1
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Legrand G, Baeza GP, Peyla M, Porcar L, Fernández-de-Alba C, Manneville S, Divoux T. Acid-Induced Gelation of Carboxymethylcellulose Solutions. ACS Macro Lett 2024:234-239. [PMID: 38301141 DOI: 10.1021/acsmacrolett.3c00677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
The present work offers a comprehensive description of the acid-induced gelation of carboxymethylcellulose (CMC), a water-soluble derivative of cellulose broadly used in numerous applications ranging from food packaging to biomedical engineering. Linear viscoelastic properties measured at various pH and CMC contents allow us to build a sol-gel phase diagram and show that CMC gels exhibit broad power-law viscoelastic spectra that can be rescaled onto a master curve following a time-composition superposition principle. These results demonstrate the microstructural self-similarity of CMC gels and inspire a mean-field model based on hydrophobic interchain association that accounts for the sol-gel boundary over the entire range of CMC content under study. Neutron scattering experiments further confirm this picture and suggest that CMC gels comprise a fibrous network cross-linked by aggregates. Finally, low-field NMR measurements offer an original signature of acid-induced gelation from a solvent perspective. Altogether, these results open avenues for the precise manipulation and control of CMC-based hydrogels.
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Affiliation(s)
| | - Guilhem P Baeza
- Univ Lyon, INSA Lyon, UCBL, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France
| | - Matteo Peyla
- ENSL, CNRS, Laboratoire de Physique, F-69342 Lyon, France
| | | | - Carlos Fernández-de-Alba
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères, Service RMN Polymères de l'ICL, F-69621 Cédex, France
| | - Sébastien Manneville
- ENSL, CNRS, Laboratoire de Physique, F-69342 Lyon, France
- Institut Universitaire de France (IUF), https://www.iufrance.fr/
| | - Thibaut Divoux
- ENSL, CNRS, Laboratoire de Physique, F-69342 Lyon, France
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2
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Bak J, Yoo B. Rheological characteristics of concentrated ternary gum mixtures with xanthan gum, guar gum, and carboxymethyl cellulose: Effect of NaCl, sucrose, pH, and temperature. Int J Biol Macromol 2023; 253:126559. [PMID: 37657581 DOI: 10.1016/j.ijbiomac.2023.126559] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/10/2023] [Accepted: 08/24/2023] [Indexed: 09/03/2023]
Abstract
Our goal was to investigate the effects of various conditions of media (NaCl, sucrose, pH, and temperature) on the steady and dynamic shear rheological properties of a concentrated ternary gum mixture system (1.0 wt%) containing xanthan gum (XG), guar gum (GG), and carboxymethyl cellulose (CMC). Regardless of the media conditions, all gum mixtures exhibited a high shear-thinning behavior with a low flow behavior index (<0.30). NaCl addition resulted in a decrease in the consistency index (K, 32.8-16.1 Pa·sn) and apparent viscosity at 50 s-1 (ηa,50, 1.00-0.75 Pa·s), as well as the elastic modulus (G') and viscous modulus (G″) due to the charge screening effect. Similar result was observed with an increase in acidity of media. The presence of sucrose also induced the decrease in the ηa,50, K, G', and G″ values of the ternary gum, but tan δ (G″/G') decreased, indicative of higher weak gel-like properties. No effect of NaCl or sucrose addition on the temperature dependence of G' values was observed, whereas pH adjustment was impacted. These results demonstrated that the presence of co-solute, the acidity of media, and temperature influenced the rheological properties of ternary gum, and in particular acid condition gave a great impact.
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Affiliation(s)
- J Bak
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, Gyeonggi 410-820, Republic of Korea
| | - B Yoo
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, Gyeonggi 410-820, Republic of Korea.
