1
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Bisht A, Goh KKT, Sims IM, Edwards PJB, Matia-Merino L. Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age. Carbohydr Polym 2024; 329:121757. [PMID: 38286538 DOI: 10.1016/j.carbpol.2023.121757] [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: 10/15/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/31/2024]
Abstract
A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar analysis and 1H and 13C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (Mw) was reduced with increasing age, from ~4.1 × 106 to ~2.1 × 106 Da from stage 1 to stage 3, respectively. This decrease in Mw (and size) consequently reduced the shear viscosity (ηs-Stage 1 > ηs-Stage 2 > ηs-Stage 3). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3.
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Affiliation(s)
- Akshay Bisht
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
| | - Kelvin K T Goh
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
| | - Ian M Sims
- The Ferrier Research Institute, Victoria University of Wellington, New Zealand.
| | - Patrick J B Edwards
- School of Natural Sciences, Massey University, Palmerston North, New Zealand.
| | - Lara Matia-Merino
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
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2
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Huang H, Zheng C, Huang C, Wang S. Dissolution behavior of ionic liquids for different ratios of lignin and cellulose in the preparation of nanocellulose/lignin blends. J Colloid Interface Sci 2024; 657:767-777. [PMID: 38081111 DOI: 10.1016/j.jcis.2023.12.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/28/2023] [Accepted: 12/03/2023] [Indexed: 01/02/2024]
Abstract
Lignin is regarded as a potential solution for boosting the strength of cellulose-based products. However, the mechanism of co-solubilization for lignin and cellulose has not been investigated. In this study, the effect of lignin content on the interaction between lignin and nanocellulose during lignin/cellulose co-dissolution was examined. The results revealed that lignin binds to nanocellulose throughout the dissolution process to limit the degradation of cellulose and to prepare nanocellulose/lignin composites. Moreover, the S units in lignin were more likely to interact with cellulose during the dissolution process, whereas the G units were more likely to condense. However, when the lignin content exceeded 30 wt%, the excess lignin created a severe condensation reaction, which led to a decrease in the lignin content bound to cellulose, resulting in an unequal dissolution of cellulose. Thus, a small amount of lignin attached to cellulose during the co-dissolution of lignin and cellulose inhibits cellulose degradation and can be utilized to create nanocellulose/lignin to extend the potential applications of nanocellulosic materials.
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Affiliation(s)
- Haohe Huang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chaojian Zheng
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chongxing Huang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China.
| | - Shuangfei Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
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3
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Rodrigues T, Mota R, Gales L, Tamagnini P, Campo-Deaño L. Microrheological characterisation of Cyanoflan in human blood plasma. Carbohydr Polym 2024; 326:121575. [PMID: 38142107 DOI: 10.1016/j.carbpol.2023.121575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/23/2023] [Accepted: 11/07/2023] [Indexed: 12/25/2023]
Abstract
Naturally occurring polysaccharidic biopolymers released by marine cyanobacteria are of great interest for numerous biomedical applications, such as wound healing and drug delivery. Such polymers generally exhibit high molecular weight and an entangled structure that impact the rheology of biological fluids. However, biocompatibility tests focus not so much on rheological properties as on immune response. In the present study, the rheological behaviour of native blood plasma as a function of the concentration of a cyanobacterium biopolymer is investigated via multiple particle tracking microrheology, which measures the Brownian motion of probes embedded in a sample, and cryogenic scanning electron microscope microstructural characterisation. We use Cyanoflan as the biopolymer of choice, and profit from our knowledge of its chemical structure and its exciting potential for biotechnological applications. A sol-gel transition is identified using time-concentration superposition and the power-law behaviour of the incipient network's viscoelastic response is observed in a variety of microrheological data. Our results point to rheology-based principles for blood compatibility tests by facilitating the assignment of quantitative values to specific properties, as opposed to more heuristic approaches.
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Affiliation(s)
- T Rodrigues
- CEFT - Centro de Estudos de Fenómenos de Transporte, Depto. de Engenharia Mecânica, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE - Laboratório Associado em Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - R Mota
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - L Gales
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - P Tamagnini
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; Depto. de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Ed. FC4, 4169-007 Porto, Portugal
| | - L Campo-Deaño
- CEFT - Centro de Estudos de Fenómenos de Transporte, Depto. de Engenharia Mecânica, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE - Laboratório Associado em Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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4
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Wang Y, Zhu H, Qiao M, Luo Y. Glycerol/organic acid-based ternary deep eutectic solvents as a green approach to recover chitin with different molecular weight from seafood waste. Int J Biol Macromol 2024; 257:128714. [PMID: 38081487 DOI: 10.1016/j.ijbiomac.2023.128714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 01/27/2024]
Abstract
In this study, we designed a green and efficient approach for the fractionation of high-purity chitin with tunable molecular weights from seafood waste. This was achieved by using ternary deep eutectic solvents (TDESs) composed of choline chloride as a hydrogen bond acceptor, glycerol as the polyol-based hydrogen bond donor, together with lactic acid or malic acid. Two binary DESs and four TDESs were evaluated for their ability to recover chitin. The extracted chitin exhibited not only high yield with excellent protein and mineral removal, but also high purity with similar crystallinity patterns as standard chitin. However, the average molecular weights, viscosity behavior and morphology of chitin extracted by DESs were varied and influenced by organic acid to glycerol molar ratios. The molecular weights of chitin extracted by lactic acid-based TDES ranged from 264 kDa to 541 kDa, but malic acid-based TEDS displayed a stronger depolymerization effect, resulting in chitin with a smaller molecular weight of less than 300 kDa. Lactic acid-based TDES revealed that the purity of chitin remained higher than 92 % after three cycles. This sustainable and environmentally friendly extraction system holds great potential to recover chitin from seafood waste, opening a new era for chitin extraction and applications.
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Affiliation(s)
- Yi Wang
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States
| | - Honglin Zhu
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States
| | - Mingyu Qiao
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States
| | - Yangchao Luo
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States.
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5
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Norfarhana AS, Ilyas RA, Ngadi N, Othman MHD, Misenan MSM, Norrrahim MNF. Revolutionizing lignocellulosic biomass: A review of harnessing the power of ionic liquids for sustainable utilization and extraction. Int J Biol Macromol 2024; 256:128256. [PMID: 38000585 DOI: 10.1016/j.ijbiomac.2023.128256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
The potential for the transformation of lignocellulosic biomass into valuable commodities is rapidly growing through an environmentally sustainable approach to harness its abundance, cost-effectiveness, biodegradability, and environmentally friendly nature. Ionic liquids (ILs) have received considerable and widespread attention as a promising solution for efficiently dissolving lignocellulosic biomass. The fact that ILs can act as solvents and reagents contributes to their widespread recognition. In particular, ILs are desirable because they are inert, non-toxic, non-flammable, miscible in water, recyclable, thermally and chemically stable, and have low melting points and outstanding ionic conductivity. With these characteristics, ILs can serve as a reliable replacement for traditional biomass conversion methods in various applications. Thus, this comprehensive analysis explores the conversion of lignocellulosic biomass using ILs, focusing on main components such as cellulose, hemicellulose, and lignin. In addition, the effect of multiple parameters on the separation of lignocellulosic biomass using ILs is discussed to emphasize their potential to produce high-value products from this abundant and renewable resource. This work contributes to the advancement of green technologies, offering a promising avenue for the future of biomass conversion and sustainable resource management.
