with innovative mechanical or optical properties. While CNCs form stable suspensions at low volume fractions in pure water, they aggregate in the presence of salt and form colloidal gels with time-dependent properties. Here, we study the impact of salt concentration on the slow aging dynamics of CNC gels following the cessation of a high-shear flow that fully fluidizes the sample. We show that the higher the salt content, the faster the recovery of elasticity upon flow cessation. Most remarkably, the elastic modulus G′ obeys a time–composition superposition principle: the temporal evolution of G′ can be rescaled onto a universal sigmoidal master curve spanning 13 orders of magnitude in time for a wide range of salt concentrations. Such a rescaling is obtained through a time-shift factor that follows a steep power-law decay with increasing salt concentration until it saturates at large salt content. These findings are robust to changes in the type of salt and the CNC content. We further show that both linear and nonlinear rheological properties of CNC gels of various compositions, including, e.g., the frequency-dependence of viscoelastic spectra and the yield strain, can be rescaled based on the sample age along the general master curve. Our results provide strong evidence for universality in the aging dynamics of CNC gels and call for microstructural investigations during recovery as well as theoretical modeling of time–composition superposition in rodlike colloids.
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Affiliation(s)
| | - Thibaut Divoux
- ENSL, CNRS, Laboratoire de Physique, F-69342 Lyon, France
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139
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Tian Y, Song Q, Liu Z, Ye F, Zhou Y, Zhao G. Linear and non-linear rheological properties of water–ethanol hybrid pectin gels for aroma enhancement. Food Chem X 2022; 14:100328. [PMID: 35601213 PMCID: PMC9118527 DOI: 10.1016/j.fochx.2022.100328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/09/2022] [Accepted: 05/05/2022] [Indexed: 11/16/2022] Open
Abstract
Linear to non-linear rheological responses of WEPGs were characterized. Gel rheological properties can be tuned by changing ethanol concentration. Non-linear viscoelasticity should be considered for aroma enhancement of WEPGs. The most relevant indicator to aroma release is e3/e1 under critical strain.
Whereas water–ethanol hybrid gels present an opportunity to realize aroma enhancement, translating hypothesis into practice is limited by poorly defined viscoelastic characteristics of those gels. In this work, the linear and non-linear rheological properties of water–ethanol hybrid pectin gels (WEPGs) were studied. Those WEPGs are physical gels in nature and the WEPG of 28.6% v/v ethanol differs basically from those of higher ethanol concentrations in the gel strength, resistance to deformation and non-linear properties. The retention of isopentyl acetate of WEPGs is dramatically improved by increasing the ethanol concentration to 33.3% v/v in the co-solvent system, but it is not further improved at 37.5% v/v. The cluster analysis reveals strong positive correlations between the isopentyl acetate release concentration and v3/v1 and absolute value of S/T ratio under 100% strain, suggesting the non-linear rheological responses of WEPGs have to be taken into account for which the enhancement of aroma is desired.
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Affiliation(s)
- Yuan Tian
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
| | - Qinghui Song
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
| | - Zhenjun Liu
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
| | - Fayin Ye
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
| | - Yun Zhou
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
- Corresponding authors.
| | - Guohua Zhao
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
- Corresponding authors.
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140
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Heydari A, Razavi SMA. Impact of HHP-treated starches on LAOS, tribology, and steady shear behavior of reduced-fat O/W emulsions. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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141
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Synergistic interactions between konjac glucomannan and welan gum mixtures. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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142
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Khodami S, Kaniewska K, Stojek Z, Karbarz M. Hybrid double-network dual-crosslinked hydrogel with self-healing ability and mechanical stability. Synthesis, characterization and application for motion sensors. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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143
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144
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Cao W, Gao R, Wan X, He Z, Chen J, Wang Y, Hu W, Li J, Li W. Effects of globular and flexible structures on the emulsifying and interfacial properties of mixed soy proteins. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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145
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Otsuki M, Hayakawa H. Softening and Residual Loss Modulus of Jammed Grains under Oscillatory Shear in an Absorbing State. PHYSICAL REVIEW LETTERS 2022; 128:208002. [PMID: 35657892 DOI: 10.1103/physrevlett.128.208002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 12/26/2021] [Accepted: 04/22/2022] [Indexed: 06/15/2023]
Abstract
From a theoretical study of the mechanical response of jammed materials comprising frictionless and overdamped particles under oscillatory shear, we find that the material becomes soft, and the loss modulus remains nonzero even in an absorbing state where any irreversible plastic deformation does not exist. The trajectories of the particles in this region exhibit hysteresis loops. We succeed in clarifying the origin of the softening of the material and the residual loss modulus with the aid of Fourier analysis. We also clarify the roles of the yielding point in the softening to distinguish the plastic deformation from reversible deformation in the absorbing state.
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Affiliation(s)
- Michio Otsuki
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hisao Hayakawa
- Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawaoiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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146
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Ozmen D, Toker OS. Large‐amplitude oscillatory shear behavior of xanthan gum/locust bean gum mixture: Effect of preparation methods on synergistic interaction. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Duygu Ozmen
- Chemical and Metallurgical Engineering Faculty, Food Engineering Department Yildiz Technical University Istanbul Turkey
| | - Omer Said Toker
- Chemical and Metallurgical Engineering Faculty, Food Engineering Department Yildiz Technical University Istanbul Turkey
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147
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Pectin degree of esterification influences rheology and digestibility of whey protein isolate-pectin stabilized bilayer oil-in-water nanoemulsions. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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148
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Shakeri P, Jung M, Seemann R. Scaling purely elastic instability of strongly shear thinning polymer solutions. Phys Rev E 2022; 105:L052501. [PMID: 35706259 DOI: 10.1103/physreve.105.l052501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Flow of viscoelastic polymer solutions in curved channels exhibits instability caused by the elastic nature of polymers even at low Reynolds numbers. However, scaling of the onset of this purely elastic instability in semidilute polymer solutions has not been previously reported. Here we experimentally investigate the flow of highly elastic polymer solutions above their overlap concentrations using pressure measurements and particle image velocimetry. We demonstrate that the onset of instability can be scaled by including shear dependent rheological properties of the polymer solutions in the nonlinear stability analysis. As a result, a universal criterion as function of normalized polymer concentration is provided for scaling the onset of purely elastic instability in the semidilute regime regardless of the type and molecular weight of the polymer.
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Affiliation(s)
- Pegah Shakeri
- Experimental Physics, Saarland University, 66123 Saarbrücken, Germany and Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Michael Jung
- Experimental Physics, Saarland University, 66123 Saarbrücken, Germany and Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Ralf Seemann
- Experimental Physics, Saarland University, 66123 Saarbrücken, Germany and Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
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McKenna GB, Chen D, Mangalara SCH, Kong D, Banik S. Some open challenges in polymer physics*. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gregory B. McKenna
- Department of Chemical Engineering Texas Tech University Lubbock Texas USA
- Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh North Carolina USA
| | - Dongjie Chen
- Department of Chemical Engineering Texas Tech University Lubbock Texas USA
| | | | - Dejie Kong
- Department of Chemical Engineering Texas Tech University Lubbock Texas USA
| | - Sourya Banik
- Department of Chemical Engineering Texas Tech University Lubbock Texas USA
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150
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Wang Y, Selomulya C. Food rheology applications of large amplitude oscillation shear (LAOS). Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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