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3
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Zhao Z, Chen D, Lu M, Lin J, Hou Y, Zhang Q, Li Z, Jiao L, Ye Z, Lu J. Single-Piece Membrane Supercapacitor with Exceptional Areal/Volumetric Capacitance via Double-Face Print of Electrode/Electrolyte Active Ink. SMALL METHODS 2023:e2300178. [PMID: 37129554 DOI: 10.1002/smtd.202300178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/25/2023] [Indexed: 05/03/2023]
Abstract
Single-piece flexible supercapacitors (FSCs) have light and ultrathin superiorities, thereby having great potential in portable/wearable electronics. However, all the available single-piece FSCs are fabricated by in situ growth routes, which are incompatible with large-scale technology. This work designs a carboxymethyl cellulose/phytic acid/polyaniline ink, incorporating electrode with electrolyte active compositions. Based on the electrode/electrolyte active ink, a double-face print technique on mixed cellulose ester and nylon membranes to fabricate single-piece membrane-FSCs, where both sides of membranes can be utilized well, is proposed. Consequently, one FSC is measured to be only ≈0.785 cm2 in area, ≈0.021 g in weight, and ≈200 µm in thickness, while it has exceptional areal and volumetric capacitances up to 757 mF cm-2 and 37.8 F cm-3 , respectively, based on the entire device. It also exhibits high flexibility with a capacitance retention of 98% after 2000 bend cycles from 0° to 180°. The state-of-the-art FSCs are expected to have exciting prospects in portable/wearable electronics, smart reading, and flexible displays. The preparation strategy renders the massive production of large-area and mini-size arrayed FSCs, and also the "do-it-yourself" or homemade preparation, which adds more interest and designability for general users.
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Affiliation(s)
- Zhenyun Zhao
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
- Donghai Laboratory, Zhoushan, 316021, China
| | - Dongliang Chen
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Ming Lu
- College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400716, P. R. China
| | - Jingwen Lin
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Yang Hou
- Donghai Laboratory, Zhoushan, 316021, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Qinghua Zhang
- Donghai Laboratory, Zhoushan, 316021, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Zhongjian Li
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Lei Jiao
- Donghai Laboratory, Zhoushan, 316021, China
- Ocean College, Zhejiang University, Zhoushan, 310621, China
| | - Zhizhen Ye
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Jianguo Lu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
- Donghai Laboratory, Zhoushan, 316021, China
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4
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Madaghiele M, Demitri C, Surano I, Silvestri A, Vitale M, Panteca E, Zohar Y, Rescigno M, Sannino A. Biomimetic cellulose-based superabsorbent hydrogels for treating obesity. Sci Rep 2021; 11:21394. [PMID: 34725434 PMCID: PMC8560814 DOI: 10.1038/s41598-021-00884-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/19/2021] [Indexed: 01/22/2023] Open
Abstract
In the treatment of obesity, nutritional and behavioral modifications are difficult to implement and maintain. Since vegetable consumption is a fundamental part of many dietary interventions and daily nutrient requirements, we developed a novel cellulose-based superabsorbent hydrogel (CB-SAH) platform, inspired by the composition and mechanical properties of raw vegetables, as a mechanobiological therapy. The CB-SAHs properties were studied in a simulated gastrointestinal environment, while their impact on gut tissue was investigated by an ex vivo organ culture (EVOC) model. Functional fibers and raw vegetables were used as reference. CB-SAHs demonstrated orders of magnitude higher elasticity in comparison to the tested functional fibers, however performed similar to the tested raw vegetables. Notably, the biomimetic CB-SAHs with elasticity levels similar to raw vegetables showed benefits in preserving and regulating the gut tissue in the EVOC model. Non-systemic oral mechanotherapeutics based on this technology were advanced through clinical studies, with a first product cleared as an aid for weight management in the US and Europe.
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Affiliation(s)
- Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100, Lecce, Italy.
| | - Christian Demitri
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100, Lecce, Italy
| | - Ivo Surano
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100, Lecce, Italy
| | | | - Milena Vitale
- IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089, Rozzano, Milan, Italy
| | - Eliana Panteca
- Gelesis, Boston, MA, 02116, USA
- Gelesis, Calimera, Lecce, 73021, Italy
| | - Yishai Zohar
- Gelesis, Boston, MA, 02116, USA
- Gelesis, Calimera, Lecce, 73021, Italy
| | - Maria Rescigno
- IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072, Pieve Emanuele, Milan, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100, Lecce, Italy.