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Affiliation(s)
- A S Norfarhana
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia; Department of Petrochemical Engineering, Politeknik Tun Syed Nasir Syed Ismail, Pagoh Education Hub, 84600 Pagoh Muar Johor, Malaysia
| | - R A Ilyas
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia; Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
| | - Norzita Ngadi
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia; Advanced Membrane Technology Research Centre (AMTEC), Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Muhammad Syukri Mohamad Misenan
- Department of Chemistry, College of Arts and Science, Yildiz Technical University, Davutpasa Campus, 34220 Esenler, Istanbul, Turkey
| | - Mohd Nor Faiz Norrrahim
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia, Kem Perdana Sungai Besi, 57000 Kuala Lumpur, Malaysia
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6
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Du J, Páez J, Otero P, Sánchez PB. Rapid in situ quantification of rheo-optic evolution for cellulose spinning in ionic solvents. Carbohydr Polym 2023; 320:121229. [PMID: 37659795 DOI: 10.1016/j.carbpol.2023.121229] [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: 03/29/2023] [Revised: 06/28/2023] [Accepted: 07/20/2023] [Indexed: 09/04/2023]
Abstract
It is critical to monitor the structural evolution of complex fluids for optimal manufacturing performance, including textile spinning. However, in situ measurements in a textile-spinning process suffer from the paucity of non-destructive instruments and interpretations of the measured data. In this work, kinetic and rheo-optic properties of a cellulose/ionic liquid solution are measured simultaneously while fibers are regenerated in aqueous media from a model wet-spinning process via a customized polarized microscope. This system enables to capture key geometrical and structural information of the fiber under spinning at varying draw ratios and residence time, including the flow kinematics extracted from feature tracking, and the flow-induced morphology and birefringent responses. A physics-oriented rheological model is applied to connect the kinematic and structural measurements in a wet-spinning process incorporating both shear and extensional flows. The birefringent responses of fibers under coagulation are compared with an orientation factor incorporated in the constitutive model, from which a superposed structure-optic relationship under varying spinning conditions is identified. Such structural characterizations inferred from the flow dynamics of spinning dopes exhibit strong connections with the mechanical properties of the fully-regenerated fibers, thus enabling to predict the spinning performance in a non-destructive protocol.
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Affiliation(s)
- Jianyi Du
- Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Javier Páez
- Department of Chemical Engineering, University of Vigo, Vigo 36210, Spain
| | - Pablo Otero
- Department of Chemical Engineering, University of Vigo, Vigo 36210, Spain
| | - Pablo B Sánchez
- Department of Chemical Engineering, University of Vigo, Vigo 36210, Spain.
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7
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Ilyin SO, Kostyuk AV, Anokhina TS, Melekhina VY, Bakhtin DS, Antonov SV, Volkov AV. The Effect of Non-Solvent Nature on the Rheological Properties of Cellulose Solution in Diluted Ionic Liquid and Performance of Nanofiltration Membranes. Int J Mol Sci 2023; 24:ijms24098057. [PMID: 37175771 PMCID: PMC10178530 DOI: 10.3390/ijms24098057] [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: 03/31/2023] [Revised: 04/14/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
The weak point of ionic liquids is their high viscosity, limiting the maximum polymer concentration in the forming solutions. A low-viscous co-solvent can reduce viscosity, but cellulose has none. This study demonstrates that dimethyl sulfoxide (DMSO), being non-solvent for cellulose, can act as a nominal co-solvent to improve its processing into a nanofiltration membrane by phase inversion. A study of the rheology of cellulose solutions in diluted ionic liquids ([EMIM]Ac, [EMIM]Cl, and [BMIM]Ac) containing up to 75% DMSO showed the possibility of decreasing the viscosity by up to 50 times while keeping the same cellulose concentration. Surprisingly, typical cellulose non-solvents (water, methanol, ethanol, and isopropanol) behave similarly, reducing the viscosity at low doses but causing structuring of the cellulose solution and its phase separation at high concentrations. According to laser interferometry, the nature of these non-solvents affects the mass transfer direction relative to the forming membrane and the substance interdiffusion rate, which increases by four-fold when passing from isopropanol to methanol or water. Examination of the nanofiltration characteristics of the obtained membranes showed that the dilution of ionic liquid enhances the rejection without changing the permeability, while the transition to alcohols increases the permeability while maintaining the rejection.
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Affiliation(s)
- Sergey O Ilyin
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Anna V Kostyuk
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Tatyana S Anokhina
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Viktoria Y Melekhina
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Danila S Bakhtin
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Sergey V Antonov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
| | - Alexey V Volkov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia
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8
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Extensional Rheology of Hydrophobically Associating Polyacrylamide Solution Used in Chemical Flooding: Effects of Temperature, NaCl and Surfactant. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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9
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Environmental parameters-dependent rheological behaviors of whey protein fibril dispersions: Shear and extensional flow behaviors. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Kongjaroen A, Methacanon P, Seetapan N, Fuongfuchat A, Gamonpilas C, Nishinari K. Effects of dispersing media on the shear and extensional rheology of xanthan gum and guar gum-based thickeners used for dysphagia management. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Calabrese V, György C, Haward SJ, Neal TJ, Armes SP, Shen AQ. Microstructural Dynamics and Rheology of Worm-like Diblock Copolymer Nanoparticle Dispersions under a Simple Shear and a Planar Extensional Flow. Macromolecules 2022; 55:10031-10042. [DOI: 10.1021/acs.macromol.2c01314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/27/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Vincenzo Calabrese
- Okinawa Institute of Science and Technology, Onna-son, Okinawa 904-0495, Japan
| | - Csilla György
- Dainton Building, Department of Chemistry, The University of Sheffield, Sheffield, South Yorkshire S3 7HF, U.K
| | - Simon J. Haward
- Okinawa Institute of Science and Technology, Onna-son, Okinawa 904-0495, Japan
| | - Thomas J. Neal
- Dainton Building, Department of Chemistry, The University of Sheffield, Sheffield, South Yorkshire S3 7HF, U.K
| | - Steven P. Armes
- Dainton Building, Department of Chemistry, The University of Sheffield, Sheffield, South Yorkshire S3 7HF, U.K
| | - Amy Q. Shen
- Okinawa Institute of Science and Technology, Onna-son, Okinawa 904-0495, Japan
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12
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Effect of Microwave Plasma Pre-Treatment on Cotton Cellulose Dissolution. Molecules 2022; 27:molecules27207007. [PMID: 36296604 PMCID: PMC9612156 DOI: 10.3390/molecules27207007] [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: 09/15/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/29/2022] Open
Abstract
The utilization of cellulose to its full potential is constrained by its recalcitrance to dissolution resulting from the rigidity of polymeric chains, high crystallinity, high molecular weight, and extensive intra- and intermolecular hydrogen bonding network. Therefore, pretreatment of cellulose is usually considered as a step that can help facilitate its dissolution. We investigated the use of microwave oxygen plasma as a pre-treatment strategy to enhance the dissolution of cotton fibers in aqueous NaOH/Urea solution, which is considered to be a greener solvent system compared to others. Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, and Powder X-ray Diffraction analyses revealed that plasma pretreatment of cotton cellulose leads to physicochemical changes of cotton fibers. Pretreatment of cotton cellulose with oxygen plasma for 20 and 40 min resulted in the reduction of the molecular weight of cellulose by 36% and 60% and crystallinity by 16% and 25%, respectively. This reduction in molecular weight and crystallinity led to a 34% and 68% increase in the dissolution of 1% (w/v) cotton cellulose in NaOH/Urea solvent system. Thus, treating cotton cellulose with microwave oxygen plasma alters its physicochemical properties and enhanced its dissolution.
