Polyacrylamide−Clay Nanocomposite Hydrogels: Rheological
The free-radical polymerization of acrylamide in aqueous clay dispersions and the structure of the resulting polymer−clay nanocomposite hydrogels have been investigated by rheometry using oscillatory deformation tests. Laponite was used as clay particles in the hydrogel preparation. The reactions were carried out with and without the presence of the chemical cross-linker N,N‘-methylenebis
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Polyacrylamide−Clay Nanocomposite Hydrogels: Rheological
The free-radical polymerization of acrylamide in aqueous clay dispersions and the structure of the resulting polymer−clay nanocomposite hydrogels have been investigated by rheometry using oscillatory deformation tests. Laponite was used as clay particles in the hydrogel preparation. The reactions were carried out with and without the presence of the chemical cross-linker N,N‘-methylenebis
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Polyacrylamide Clay Nanocomposite Hydrogels: Rheological
Polyacrylamide-Clay Nanocomposite Hydrogels: Rheological and Light Scattering Characterization Oguz Okay*,† and Wilhelm Oppermann*,‡ Department of Chemistry, Istanbul Technical UniVersity, 34469 Maslak, Istanbul, Turkey, and Institute of Physical Chemistry, Clausthal UniVersity of Technology, Arnold-Sommerfeld-Str. 4,
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Polyacrylamide−Clay Nanocomposite Hydrogels: Rheological
Polyacrylamide−Clay Nanocomposite Hydrogels: Rheological and Light Scattering Characterization Article in Macromolecules 40(9) · April 2007 with 232 Reads How we measure 'reads'
Get PricePreparation and characterization of nanocomposite
Rituraj Singh and Vikas Mahto, Preparation, Characterization and Coreflood Investigation of Polyacrylamide/Clay Nanocomposite Hydrogel System for Enhanced Oil Recovery, Journal of Macromolecular Science, Part B, 55, 11, (1051), (2016).
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Nanocomposite hydrogels - ScienceDirect
O. Okay, W. OppermannPolyacrylamide–clay nanocomposite hydrogels: rheological and light scattering characterization Macromolecules, 40 (2007), pp. 3378-3387 Google Scholar
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Layered double hydroxide/polyacrylamide nanocomposite
Layered double hydroxide (LDH)/polyacrylamide (PAM) nanocomposite (NC) hydrogels were successfully prepared utilizing Co/Al-LDH nanosheet as inorganic crosslinker, acrylamide as monomer via in-situ free radical polymerization at room temperature in water. The Co/Al-LDH used here is freshly prepared Co/Al-LDH solution with a Tyndall phenomenon, which avoids the exfoliation and dispersion
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Synthesis, characterization and rheological behavior of pH
O. Okay, W. OppermannPolyacrylamide-clay nanocomposite hydrogels: rheological and light scattering characterization Macromolecules, 40 (2007), pp. 3378-3387 Google Scholar
Get PricePreparation and characterization of polyacrylamide
The swelling degree (SD) of the swollen hydrogel nanocomposite was increased following the addition of polyacrylamide-modified Kaol particles into the hydrogel structures. Rheological characterization showed that an increase in the storage modulus (G′) could be a consequence of a good dispersion of Kaol particles in the polyacrylic acid
Get PriceRheology of Poly(N‑isopropylacrylamide)−Clay Nanocomposite
The nanocomposite hydrogels (NC gels) and soft nanocomposites (M-NCs) obtained were flexible and transparent soft materials, regardless of the clay content, that could be prepared in various
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Nanocomposite polymer hydrogels | SpringerLink
Okay O, Oppermann W (2007) Polyacrylamide–clay nanocomposite hydrogels: rheological and light scattering characterization. Macromolecules 40(9):3378–3387 Article
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Swelling and Rheological Relationships of Polyacrylamide
Nanocomposite hydrogels were prepared by cross-linking of aqueous solutions of sulfonated polyacrylamide/sodium montmorillonite with chromium triacetate.
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Enhance the mechanical performance of polyacrylamide
Firstly, nanocomposite hydrogels are easier to produce. Secondly, nanoparticles can bring about new functionalities to the hydrogel networks, for example responsiveness to optical, thermal, magnetic, electric stimuli and so on, thus becoming “smart” . These distinctive features make nanocomposite hydrogel a good candidate to be produced in
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The Adsorption of Polyacrylamide Nanocomposite Hydrogels
The Adsorption of Polyacrylamide Nanocomposite Hydrogels on Sandstone Samira Rajaee1, The most common clay used in polymer–clay preparation of nanocomposites is montmorillonite (MMT), which has two silica–oxygen (Italy). Sodium lactate as a retarder was provided by Merck Co. (Germany) in the form of a colorless liquid.