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5
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Lopez CG, Richtering W. Oscillatory rheology of carboxymethyl cellulose gels: Influence of concentration and pH. Carbohydr Polym 2021; 267:118117. [PMID: 34119123 DOI: 10.1016/j.carbpol.2021.118117] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/02/2021] [Accepted: 04/18/2021] [Indexed: 11/30/2022]
Abstract
The flow properties of ionic polysaccharides are determined by the interplay of electrostatic and hydrophobic interactions, which depend on the ionic strength and pH of the solvent. We explore the LVE and LAOS rheology of carboxymethyl cellulose (CMC) in aqueous media, focusing on its gelling behaviour. We find that addition of HCl promotes gel formation and addition of NaOH suppresses it. The former effect is interpreted as being caused by a decrease of the charge density of the polymer, which facilitates interchain associations and the later effect can be assigned to solubilisation of cellulose backbone by NaOH. Our results along with a review of the literature allow us to establish the concentration regimes and associated properties of physical gels of carboxymethyl cellulose. At neutral pH, the storage modulus of NaCMC gels of varying molecular weight and DS at a given concentration does not vary by more than a factor 5.
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Affiliation(s)
- Carlos G Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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6
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Saide VGDP, de Oliveira BR, do Nascimento CS, Borges RFDO, Scheid CM, Calçada LA. Influence of solids concentration and solid/polymer interaction on the apparent viscosity of drilling fluids. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2020. [DOI: 10.1007/s43153-020-00072-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Effects of pH control by acid addition at the aqueous processing of cathodes for lithium ion batteries. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.05.141] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Lopez CG. Entanglement Properties of Polyelectrolytes in Salt-Free and Excess-Salt Solutions. ACS Macro Lett 2019; 8:979-983. [PMID: 35619486 DOI: 10.1021/acsmacrolett.9b00161] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We study the entanglement properties of polyelectrolytes in salt-free and excess-salt solutions, corresponding to rod-like and expanded coil conformations, respectively. While the solvent's ionic strength has a large impact on the conformation of polyelectrolytes, it does not affect its entanglement density and entanglement crossover. This contradicts current models of polymer entanglement and suggests that the density of binary contacts in solution is not affected by the solvent quality. Based on this observation, we work out the reptation dynamics of polyelectrolytes in salt-free solution, which differ appreciably from earlier models.
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Affiliation(s)
- Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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9
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Lopez CG, Colby RH, Cabral JT. Electrostatic and Hydrophobic Interactions in NaCMC Aqueous Solutions: Effect of Degree of Substitution. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00178] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlos G. Lopez
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - Ralph H. Colby
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - João T. Cabral
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
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10
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Lopez CG, Colby RH, Graham P, Cabral JT. Viscosity and Scaling of Semiflexible Polyelectrolyte NaCMC in Aqueous Salt Solutions. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02261] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carlos G. Lopez
- Department
of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Ralph H. Colby
- Department
of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Peter Graham
- Unilever Research
Port Sunlight Laboratory, Quarry Road
East, Bebington L63 3JW, United Kingdom
| | - Joao T. Cabral
- Department
of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
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11
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Polylactic Acid Improves the Rheological Properties, and Promotes the Degradation of Sodium Carboxymethyl Cellulose-Modified Alkali-Activated Cement. ENERGIES 2016. [DOI: 10.3390/en9100823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Application of CMC as Thickener on Nanoemulsions Based on Olive Oil: Physical Properties and Stability. INT J POLYM SCI 2016. [DOI: 10.1155/2016/6280581] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Carboxymethyl cellulose (CMC) is a hydrocolloid with surface activity that could act as emulsifiers in oil-in-water emulsions; however the principal role is that it acts as structuring, thickening, or gelling agent in the aqueous phase. This study aims to evaluate the application of CMC as thickener into nanoemulsions based on olive oil and their influence on particle characteristics, flow behavior, and color. Four nanoemulsions with different oil (5% and 15% w/w olive oil) and CMC (0.5% and 0.75% w/w) concentration and two control samples without CMC added were prepared using Tween 80 as emulsifier. All physical properties studied on nanoemulsions were depending on both oil and CMC concentration. In general, z-average particle size varied among 107–121 nm and those samples with 5% oil and CMC were the most polydisperse. The addition of CMC increased anionic charge of nanoemulsions obtaining zeta potential values among −41 and −55 mV. The oil concentration increased both consistency and pseudoplasticity of samples, although samples were more stable to gravitational separation at the highest CMC concentration. Color of nanoemulsions was affected principally by the oil concentration. Finally, the results showed that CMC could be applied in nanoemulsions as thickener increasing their physical stability although modifying their physical properties.