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13
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Jimenez LN, Martínez Narváez CDV, Sharma V. Solvent Properties Influence the Rheology and Pinching Dynamics of Polyelectrolyte Solutions: Thickening the Pot with Glycerol and Cellulose Gum. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Leidy Nallely Jimenez
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | | | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
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14
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Bastida GA, Schnell CN, Mocchiutti P, Solier YN, Inalbon MC, Zanuttini MÁ, Galván MV. Effect of Oxalic Acid Concentration and Different Mechanical Pre-Treatments on the Production of Cellulose Micro/Nanofibers. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2908. [PMID: 36079947 PMCID: PMC9457602 DOI: 10.3390/nano12172908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The present work analyzes the effect of process variables and the method of characterization of cellulose micro/nanofibers (CMNFs) obtained by different treatments. A chemical pre-treatment was performed using oxalic acid at 25 wt.% and 50 wt.%. Moreover, for mechanical pre-treatments, a rotary homogenizer or a PFI mill refiner were considered. For the mechanical fibrillation to obtain CMNFs, 5 and 15 passes through a pressurized homogenization were considered. The best results of nanofibrillation yield (76.5%), transmittance (72.1%) and surface charges (71.0 µeq/g CMNF) were obtained using the PFI mill refiner, 50 wt.% oxalic acid and 15 passes. Nevertheless, the highest aspect ratio (length/diameter) determined by Transmission Electron Microscopy (TEM) was found using the PFI mill refiner and 25 wt.% oxalic acid treatment. The aspect ratio was related to the gel point and intrinsic viscosity of CMNF suspensions. The values estimated for gel point agree with those determined by TEM. Moreover, a strong relationship between the intrinsic viscosity [η] of the CMNF dispersions and the corresponding aspect ratio (p) was found (ρ[η] = 0.014 p2.3, R2 = 0.99). Finally, the tensile strength of films obtained from CMNF suspensions was more influenced by the nanofibrillation yield than their aspect ratio.
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15
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Grosskopf AK, Mann JL, Baillet J, Lopez Hernandez H, Autzen AAA, Yu AC, Appel EA. Extreme Extensibility in Physically Cross-Linked Nanocomposite Hydrogels Leveraging Dynamic Polymer–Nanoparticle Interactions. Macromolecules 2022; 55:7498-7511. [PMID: 36118599 PMCID: PMC9476865 DOI: 10.1021/acs.macromol.2c00649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/02/2022] [Indexed: 11/28/2022]
Abstract
![]()
Designing yield stress fluids to exhibit desired functional
properties
is an integral challenge in many applications such as 3D printing,
drilling, food formulation, fiber spinning, adhesives, and injectable
biomaterials. Extensibility in particular has been found to be a highly
beneficial characteristic for materials in these applications; however,
few highly extensible, high water content materials have been reported
to date. Herein we engineer a class of high water content nanocomposite
hydrogel materials leveraging multivalent, noncovalent, polymer–nanoparticle
(PNP) interactions between modified cellulose polymers and biodegradable
nanoparticles. We show that modulation of the chemical composition
of the PNP hydrogels controls the dynamic cross-linking interactions
within the polymer network and directly impacts yielding and viscoelastic
responses. These materials can be engineered to stretch up to 2000%
strain and occupy an unprecedented property regime for extensible
yield stress fluids. Moreover, a dimensional analysis of the relationships
between extensibility and the relaxation and recovery time scales
of these nanocomposite hydrogels uncovers generalizable design criteria
that will be critical for future development of extensible materials.
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Affiliation(s)
- Abigail K. Grosskopf
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Joseph L. Mann
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Julie Baillet
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- CNRS, Bordeaux INP, LCPO, University of Bordeaux, Pessac 33600, France
| | - Hector Lopez Hernandez
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Anton A. A. Autzen
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- Department of Health Technology, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Anthony C. Yu
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Eric A. Appel
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- Department of Bioengineering, Stanford University, Stanford, California 94305, United States
- Department of Pediatrics- Endocrinology, Stanford University, Stanford, California 94305, United States
- ChEM-H Institute, Stanford University, Stanford, California 94305, United States
- Woods Institute for the Environment, Stanford University, Stanford, California 94305, United States
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16
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Ionic liquid as dual-function catalyst and solvent for efficient synthesis of sucrose fatty acid esters. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Owens CE, Du J, Sánchez PB. Understanding the Dynamics of Cellulose Dissolved in an Ionic Liquid Solvent Under Shear and Extensional Flows. Biomacromolecules 2022; 23:1958-1969. [PMID: 35442676 DOI: 10.1021/acs.biomac.1c01623] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ionic liquids (ILs) hold great potential as solvents to dissolve, recycle, and regenerate cellulosic fabrics, but the dissolved cellulose material system requires greater study in conditions relevant to fiber spinning processes, especially characterization of nonlinear shear and extensional flows. To address this gap, we aimed to disentangle the effects of the temperature, cellulose concentration, and degree of polymerization (DOP) on the shear and extensional flows of cellulose dissolved in an IL. We have studied the behavior of cellulose from two sources, fabric and filter paper, dissolved in 1-ethyl-3-methylimidazolium acetate ([C2C1Im][OAc]) over a range of temperatures (25 to 80 °C) and concentrations (up to 4%) that cover both semidilute and entangled regimes. The linear viscoelastic (LVE) response was measured using small-amplitude oscillatory shear techniques, and the results were unified by reducing the temperature, concentration, and DOP onto a single master curve using time superposition techniques. The shear rheological data were further fitted to a fractional Maxwell liquid (FML) model and were found to satisfy the Cox-Merz rule within the measurement range. Meanwhile, the material response in the non-LVE (NLVE) regime at large strains and strain rates has special relevance for spinning processes. We quantified the NLVE behavior using steady shear flow tests alongside uniaxial extension using a customized capillary breakup extensional rheometer. The results for both shear and extensional NLVE responses were described by the Rolie-Poly model to account for flow-dependent relaxation times and nonmonotonic viscosity evolution with strain rates in an extensional flow, which primarily arise from complex polymer interactions at high concentrations. The physically interpretable model fitting parameters were further compared to describe differences in material response to different flow types at varying temperatures, concentrations, and DOP. Finally, the fitting parameters from the FML and Rolie-Poly models were connected under the same superposition framework to provide a comprehensive description within the wide measured parameter window for the flow and handling of cellulose in [C2C1Im][OAc] in both linear and nonlinear regimes.