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13
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Sreeremya TS, Prabhakaran M, Ghosh S. Tailoring the surface properties of cerium oxide nanoabrasives through morphology control for glass CMP. RSC Adv 2015. [DOI: 10.1039/c5ra12319d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ceria nanostructures synthesized through simple synthetic protocols showed morphology dependence in the chemical mechanical planarization of glass by virtue of their diverse surface properties.
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Affiliation(s)
- Thadathil S. Sreeremya
- Material Science & Technology Division
- National Institute for Interdisciplinary Science & Technology (NIIST)
- Council of Scientific & Industrial Research (CSIR)
- Trivandrum-695019
- India
| | - Malini Prabhakaran
- Material Science & Technology Division
- National Institute for Interdisciplinary Science & Technology (NIIST)
- Council of Scientific & Industrial Research (CSIR)
- Trivandrum-695019
- India
| | - Swapankumar Ghosh
- Material Science & Technology Division
- National Institute for Interdisciplinary Science & Technology (NIIST)
- Council of Scientific & Industrial Research (CSIR)
- Trivandrum-695019
- India
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14
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Dogsa I, Tomšič M, Orehek J, Benigar E, Jamnik A, Stopar D. Amorphous supramolecular structure of carboxymethyl cellulose in aqueous solution at different pH values as determined by rheology, small angle X-ray and light scattering. Carbohydr Polym 2014; 111:492-504. [DOI: 10.1016/j.carbpol.2014.04.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 03/14/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
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15
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Smooth, stable and optically transparent microcapsules prepared by one-step method using sodium carboxymethyl cellulose as protective colloid. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.06.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Effect of some hydrocolloids blend on viscosity and sensory properties of raspberry juice-milk. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2014; 51:2246-50. [PMID: 25190891 DOI: 10.1007/s13197-012-0705-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/30/2011] [Accepted: 04/09/2012] [Indexed: 10/28/2022]
Abstract
Raspberry juice-milk is an acidic dairy drink (ADD) including two main phases, milk phase (pH: 6.6-6.7) and raspberry juice phase (pH: 3.2 ± 0.1). Due to the low pH in this beverage, milk protein sedimentation is usual problem and therefore hydrocolloid is added as a stabilizer. Thus, in current study the influences of pectin, CMC and Kappa-carrageenan on the stability of the milk-raspberry juice drink and their blend synergistic effect were investigated. For this purpose milk-raspberry juice drink samples were prepared using pure pectin, CMC and Kappa-carrageenan at concentrations of 0.2 %, 0.3 % and 0.35 % respectively. Blends of pectin and Carboxymethylcellulose (ratios of 25:75, 33.4:66.6 and 34.3:65.7) at concentrations of 0.2 %, 0.3 % and 0.35 %, were added during a certain process. Moreover, the stabilization mechanisms were studied using apparent viscosity and sedimentation percent measurements. Based on the findings of the present study, the best fitted samples were the ones containing the blends of pectin and Carboxymethylcellulose which were more stable and viscose than samples including pure Carboxymethylcellulose (P < 0.05). Kappa-carrageenan can not prevent casein agglomeration in raspberry juice-milk individually, but in the presence of CMC or CMC and pectin it produces a stable drink. In general, with utilizing synergistic effect of gum blend we can use lower gum concentration and decrease cost during manufacture.
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17
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Mohan T, Kargl R, Tradt KE, Kulterer MR, Braćić M, Hribernik S, Stana-Kleinschek K, Ribitsch V. Antifouling coating of cellulose acetate thin films with polysaccharide multilayers. Carbohydr Polym 2014; 116:149-58. [PMID: 25458284 DOI: 10.1016/j.carbpol.2014.04.068] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 04/11/2014] [Accepted: 04/15/2014] [Indexed: 11/30/2022]
Abstract
In this investigation, partially deacetylated cellulose acetate (DCA) thin films were prepared and modified with hydrophilic polysaccharides with the layer-by-layer (LbL) technique. As polysaccharides, chitosan (CHI) and carboxymethyl cellulose (CMC) were used. DCA thin films were manufactured by exposing spin coated cellulose acetate to potassium hydroxide solutions for various times. The deacetylation process was monitored by attenuated total reflectance-infrared spectroscopy, film thickness and static water contact angle measurements. A maximum of three bilayers was created from the alternating deposition of CHI and CMC on the DCA films under two different conditions namely constant ionic strengths and varying pH values of the CMC solutions. Precoatings of CMC at pH 2 were used as a base layer. The sequential deposition of CMC and CHI was investigated with a quartz crystal microbalance with dissipation, film thickness, static water contact angle and atomic force microscopy (AFM) measurements. The versatility and applicability of the developed functional coatings was shown by removing the multilayers by rinsing with mixtures containing HCl/NaCl. The developed LbL coatings are used for studying the fouling behavior of bovine serum albumin (BSA).
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Affiliation(s)
- Tamilselvan Mohan
- Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstraße 28, 8010 Graz, Austria.
| | - Rupert Kargl
- Institute for the Engineering and Design of Materials, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia.
| | - Karin Eva Tradt
- Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Martin R Kulterer
- Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Matej Braćić
- Institute for the Engineering and Design of Materials, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
| | - Silvo Hribernik
- Institute for the Engineering and Design of Materials, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
| | - Karin Stana-Kleinschek
- Institute for the Engineering and Design of Materials, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
| | - Volker Ribitsch
- Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstraße 28, 8010 Graz, Austria
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18
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Okubo T, Tsuchida A. Drying dissipative structure of sodium salts of hyaluronic acid. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-013-3082-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Affiliation(s)
- Stephen A. Madison
- Unilever R&D, 40 Merritt Boulevard, Trumbull, Connecticut 06611, United States
| | - Joseph O. Carnali
- Unilever R&D, 40 Merritt Boulevard, Trumbull, Connecticut 06611, United States
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20
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Dilute solution properties of carboxymethyl celluloses of various molecular weights and degrees of substitution. Carbohydr Polym 2013; 99:423-31. [PMID: 24274526 DOI: 10.1016/j.carbpol.2013.08.030] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 08/12/2013] [Accepted: 08/15/2013] [Indexed: 11/21/2022]
Abstract
The intrinsic viscosities of six carboxymethyl celluloses (CMC) of different degrees of substitution, molecular weights, and molecular weight distributions (MWDs) were measured as a function of pH, ionic strength, and temperature. The molecular weights and MWDs were determined by analytical ultracentrifugation. It was demonstrated that the raw viscosity data could be represented by the Fedors equation allowing for accurate determination of the intrinsic viscosity. Ionic strength, rather than pH or temperature had the strongest effect on the conformation of CMC. An estimate of the Mark-Houwink-Kuhn-Sakurada exponent (α=0.83) and calculations of chain flexibility and expansion factors indicated that CMC has semi-flexible, randomly coiling chains in solution with persistence lengths on the order of 8.8-24.5 nm in distilled water and 11.3-14.8 nm in 0.01 mol/L sodium chloride. It was also found that the lowest molecular weight CMC was most flexible among the tested samples.
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21
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Lim S, Ahn KH, Yamamura M. Latex migration in battery slurries during drying. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8233-8244. [PMID: 23745604 DOI: 10.1021/la4013685] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We used real-time fluorescence microscopy to investigate the migration of latex particles in drying battery slurries. The time evolution of the fluorescence signals revealed that the migration of the latex particles was suppressed above the entanglement concentration of carboxymethyl cellulose (CMC), while it was significantly enhanced when CMC fully covered the surfaces of the graphite particles. In particular, a two-step migration was observed when the graphite particles flocculated by depletion attraction at high CMC/graphite mass ratios. The transient states of the nonadsorbing CMC and graphite particles in a medium were discussed, and the uses of this novel measurement technique to monitor the complex drying processes of films were demonstrated.