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Affiliation(s)
- Crystal E Owens
- Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jianyi Du
- Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Pablo B Sánchez
- Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.,Applied Physics Department, Experimental Science Building,Universidade de Vigo, 36310 Vigo, Spain
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18
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On the assessment of shear and extensional rheology of thickened liquids from commercial gum-based thickeners used in dysphagia management. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2021.110820] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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19
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Merchiers J, Reddy NK, Sharma V. Extensibility-Enriched Spinnability and Enhanced Sorption and Strength of Centrifugally Spun Polystyrene Fiber Mats. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jorgo Merchiers
- Institute for Materials research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Naveen K. Reddy
- Institute for Materials research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois Chicago, Chicago, Illinois 60607, United States
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20
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Azad MS, Trivedi JJ. Synergistic Behavior of Anionic Surfactants and Hydrolyzed Polyacrylamide under an Extensional Field: Effect of Hydrophobicity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13645-13653. [PMID: 34753288 DOI: 10.1021/acs.langmuir.1c02244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Surfactant-polymer interaction has been studied by many academic and industrial researchers. Associative polymers have attracted attention, especially in enhanced oil recovery due to their ability to generate higher resistance than parental polyacrylamide (HPAM) at a lower concentration. The effect of hydrophobicity on the associative polymer-surfactant interaction has been studied through many means including rheology. Previous rheological studies were restricted to shear-based behavior, and no efforts were undertaken to study the effect of hydrophobicity on the extensional rheological behavior of the surfactant-HPAM system. In this work, the extensional behavior of anionic surfactant-polyacrylamide systems was studied for varying levels of hydrophobicity. The concentration of the surfactant used in the surfactant-polymer formulation ranged from 0 to 0.3%, and the polymer concentration was fixed at 1000 ppm. Extensional rheology was performed using a capillary breakup extensional rheometer. Surface tension studies were also conducted. The results revealed that the parental HPAM-surfactant system shows the maximum extensional viscosity for the concentration range studied here. This is contrary to shear behavior reported in the literature, and it appears that electrostatic repulsive interaction associated with HPAM-surfactant systems becomes dominant in the extensional field. Associative polymer-surfactant systems characterized by higher hydrophobicity showed the least maximum extensional viscosity, as opposed to the literature-reported behavior in the shear field. Hydrophobic interaction associated with associative polymer-surfactant systems appears to become weaker in the extensional field.
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Affiliation(s)
- Madhar Sahib Azad
- Department of Petroleum Engineering, College of Petroleum and Geosciences, KFUPM, Dhahran 31261, Saudi Arabia
| | - Japan J Trivedi
- School of Mining and Petroleum, Department of Civil and Environmental Engineering, University of Alberta, 9211-116 street, Edmonton, Alberta T6G2H5, Canada
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21
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Merchiers J, Martínez Narváez CDV, Slykas C, Reddy NK, Sharma V. Evaporation and Rheology Chart the Processability Map for Centrifugal Force Spinning. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01799] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jorgo Merchiers
- Institute for Materials Research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw−Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | | | - Cheryl Slykas
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
| | - Naveen K. Reddy
- Institute for Materials Research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw−Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
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22
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Aghmih K, Wakrim H, Boukhriss A, El Bouchti M, Majid S, Gmouh S. Rheological study of microcrystalline cellulose/pyridinium-based ionic liquids solutions. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03917-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Merchiers J, Martínez Narváez CDV, Slykas C, Buntinx M, Deferme W, D'Haen J, Peeters R, Sharma V, Reddy NK. Centrifugally spun poly(ethylene oxide) fibers rival the properties of electrospun fibers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210424] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jorgo Merchiers
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
| | | | - Cheryl Slykas
- Department of Chemical Engineering University of Illinois at Chicago Chicago Illinois 60608 USA
| | - Mieke Buntinx
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
| | - Wim Deferme
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
| | - Jan D'Haen
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
| | - Roos Peeters
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
| | - Vivek Sharma
- Department of Chemical Engineering University of Illinois at Chicago Chicago Illinois 60608 USA
| | - Naveen K. Reddy
- Institute for Materials Research (IMO‐IMOMEC), Hasselt University Diepenbeek Belgium
- IMEC vzw Division IMOMEC Diepenbeek Belgium
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24
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Lefroy KS, Murray BS, Ries ME. Rheological and NMR Studies of Cellulose Dissolution in the Ionic Liquid BmimAc. J Phys Chem B 2021; 125:8205-8218. [PMID: 34279933 DOI: 10.1021/acs.jpcb.1c02848] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Solutions of two types of cellulose in the ionic liquid 1-butyl-3-methyl-imidazolium acetate (BmimAc) have been analyzed using rheology and fast-field cycling nuclear magnetic resonance (NMR) spectroscopy, in order to analyze the macroscopic (bulk) and microscopic environments, respectively. The degree of polymerization (DP) was observed to have a significant effect on both the overlap (c*) and entanglement (ce) concentrations and the intrinsic viscosity ([η]). For microcrystalline cellulose (MCC)/BmimAc solutions, [η] = 116 mL g-1, which is comparable to that of MCC/1-ethyl-3-methyl-imidazolium acetate (EmimAc) solutions, while [η] = 350 mL g-1 for the commercial cellulose (higher DP). Self-diffusion coefficients (D) obtained via the model-independent approach were found to decrease with cellulose concentration and increase with temperature, which can in part be explained by the changes in viscosity; however, ion interactions on a local level are also important. Both Stokes-Einstein and Stokes-Einstein-Debye analyses were carried out to directly compare rheological and relaxometry analyses. It was found that polymer entanglements affect the microscopic environment to a much lesser extent than for the macroscopic environment. Finally, the temperature dependencies of η, D, and relaxation time (T1) could be well described by Arrhenius relationships, and thus, activation energies (Ea) for flow, diffusion, and relaxation were determined. We demonstrate that temperature and cellulose concentration have different effects on short- and long-range interactions.
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Affiliation(s)
- Katherine S Lefroy
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | - Brent S Murray
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | - Michael E Ries
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, U.K
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Electrohydrodynamic Processing of PVP-Doped Kraft Lignin Micro- and Nano-Structures and Application of Electrospun Nanofiber Templates to Produce Oleogels. Polymers (Basel) 2021; 13:polym13132206. [PMID: 34279350 PMCID: PMC8271476 DOI: 10.3390/polym13132206] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/23/2021] [Accepted: 06/28/2021] [Indexed: 11/17/2022] Open
Abstract
The present work focuses on the development of lignin micro- and nano-structures obtained by means of electrohydrodynamic techniques aimed to be potentially applicable as thickening or structuring agents in vegetable oils. The micro- and nano-structures used were mainly composed of eucalyptus kraft lignin (EKL), which were doped to some extent with polyvinylpyrrolidone (PVP). EKL/PVP solutions were prepared at different concentrations (10–40 wt.%) and EKL:PVP ratios (95:5–100:0) in N, N-dimethylformamide (DMF) and further physico-chemically and rheologically characterized. Electrosprayed micro-sized particles were obtained from solutions with low EKL/PVP concentrations (10 and 20 wt.%) and/or high EKL:PVP ratios, whereas beaded nanofiber mats were produced by increasing the solution concentration and/or decreasing EKL:PVP ratio, as a consequence of improved extensional viscoelastic properties. EKL/PVP electrospun nanofibers were able to form oleogels by simply dispersing them into castor oil at nanofiber concentrations higher than 15 wt.%. The rheological properties of these oleogels were assessed by means of small-amplitude oscillatory shear (SAOS) and viscous flow tests. The values of SAOS functions and viscosity depended on both the nanofiber concentration and the morphology of nanofiber templates and resemble those exhibited by commercial lubricating greases made from traditional metallic soaps and mineral oils.