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Affiliation(s)
- Sanghyuk Lim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
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Pensini E, Yip CM, O’Carroll D, Sleep BE. Carboxymethyl cellulose binding to mineral substrates: Characterization by atomic force microscopy–based Force spectroscopy and quartz-crystal microbalance with dissipation monitoring. J Colloid Interface Sci 2013; 402:58-67. [DOI: 10.1016/j.jcis.2013.03.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 03/29/2013] [Accepted: 03/31/2013] [Indexed: 11/26/2022]
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23
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Comparing Carboxymethyl Cellulose and Starch as Thickeners in Oil/Water Emulsions. Implications on Rheological and Structural Properties. FOOD BIOPHYS 2013. [DOI: 10.1007/s11483-013-9287-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Azanza MPV. Hydrocolloid sour taste control in pasteurized rice. Journal of Food Science and Technology 2013; 51:3998-4004. [DOI: 10.1007/s13197-013-0947-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/23/2013] [Accepted: 01/30/2013] [Indexed: 11/25/2022]
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25
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Pensini E, Sleep BE, Yip CM, O'Carroll D. Forces of interactions between bare and polymer-coated iron and silica: effect of pH, ionic strength, and humic acids. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:13401-13408. [PMID: 23163600 DOI: 10.1021/es3036779] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The interactions between a silica substrate and iron particles were investigated using atomic force microscopy-based force spectroscopy (AFM). The micrometer- and nanosized iron particles employed were either bare or coated with carboxymethyl cellulose (CMC), a polymer utilized to stabilize iron particle suspensions. The effect of water chemistry on the forces of interaction was probed by varying ionic strength (with 100 mM NaCl and 100 mM CaCl₂) or pH (4, 5.5, and 8) or by introducing 10 mg/L of humic acids (HA). When particles were uncoated, the forces upon approach between silica and iron were attractive at pH 4 and 5.5 and in 100 mM CaCl₂ at pH 8, but they were negligible in 100 mM NaCl buffered to pH 8 and repulsive in water buffered to pH 8 and in HA solutions. HA produced electrosteric repulsion between iron particles and silica, likely due to its sorption to iron particles. HA sorption to silica was excluded on the basis of experiments conducted with a quartz-crystal microbalance with dissipation monitoring. Repulsion with CMC-coated iron was attributed to electrosteric forces, which were damped at high ionic strength. An extended DLVO model and a modified version of Ohshima's theory were successfully utilized to model AFM data.
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Affiliation(s)
- Erica Pensini
- Department of Civil Engineering, University of Toronto , Toronto, ON M5S 1A4, Canada
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26
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de Molina PM, Herfurth C, Laschewsky A, Gradzielski M. Structure and dynamics of networks in mixtures of hydrophobically modified telechelic multiarm polymers and oil in water microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15994-16006. [PMID: 23075139 DOI: 10.1021/la303673a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The structural and dynamical properties of oil-in-water (O/W) microemulsions (MEs) modified with telechelic polymers of different functionality (e.g., number of hydrophobically modified arms, f) were studied by means of dynamic light scattering (DLS), small-angle neutron scattering (SANS), and high frequency rheology measurements as a function of the polymer architecture and the amount of added polymer. For this purpose, we employed tailor-made hydrophobically end-capped poly(N,N-dimethylacrylamide) star polymers of a variable number of endcaps, f, of different alkyl chain lengths, synthesized by the reversible addition-fragmentation chain transfer method. The addition of the different end-capped polymers to an uncharged ME of O/W droplets leads to a large enhancement of the viscosity of the systems. SANS experiments show that the O/W ME droplets are not changed upon the addition of the polymer, and its presence only changes the interdroplet interactions. The viscosity increases largely upon addition of a polymer, and this enhancement depends pronouncedly on the alkyl length of the hydrophobic sticker as it controls the residence time in a ME droplet. Similarly, the high frequency modulus G(0) depends on the amount of added polymer but not on the sticker length. G(0) was found to be directly proportional to f - 1. The onset of network formation is shifted to a lower number of stickers per ME droplet with increasing f, and the network formation becomes more effective. Thus, the dynamics of network formation are controlled by the polymer architecture. The effect on the dynamics seen by DLS is even more pronounced. Upon increasing the polymer concentration, slower relaxation modes appear that become especially pronounced with increasing number of arms. The relaxation dynamics are correlated to the rheological relaxation, and both are controlled by the polymer architecture.
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Affiliation(s)
- Paula Malo de Molina
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany.
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Masjedian Jazi A, Rahimzadeh H, Sadeqi K. Detecting incipient cavitation by assessing low frequency acceleration and analysis of CMC. ULTRASONICS 2012; 52:753-759. [PMID: 22445155 DOI: 10.1016/j.ultras.2012.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 02/04/2012] [Accepted: 02/04/2012] [Indexed: 05/31/2023]
Abstract
Cavitation is a common phenomenon in a fluid circuit especially wherever local pressure is lower than fluid saturated pressure. The cavitation negatively affects a fluid system and structure in different ways: i.e. erosion, flow rate reduction, noise and vibration. In order to diminish cavitation, adding some nanomaterials seem to be applicable in different ways. This research aims at assessing the effects of CMC (Carboxy methyl cellulose) additives on incipient cavitation by analyzing the resultant change in low frequency acceleration. Furthermore, this study attempts to examine the accuracy of low frequency acceleration for detecting incipient cavitation.
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Affiliation(s)
- A Masjedian Jazi
- Fluid Mechanics Lab, Department of Mechanical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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28
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Cerbelaud M, Lestriez B, Guyomard D, Videcoq A, Ferrando R. Brownian dynamics simulations of colloidal suspensions containing polymers as precursors of composite electrodes for lithium batteries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10713-10724. [PMID: 22738282 DOI: 10.1021/la302135v] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dilute aqueous suspensions of silicon nanoparticles and sodium carboxymethylcellulose salt (CMC) are studied experimentally and numerically by brownian dynamics simulations. The study focuses on the adsorption of CMC on silicon and on the aggregation state as a function of the suspension composition. To perform simulations, a coarse-grained model has first been developed for the CMC molecules. Then, this model has been applied to study numerically the behavior of suspensions of silicon and CMC. Simulation parameters have been fixed on the basis of experimental characterizations. Results of brownian dynamics simulations performed with our model are found in qualitative good agreement with experiments and allow a good description of the main features of the experimental behavior.
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Affiliation(s)
- Manuella Cerbelaud
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP32229, 44322 Nantes cedex 3, France.
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29
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Lapitsky Y. Stimulus-Responsive Polyelectrolyte Particles: From Nanospheres to Macroscopic Beads. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.497704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Liang ZP, Wang XD, Duan YY, Min Q, Wang C, Lee DJ. Dynamic wetting of non-newtonian fluids: multicomponent molecular-kinetic approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14594-14599. [PMID: 20795633 DOI: 10.1021/la102041q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Hydrodynamic models are generally applied to describe the dynamic wetting of newtonian or non-newtonian fluids on a solid surface. Conversely, the molecular-kinetic paradigm is only utilized for spreading newtonian fluids while considering the movement of a contact line as a molecular hopping process. This study extended the molecular-kinetic paradigm to the wetting behavior of non-newtonian fluids, while assuming there are n fluid components at the contact line regime interacting simultaneously with a solid surface during front movement. The limiting cases of the derived model at slow and fast moving speeds were discussed. Moreover, the derived model was validated based on dynamic contact angle data of three carboxymethylcellulose (CMC) aqueous solutions measured using the force-balance method. Best-fit parameters were used to interpret the wetting dynamics of CMC solutions.
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Affiliation(s)
- Zhan-Peng Liang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
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32
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Thompson MS, Abercrombie SR, Ott CE, Bieler FH, Duda GN, Ventikos Y. Quantification and significance of fluid shear stress field in biaxial cell stretching device. Biomech Model Mechanobiol 2010; 10:559-64. [DOI: 10.1007/s10237-010-0255-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Accepted: 09/01/2010] [Indexed: 10/19/2022]
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33
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Kocherbitov V, Ulvenlund S, Briggner LE, Kober M, Arnebrant T. Hydration of a natural polyelectrolyte xanthan gum: Comparison with non-ionic carbohydrates. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.04.055] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Bhattarai S, Bunt C, Rathbone M, Alany RG. Phase behavior, rheological and mechanical properties of hydrophilic polymer dispersions. Pharm Dev Technol 2010; 16:259-68. [PMID: 20230192 DOI: 10.3109/10837451003664073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Liquid polymeric systems that can undergo phase change (sol to gel) upon administration into the teat canal of cow's mammary gland can serve as a physical barrier to invading pathogens and can also serve as a reservoir for controlled release of therapeutic agents. The aim of the study was to investigate the phase behavior, rheological and mechanical properties of selected in situ gelling systems. Six in situ gelling polymer formulations were identified using phase behavior studies. Rheological studies revealed pseudoplastic flow with thixotropy. All six formulations showed significantly different viscosity, pseudoplasticity and thixotropy values except for CMC1 and HPMC2 which where statistically similar. The gel strength was dependent on the solvent system used and amount of water in the system. These in situ gelling systems have the potential to serve as a platform for development of intramammary formulations intended for administration into the teat canal of the cow's mammary gland. They can serve as a physical barrier or a matrix for controlled drug release.