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Jimenez LN, Martínez Narváez CDV, Xu C, Bacchi S, Sharma V. The rheologically-complex fluid beauty of nail lacquer formulations. SOFT MATTER 2021; 17:5197-5213. [PMID: 33942820 DOI: 10.1039/d0sm02248a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nail lacquer formulations are multi-ingredient complex fluids with additives that affect color, smell, texture, evaporation rate, viscosity, stability, leveling behavior, consumer's sensory experience, and dried coating's decorative and wear performance. Optimizing and characterizing the formulation rheology is critical for achieving longer shelf-life, better control over the nail painting process and adhesion, continuous manufacturing of large product volumes, and increasing overall consumer satisfaction. Dispensing, bottle filling, brush application, and dripping, as well as perceived tackiness of nail polishes, all involve capillarity-driven pinching flows associated with strong extensional deformation fields. However, a significant lack of characterization of pinching dynamics and extensional rheology response of multicomponent formulations, especially particle suspensions in viscoelastic solutions, motivates this study. Here, we characterize the shear rheology response of twelve commercial nail lacquer formulations using torsional rheometry and characterize pinching dynamics and extensional rheology response using dripping-onto-substrate (DoS) rheometry protocols we developed. We visualize and analyze brush loading, nail coating, dripping from brush, sagging, and lacquer application on a nail to outline the challenges posed by free-surface flows and non-Newtonian rheology. We find that the radius evolution over time obtained using DoS rheometry displays power law exponents distinct from those exhibited in shear thinning. Both shear and extensional viscosity decrease with deformation rate. However, the extensional viscosity appears to be rate-independent at the highest rates and displays nearly an order of magnitude larger values than the high shear rate viscosity. We envision that the findings and protocols described here will help and motivate industrial scientists to design better multicomponent formulations through a better characterization and understanding of the influence of ingredients like particles and polymers on rheology, processing, and applications.
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Affiliation(s)
- Leidy Nallely Jimenez
- Department of Chemical Engineering, University of Illinois at Chicago, IL 60608, USA.
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28
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Bengtsson J, Jedvert K, Köhnke T, Theliander H. The challenge of predicting spinnability: Investigating benefits of adding lignin to cellulose solutions in air‐gap spinning. J Appl Polym Sci 2021. [DOI: 10.1002/app.50629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jenny Bengtsson
- Fiber Development RISE Research Institutes of Sweden Mölndal Sweden
- Division of Forest Products and Chemical Engineering, Department of Chemistry and Chemical Engineering Chalmers University of Technology Göteborg Sweden
| | - Kerstin Jedvert
- Fiber Development RISE Research Institutes of Sweden Mölndal Sweden
| | - Tobias Köhnke
- Fiber Development RISE Research Institutes of Sweden Mölndal Sweden
| | - Hans Theliander
- Division of Forest Products and Chemical Engineering, Department of Chemistry and Chemical Engineering Chalmers University of Technology Göteborg Sweden
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29
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Dinic J, Sharma V. Flexibility, Extensibility, and Ratio of Kuhn Length to Packing Length Govern the Pinching Dynamics, Coil-Stretch Transition, and Rheology of Polymer Solutions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00076] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jelena Dinic
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
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30
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Zhang L, Pang L, Zhu S, Ma J, Li R, Liu Y, Zhu L, Zhuang X, Zhi W, Yu X, Du L, Zuo H, Jin Y. Intranasal tetrandrine temperature-sensitive in situ hydrogels for the treatment of microwave-induced brain injury. Int J Pharm 2020; 583:119384. [PMID: 32371003 DOI: 10.1016/j.ijpharm.2020.119384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/13/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022]
Abstract
The brain is the most sensitive organ to microwave radiation. However, few effective drugs are available for the treatment of microwave-induced brain injury due to the poor drug permeation into the brain. Here, intranasal tetrandrine (TET) temperature-sensitive in situ hydrogels (ISGs) were prepared with poloxamers 407 and 188. Its characteristics were evaluated, including rheological properties, drug release in vitro, and mucosal irritation. The pharmacodynamics and brain-targeting effects were also studied. The highly viscous ISGs remained in the nasal cavity for a long time with the sustained release of TET and no obvious ciliary toxicity. Intranasal temperature-sensitive TET ISGs markedly improved the spatial memory and spontaneous exploratory behavior induced by microwave with the Morris water maze (MWM) and the open field test (OFT) compared to the model. The ISGs alleviated the microwave-induced brain damage and inhibited the certain mRNA expressions of calcium channels in the brain. Intranasal temperature-sensitive TET ISGs was rapidly absorbed with a shorter Tmax (4.8 h) compared to that of oral TET (8.4 h). The brain targeting index of intranasal temperature-sensitive TET ISGs was as 2.26 times as that of the oral TET. Intranasal temperature-sensitive TET ISGs are a promising brain-targeted medication for the treatment of microwave-induced brain injury.
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Affiliation(s)
- Lihua Zhang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lulu Pang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Siqing Zhu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; Anhui Medical University, Hefei 230032, China
| | - Jinqiu Ma
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Ruiteng Li
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yijing Liu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lin Zhu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiaomei Zhuang
- Beijing Institute of Toxicology and Pharmacology, No. 27, Taiping Road, Beijing 100850, China
| | - Weijia Zhi
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiang Yu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Lina Du
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; Anhui Medical University, Hefei 230032, China.
| | - Hongyan Zuo
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Yiguang Jin
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; Anhui Medical University, Hefei 230032, China; Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China.
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31
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Dinic J, Sharma V. Power Laws Dominate Shear and Extensional Rheology Response and Capillarity-Driven Pinching Dynamics of Entangled Hydroxyethyl Cellulose (HEC) Solutions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00077] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jelena Dinic
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, 60608 Illinois, United States
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, 60608 Illinois, United States
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Scaling laws of entangled polysaccharides. Carbohydr Polym 2020; 234:115886. [DOI: 10.1016/j.carbpol.2020.115886] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 11/24/2022]
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Merchiers J, Meurs W, Deferme W, Peeters R, Buntinx M, Reddy NK. Influence of Polymer Concentration and Nozzle Material on Centrifugal Fiber Spinning. Polymers (Basel) 2020; 12:E575. [PMID: 32150836 PMCID: PMC7182933 DOI: 10.3390/polym12030575] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 11/17/2022] Open
Abstract
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine fiber mats. Due to its high production rate, it could provide a more technologically relevant fiber spinning technique than electrospinning. In this contribution, we examine the influence of polymer concentration and nozzle material on the centrifugal spinning process and the fiber morphology. We find that increasing the polymer concentration transforms the process from a beaded-fiber regime to a continuous-fiber regime. Furthermore, we find that not only fiber diameter is strongly concentration-dependent, but also the nozzle material plays a significant role, especially in the continuous-fiber regime. This was evaluated by the use of a polytetrafluoroethylene (PTFE) and an aluminum nozzle. We discuss the influence of polymer concentration on fiber morphology and show that the choice of nozzle material has a significant influence on the fiber diameter.
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Affiliation(s)
- Jorgo Merchiers
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Willem Meurs
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Wim Deferme
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Roos Peeters
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Mieke Buntinx
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Naveen K. Reddy
- Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium; (J.M.); (W.M.); (W.D.); (R.P.); (M.B.)
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
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34
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Affiliation(s)
- Vasiliki Evageliou
- Food Science and Human Nutrition Agricultural University of Athens 75 Iera Odos 11855 Athens Greece
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35
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Albornoz-Palma G, Betancourt F, Mendonça RT, Chinga-Carrasco G, Pereira M. Relationship between rheological and morphological characteristics of cellulose nanofibrils in dilute dispersions. Carbohydr Polym 2020; 230:115588. [DOI: 10.1016/j.carbpol.2019.115588] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 01/03/2023]
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36
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Utomo NW, Saifuddin I, Nazari B, Jain P, Colby RH. Chain dynamics and glass transition of dry native cellulose solutions in ionic liquids. SOFT MATTER 2020; 16:200-207. [PMID: 31774426 DOI: 10.1039/c9sm01587f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Dry native cellulose solutions in 1-butyl-3-methylimidazolium methylphosphonate (EMImMPO3H), 1-butyl-3-methylimidazolium acetate (EMImAc), and 1-butyl-3-methylimidazolium chloride (BMImCl) ionic liquids (IL) were investigated using subambient linear viscoelastic oscillatory shear. Glass transition temperatures (Tg) of solutions with various cellulose concentrations up to 8.0 wt% were observed as the peaks of loss tangent tan(δ) and loss modulus G'' in descending temperature sweeps at 1 rad s-1. Cellulose/IL solutions showed a minimum in Tg at ∼2.0 wt% cellulose content before increasing with cellulose concentration, suggesting a perturbation of the strongly structured IL solvents by the cellulose chains. Isothermal frequency sweeps in the vicinity of Tg were used to construct time-temperature-superposition master curves. The angular frequency shift factor aT as a function of temperature indicates Arrhenius behavior within a 9 K range near Tg, allowing calculation of fragility, which was found to be constant up to 8.0 wt% cellulose concentration. This result implied that increasing cellulose concentration initially decreases Tg due to disrupted ionic regularity of ILs, but does not seem to change their fragility.
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Affiliation(s)
- Nyalaliska W Utomo
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Indira Saifuddin
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Behzad Nazari
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Preet Jain
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Ralph H Colby
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
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Różańska S, Verbeke K, Różański J, Clasen C, Wagner P. Capillary breakup extensional rheometry of sodium carboxymethylcellulose solutions in water and propylene glycol/water mixtures. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/polb.24900] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sylwia Różańska
- Department of Chemical Engineering and Equipment, Faculty of Chemical TechnologyPoznan University of Technology Berdychowo 4, PL 61‐131 Poznan Poland
| | - Karel Verbeke
- Department of Chemical EngineeringKU Leuven Celestijnenlaan 200 F, 3001 Leuven Belgium
| | - Jacek Różański
- Department of Chemical Engineering and Equipment, Faculty of Chemical TechnologyPoznan University of Technology Berdychowo 4, PL 61‐131 Poznan Poland
| | - Christian Clasen
- Department of Chemical EngineeringKU Leuven Celestijnenlaan 200 F, 3001 Leuven Belgium
| | - Patrycja Wagner
- Department of Chemical Engineering and Equipment, Faculty of Chemical TechnologyPoznan University of Technology Berdychowo 4, PL 61‐131 Poznan Poland
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Zhang L, Shi W, Wang J, Jin L, Hu G, Zheng Q, Xie H, Chen P. Unique gelation and rheological properties of the cellulose/CO 2-based reversible ionic liquid/DMSO solutions. Carbohydr Polym 2019; 222:115024. [PMID: 31320088 DOI: 10.1016/j.carbpol.2019.115024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 11/28/2022]
Abstract
Gelation and rheological behaviors of cellulose/CO2-based reversible ionic liquid (RIL)/DMSO solutions were investigated. The exponents of specific viscosity ηsp versus concentration c were determined for wood pulp (WP) and microcrystalline cellulose (MCC) solutions. The complex viscosity acquired using oscillatory shear closely follows the steady shear viscosity, thus revealing the applicability of Cox-Merz rule. The influence of RIL content in the solvent on apparent viscosities, activation energy, intrinsic viscosities, specific viscosity-c[η] master curve, and relaxation time were also investigated. Gelation occurred in this cellulose solution system due to thermal-induced CO2 release from the decomposition of the CO2-based reversible ionic liquid. The formed gel was stable in air, but re-dissolved when exposed to CO2, indicating the switch-on and switch-off effects of CO2 in cellulose dissolution and gelation.
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Affiliation(s)
- Lihua Zhang
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Wentao Shi
- Zhejiang Key Laboratory of Bio-Based Polymeric Materials Technology and Application, Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering (NIMTE), CAS, Ningbo, 315201, China
| | - Junqin Wang
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Longming Jin
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Gang Hu
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Qiang Zheng
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Haibo Xie
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China.
| | - Peng Chen
- Zhejiang Key Laboratory of Bio-Based Polymeric Materials Technology and Application, Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering (NIMTE), CAS, Ningbo, 315201, China.
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Song M, Hu D, Zheng X, Wang L, Yu Z, An W, Na R, Li C, Li N, Lu Z, Dong Z, Wang Y, Jiang L. Enhancing Droplet Deposition on Wired and Curved Superhydrophobic Leaves. ACS NANO 2019; 13:7966-7974. [PMID: 31268304 DOI: 10.1021/acsnano.9b02457] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Droplet deposition on superhydrophobic surfaces has been a great challenge owing to the shortness of the impact contact time. Despite recent research progress regarding flat superhydrophobic surfaces, improving deposition on ubiquitous wired and curved superhydrophobic leaves remains challenging as their surface structures promote asymmetric impacts, thereby shortening the contact times and increasing the likelihood of droplet splitting. Here, we propose a strategy to solve the deposition problems based on an analysis of the impact dynamics and a rational selection of additives. Combining the prominent extension property of flexible polymers with surface tension reduction of the surfactant, the well-chosen binary additives cooperatively solve retention and coverage problems by limiting the fragment and enhancing local pinning and wetting processes at a very low usage. This work advances the understanding of droplet deposition by rationally selecting additives based on the impact dynamics, which is believed to be useful in a variety of spraying, coating, and printing applications.