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Affiliation(s)
- Sushila Bhattarai
- Drug Delivery Research Unit (DDRU), School of Pharmacy, Faculty of Medical and Health Sciences, The University of Auckland, New Zealand
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35
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Bayarri S, González-Tomás L, Costell E. Viscoelastic properties of aqueous and milk systems with carboxymethyl cellulose. Food Hydrocoll 2009. [DOI: 10.1016/j.foodhyd.2008.02.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Fijan R, Basile M, Šostar-Turk S, Žagar E, Žigon M, Lapasin R. A study of rheological and molecular weight properties of recycled polysaccharides used as thickeners in textile printing. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2008.09.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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Pawlik M, Laskowski JS. Stabilization of Mineral Suspensions by Guar Gum in Potash Ore Flotation Systems. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450840504] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Pacios IE, Lindman B, Thuresson K. Polyelectrolyte–surfactant complexes with long range order. J Colloid Interface Sci 2008; 319:330-7. [DOI: 10.1016/j.jcis.2007.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Revised: 11/16/2007] [Accepted: 11/20/2007] [Indexed: 10/22/2022]
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39
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Parolis LA, van der Merwe R, Groenmeyer GV, Harris PJ. The influence of metal cations on the behaviour of carboxymethyl celluloses as talc depressants. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.10.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Di Risio S, Yan N. Piezoelectric Ink-Jet Printing of Horseradish Peroxidase: Effect of Ink Viscosity Modifiers on Activity. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200700226] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Kamburova K, Radeva T. Electro-optics of colloid–polyelectrolyte complexes: Counterion condensation on free and adsorbed sodium carboxymethyl cellulose. J Colloid Interface Sci 2007; 313:398-404. [PMID: 17568602 DOI: 10.1016/j.jcis.2007.05.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 05/02/2007] [Accepted: 05/02/2007] [Indexed: 11/19/2022]
Abstract
Electrical properties of sodium carboxymethyl cellulose (NaCMC) in aqueous solution and after addition to a dilute suspension of beta-ferric hydrous oxide particles (beta-FeOOH) are studied by means of electric birefringence method. We established extended conformation of the NaCMC chains in a solution at concentration 10(-2) g dm(-3), which is found high enough to assure overcharging of the particle surface. The frequency behavior of the electric birefringence of NaCMC solution with concentration 10(-2) gdm(-3) is found similar to the behavior of the suspension of beta-FeOOH particles containing same amount of polyelectrolyte. The observed decrease in the relaxation frequency of the electro-optical effect in both systems is attributed to polarization of condensed counterions near to the polyion surface. These results are in line with our previous estimation, showing that the condensed counterions are not released from NaCMC because of its adsorption onto weakly charged particle surface. They also reveal that, at overcompensation of the particle charge, the electrical properties of the adsorbed polyion dominate the electro-optical behavior of the weakly charged particle.
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Affiliation(s)
- Kamelia Kamburova
- Rostislaw Kaischew Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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42
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Wu M, Pan X, Qian X, Yin J, Zhu Z. Solution-phase synthesis of Ag 2 S hollow and concave nanocubes. INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2003.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Pawlik M, Laskowski JS, Ansari A. Effect of carboxymethyl cellulose and ionic strength on stability of mineral suspensions in potash ore flotation systems. J Colloid Interface Sci 2003; 260:251-8. [PMID: 12686172 DOI: 10.1016/s0021-9797(02)00225-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The adsorption of sodium carboxymethyl cellulose from aqueous solutions varying in ionic strength from that of distilled water to 50% NaCl/KCl brine (about 3.5 mol/dm(3)) onto illite and dolomite has been studied. The purpose of this work was to investigate the solvency effects in the phenomena underlying the potash flotation process that is carried out in saturated brine. Based on viscosity measurements, the adsorption results were analyzed in terms of a simple model of polymer macromolecules in solution. Suspension stability measurements carried out concomitantly with adsorption tests showed the ranges of carboxymethyl cellulose concentration over which the tested suspensions either were aggregated or were restabilized.
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Affiliation(s)
- M Pawlik
- Department of Mining and Mineral Process Engineering, The University of British Columbia, 517D-6350 Stores Road, Vancouver, Canada British Columbia V6T 1Z4, Canada
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46
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