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Affiliation(s)
- Meirong Song
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Duan Hu
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Xianfu Zheng
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Lixia Wang
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Zhilun Yu
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Wankai An
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Risong Na
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Chuxin Li
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Future Technology College , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Ning Li
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Future Technology College , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Zhouhui Lu
- College of Science , Henan Agricultural University , Zhengzhou , Henan 450002 , P.R. China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Future Technology College , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Yilin Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Future Technology College , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190 , P.R. China
- School of Chemistry , Beihang University , Beijing 100191 , P.R. China
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Li J, Zhang X, Zhang J, Mi Q, Jia F, Wu J, Yu J, Zhang J. Direct and complete utilization of agricultural straw to fabricate all-biomass films with high-strength, high-haze and UV-shielding properties. Carbohydr Polym 2019; 223:115057. [PMID: 31427002 DOI: 10.1016/j.carbpol.2019.115057] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/25/2019] [Accepted: 07/04/2019] [Indexed: 11/25/2022]
Abstract
It is of vital significance to fabricate high-value-added materials from agricultural wastes by environmentally friendly and cost-effective processes. In this work, we propose an approach to directly and completely convert agricultural straw into multifunctional all-biomass films by introducing an entanglement network of additional cellulose to enhance the strength of the regenerated straw. First, natural wheat straw is dissolved in the ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl). Then, a small amount of cellulose with a high degree of polymerization (DP) is introduced to obtain straw/cellulose/AmimCl solutions, which are subsequently soaked in water for biomass regeneration, washed and dried to obtain straw/cellulose films. Dynamic shear rheological test confirms that after adding high-DP cellulose, an enhanced entanglement network forms in the solutions, which is essential to the processing and mechanical properties of materials. Extensional rheological test indicates that straw/cellulose/AmimCl solutions exhibit excellent spinnability and film-forming properties based on a significant increase in the capillary break-up time. Therefore, after regeneration in water, straw-based all-biomass films with high mechanical strength are obtained. When the content of additional wood pulp (WP, DP = 1300) with respect to total solids is 25 wt%, the obtained straw/WP all-biomass film reaches a tensile strength of 62 MPa. More interestingly, because there is no intentional chemical pretreatment and compositional isolation involved in this process, almost all of the components in straw, such as cellulose, lignin, hemicellulose and inorganic compounds, are retained in the final films. Thus, the resultant films have a superhigh haze of 97% while preventing 97% UVA (320-400 nm) and almost 100% UVB (280-320 nm). In sum, we demonstrate the complete and value-added utilization of low-grade bioresources by a facile, green and economical process to fabricate high-strength, high-haze and UV-shielding all-biomass films, which have great potential in low-cost, biodegradable and environmentally friendly packaging.
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Affiliation(s)
- Jinyang Li
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaocheng Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China
| | - Jinming Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing, 101400, China.
| | - Qinyong Mi
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China
| | - Fengwei Jia
- Shandong Henglian New Materials Co., Ltd., Weifang, 261061, Shandong, China
| | - Jin Wu
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing, 101400, China
| | - Jian Yu
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing, 101400, China
| | - Jun Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing, 101400, China.
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41
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Surber G, Jaros D, Rohm H. Shear and extensional rheology of acid milk gel suspensions with varying ropiness. J Texture Stud 2019; 51:111-119. [PMID: 31226221 DOI: 10.1111/jtxs.12458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/05/2019] [Accepted: 06/16/2019] [Indexed: 11/28/2022]
Abstract
Exopolysaccharides (EPS) synthesized by lactic acid bacteria during fermentation significantly affect the rheology of set-style acid milk gels and that of acid gel suspensions, produced from the gels by stirring. In this study, shear and uniaxial extensional flow of acid gel suspensions made with seven single strains of Streptococcus thermophilus or Lactococcus lactis was investigated. Six strains produced ropy EPS, and maximum filament length determined by using a continuous stretching method was up to four times higher than filament length of an EPS-negative control strain. The systems containing ropy EPS showed a different response to shear and extensional deformation. In shear rheology, higher apparent viscosities and an enhanced structural breakdown was observed for acid gel suspensions with more pronounced ropiness. Breakup time and extensional viscosity, determined by using a Capillary Breakup Extensional Rheometer (CaBER™), significantly increased with increasing ropiness. The increase of extensional viscosity with increasing ropiness was, however, much higher than the effects of ropiness on shear viscosity. As relaxation times also depended on ropiness, it is concluded that ropiness is caused by EPS-EPS interactions that can be better discriminated in extensional rheology. PRACTICAL APPLICATIONS: To improve the texture of fermented milk, lactic acid bacteria that are able to produce ropy exopolysaccharides (EPS) are increasingly used in the dairy industry. The EPS exhibit a significant influence on processing properties and sensory characteristics of the resulting products, which can be estimated by means of shear and extensional rheology. The current work provides information on these respective properties of acid gel suspensions, which facilitate product design by supporting the selection of appropriate starter cultures.
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Affiliation(s)
- Georg Surber
- Chair of Food Engineering, Technische Universität Dresden, Dresden, Germany
| | - Doris Jaros
- Chair of Food Engineering, Technische Universität Dresden, Dresden, Germany
| | - Harald Rohm
- Chair of Food Engineering, Technische Universität Dresden, Dresden, Germany
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42
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Biopolymer Solution Evaluation Methodology: Thermal and Mechanical Assessment for Enhanced Oil Recovery with High Salinity Brines. Processes (Basel) 2019. [DOI: 10.3390/pr7060339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The methodology to study an eco-friendly and non-toxic, Schizophyllan, biopolymer for enhanced oil recovery (EOR) polymer flooding is described. The methodology is divided into two parts; the first part estimates the molar concentration of the biopolymer, which is needed to prepare the biopolymer solution with optimal viscosity. This is required to improve the sweep efficiency for the selected reservoir in Kuwait. The second part of this generalized methodology evaluates the biopolymer solution capability to resist degradation and maintain its essential properties with the selected reservoir conditions. The evaluation process includes thermal and mechanical assessment. Furthermore, to study the biopolymer solution behavior in both selected reservoir and extreme conditions, the biopolymer solution samples were prepared using 180 g/L and 309 g/L brine. It was found that the prepared biopolymer solution demonstrated great capability in maintaining its properties; and therefore, can be introduced as a strong candidate for EOR polymer flooding with high salinity brines.
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Liu Z, Wang W, Stadler FJ, Yan ZC. Rheology of Concentrated Polymer/Ionic Liquid Solutions: An Anomalous Plasticizing Effect and a Universality in Nonlinear Shear Rheology. Polymers (Basel) 2019; 11:E877. [PMID: 31091730 PMCID: PMC6572180 DOI: 10.3390/polym11050877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/27/2019] [Accepted: 05/05/2019] [Indexed: 12/17/2022] Open
Abstract
An anomalous plasticizing effect was observed in polymer/ionic liquid (IL) solutions by applying broad range of rheological techniques. Poly(ethylene oxide)(PEO)/IL solutions exhibit stronger dynamic temperature dependence than pure PEO, which is in conflict with the knowledge that lower-Tg solvent increases the fractional free volume. For poly(methy methacrylate)(PMMA)/IL solutions, the subtle anomaly was detected from the fact that the effective glass transition temperature Tg,eff of PMMA in IL is higher than the prediction of the self-concentration model, while in conventional polymer solutions, Tg,eff follows the original Fox equation. Observations in both solutions reveal retarded segmental dynamics, consistent with a recent simulation result (Macromolecules, 2018, 51, 5336) that polymer chains wrap the IL cations by hydrogen bonding interactions and the segmental unwrapping delays their relaxation. Start-up shear and nonlinear stress relaxation tests of polymer/IL solutions follow a universal nonlinear rheological behavior as polymer melts and solutions, indicating that the segment-cation interaction is not strong enough to influence the nonlinear chain orientation and stretch. The present work may arouse the further theoretical, experimental, and simulation interests in interpreting the effect of complex polymer-IL interaction on the dynamics of polymer/IL solutions.
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Affiliation(s)
- Zhonghua Liu
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
| | - Wei Wang
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
| | - Florian J Stadler
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
| | - Zhi-Chao Yan
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
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44
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Dinic J, Sharma V. Macromolecular relaxation, strain, and extensibility determine elastocapillary thinning and extensional viscosity of polymer solutions. Proc Natl Acad Sci U S A 2019; 116:8766-8774. [PMID: 30979802 PMCID: PMC6500132 DOI: 10.1073/pnas.1820277116] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Delayed capillary break-up of viscoelastic filaments presents scientific and technical challenges relevant for drop formation, dispensing, and adhesion in industrial and biological applications. The flow kinematics are primarily dictated by the viscoelastic stresses contributed by the polymers that are stretched and oriented in a strong extensional flow field resulting from the streamwise gradients created by the capillarity-driven squeeze flow. After an initial inertiocapillary (IC) or viscocapillary (VC) regime, where elastic effects seem to play no role, the interplay of capillarity and viscoelasticity can lead to an elastocapillary (EC) response characterized by exponentially-slow thinning of neck radius (extensional relaxation time is determined from the delay constant). Less frequently, a terminal visco-elastocapillary (TVEC) response with linear decay in radius can be observed and used for measuring terminal, steady extensional viscosity. However, both IC/VC-EC and EC-TVEC transitions are inaccessible in devices that create stretched necks by applying a step strain to a liquid bridge (e.g., capillary breakup extensional rheometer). In this study, we use dripping-onto-substrate rheometry to obtain radius evolution data for unentangled polymer solutions. We deduce that the plots of transient extensional viscosity vs. Hencky strain (scaled by the respective values at the EC-TVEC transition) emulate the functional form of the birefringence-macromolecular strain relationship based on Peterlin's theory. We quantify the duration and strain between the IC/VC-EC and the EC-TVEC transitions using measures we term elastocapillary span and elastocapillary strain increment and find both measures show values directly correlated with the corresponding variation in extensional relaxation time.
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Affiliation(s)
- Jelena Dinic
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607
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Bengtsson J, Jedvert K, Köhnke T, Theliander H. Identifying breach mechanism during air‐gap spinning of lignin–cellulose ionic‐liquid solutions. J Appl Polym Sci 2019. [DOI: 10.1002/app.47800] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jenny Bengtsson
- Biobased Fibres, RISE Research Institutes of Sweden, Argongatan 30 431 53 Mölndal Sweden
- Division of Forest Products and Chemical Engineering, Department of Chemistry and Chemical EngineeringChalmers University of Technology, Kemigården 4 412 96 Göteborg Sweden
| | - Kerstin Jedvert
- Biobased Fibres, RISE Research Institutes of Sweden, Argongatan 30 431 53 Mölndal Sweden
| | - Tobias Köhnke
- Biobased Fibres, RISE Research Institutes of Sweden, Argongatan 30 431 53 Mölndal Sweden
| | - Hans Theliander
- Division of Forest Products and Chemical Engineering, Department of Chemistry and Chemical EngineeringChalmers University of Technology, Kemigården 4 412 96 Göteborg Sweden
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46
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Elhamarnah YA, Nasser M, Qiblawey H, Benamor A, Atilhan M, Aparicio S. A comprehensive review on the rheological behavior of imidazolium based ionic liquids and natural deep eutectic solvents. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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47
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Yuan C, Shi W, Chen P, Chen H, Zhang L, Hu G, Jin L, Xie H, Zheng Q, Lu S. Dissolution and transesterification of cellulose in γ-valerolactone promoted by ionic liquids. NEW J CHEM 2019. [DOI: 10.1039/c8nj03505a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquids act as promoters for the dissolution of cellulose in GVL and also as catalysts for cellulose derivatization in GVL, providing a green and effective solvent system for cellulose processing and derivatization.
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48
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Koeppel A, Laity PR, Holland C. Extensional flow behaviour and spinnability of native silk. SOFT MATTER 2018; 14:8838-8845. [PMID: 30349916 DOI: 10.1039/c8sm01199k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Silk fibres are assembled via flow. While changes in the physiological environment of the gland as well as the shear rheology of silk are largely understood, the effect of extensional flow fields on native silk proteins is almost completely unknown. Here we demonstrate that filament stretching on a conventional tensile tester is a suitable technique to assess silk's extensional flow properties and its ability to form fibres under extensional conditions characteristic of natural spinning. We report that native Bombyx mori silk responds differently to extensional flow fields when compared to synthetic linear polymers, as evidenced by a higher Trouton ratio which we attribute to silk's increased interchain interactions. Finally, we show that native silk proteins can only be spun into stable fibres at low extension rates as a result of dehydration, suggesting that extensional fields alone are unable to induce natural fibre formation.
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Affiliation(s)
- Andreas Koeppel
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK.
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49
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Rajeev A, Deshpande AP, Basavaraj MG. Rheology and microstructure of concentrated microcrystalline cellulose (MCC)/1-allyl-3-methylimidazolium chloride (AmimCl)/water mixtures. SOFT MATTER 2018; 14:7615-7624. [PMID: 30159579 DOI: 10.1039/c8sm01448e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Water added to a solution of microcrystalline cellulose (MCC) in 1-allyl-3-methylimidazolium chloride (AmimCl) reduces the solvent quality and causes significant changes in the flow properties and microstructure due to restructuring and aggregation of cellulose molecules. We report an experimental investigation by means of polarization optical microscopy (POM) and rheology of the distinct phases formed in 5-20 wt% MCC/AmimCl solutions due to the addition of water. With increase in the cellulose concentration, the MCC/AmimCl/water mixtures showed different morphologies such as the non-aligned cholesteric liquid crystalline (LC) domain, the coexistence of spherulite-like structures within the LC domain and a space-spanning network of spherulite-like structures at high concentrations of water. In situ microscopy during shear and POM observations pre and post shear revealed a significant increase in the size of the birefringent domains as the shear rate is increased, which continued to exist even after the cessation of shear. With an increase in the concentration of water, the zero shear viscosity of the MCC/AmimCl/water mixtures was found to go through a minimum, beyond which the aggregation of cellulose commenced. The corresponding oscillatory shear response showed a sol-gel transition with an increase in water concentration. Moreover, at high cellulose concentrations (12-20 wt%), the MCC/AmimCl/water gels exhibited self-similarity and followed the Chambon-Winter (CW) criterion. The similar phase behavior and rheological response observed for MCC dissolved in 1-butyl-3 methylimidazolium chloride (BmimCl) indicated the generality of the presented results.
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Affiliation(s)
- Ashna Rajeev
- Polymer Engineering and Colloid Science Laboratory (PECS), Department of Chemical Engineering, Indian Institute of Technology Madras, India.
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50
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Jimenez LN, Dinic J, Parsi N, Sharma V. Extensional Relaxation Time, Pinch-Off Dynamics, and Printability of Semidilute Polyelectrolyte Solutions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00148] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Leidy Nallely Jimenez
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Jelena Dinic
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Nikhila Parsi
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
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