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Preparation and Characterization of Nanoclay-Based (Na-MMT
Zolfaghari R, Katbab A, Nabavizadeh J, Yousefzadeh Tabasi R, Hossein NM (2006) Preparation and characterization of nanocomposite hydrogels based on polyacrylamide for enhanced oil recovery applications. J Appl Polym Sci 100:2096–2103. Article; CAS; Google Scholar
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High-water-content mouldable hydrogels by mixing clay
Okay, O. & Oppermann, W. Polyacrylamide-clay nanocomposite hydrogel: rheological and light scattering characterization. Macromolecules 40 , 3378–3387 (2007) ADS CAS Article Google Scholar
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Preparation and characterization of nanocomposite
Rituraj Singh and Vikas Mahto, Preparation, Characterization and Coreflood Investigation of Polyacrylamide/Clay Nanocomposite Hydrogel System for Enhanced Oil Recovery, Journal of Macromolecular Science, Part B, 55, 11, (1051), (2016).
Get Price
Polyacrylamide-clay nanocomposite hydrogels: Rheological
At a clay concentration of 5 % or above, all the reaction systems, with or without BAAm, exhibit similar elastic moduli, indicating that clay mainly determines the rubber elasticity of the hydrogels. The loss factor tan ä was found to be around 0.1, indicating that the nanocomposite hydrogels are much more viscous than the conventional hydrogels.
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Enhance the mechanical performance of polyacrylamide
Firstly, nanocomposite hydrogels are easier to produce. Secondly, nanoparticles can bring about new functionalities to the hydrogel networks, for example responsiveness to optical, thermal, magnetic, electric stimuli and so on, thus becoming “smart” . These distinctive features make nanocomposite hydrogel a good candidate to be produced in
Get Price
The Adsorption of Polyacrylamide Nanocomposite Hydrogels
The Adsorption of Polyacrylamide Nanocomposite Hydrogels on Sandstone Samira Rajaee1, The most common clay used in polymer–clay preparation of nanocomposites is montmorillonite (MMT), which has two silica–oxygen (Italy). Sodium lactate as a retarder was provided by Merck Co. (Germany) in the form of a colorless liquid.
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Rheological Characterization of Hydrogels from Alginate
The interest toward alginate and nanoemulsion-based hydrogels is driven by the wide potential of application. These systems have been noticed in several areas, ranging from pharmaceutical, medical, coating, and food industries. In this investigation, hydrogels prepared through in situ calcium ion release, starting from lemongrass essential oil nanodispersions stabilized in alginate aqueous
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Preparation and Characterization of Nanoclay-Based (Na-MMT
Zolfaghari R, Katbab A, Nabavizadeh J, Yousefzadeh Tabasi R, Hossein NM (2006) Preparation and characterization of nanocomposite hydrogels based on polyacrylamide for enhanced oil recovery applications. J Appl Polym Sci 100:2096–2103. Article; CAS; Google Scholar
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Dynamic rheology studies of in situ polymerization process
A series of dynamic small-amplitude oscillatory shear experiments for in situ polymerization process of polyacrylamide–cellulose nanocrystal (PAM–CNC) nanocomposite hydrogels were performed to investigate the relationship between rheological properties and synthesis parameters including chemical cross-linker concentration, polymerization temperature, initiator concentration, and CNC aspect
Get PriceEquilibrium swelling behavior and elastic properties
Nanocomposite hydrogels were prepared by free‐radical polymerization of the monomers acrylamide (AAm), N,N‐dimethylacrylamide (DMA), and N‐isopropylacrylamide (NIPA) in aqueous clay dispersions at 21°C.Laponite XLS was used as clay nanoparticles in the hydrogel preparation.
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Polyacrylamide-clay nanocomposite hydrogels: Rheological
At a clay concentration of 5 % or above, all the reaction systems, with or without BAAm, exhibit similar elastic moduli, indicating that clay mainly determines the rubber elasticity of the hydrogels. The loss factor tan ä was found to be around 0.1, indicating that the nanocomposite hydrogels are much more viscous than the conventional hydrogels.
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Novel Hydrogel-Advanced Modified Clay Nanocomposites as
1. Introduction. Nanocomposite hydrogels were, are and will be promising materials with very high potential in a large variety of domains, especially in biomedicine [1,2,3].Due the synergistic molecular combination of polymeric matrix and nanometric inorganic partner, these materials meet a series of requirements related with their final application, such as: high stimuli responsiveness (heat
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Investigation of Rheological Properties of Polyacrylamide
Journal of Dispersion Science and Technology Volume 35, 2014 Investigation of Rheological Properties of Polyacrylamide/Chromium Triacetate Hydrogels Performed for Water Shutoff Treatment in Oil Reservoirs Characterization and Coreflood Investigation of Polyacrylamide/Clay Nanocomposite Hydrogel System for Enhanced Oil Recovery.
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Study on the Dynamic Rheometry and Swelling Properties
(2012). Study on the Dynamic Rheometry and Swelling Properties of the Polyacrylamide/Laponite Nanocomposite Hydrogels in Electrolyte Media. Journal of Macromolecular Science, Part B: Vol. 51, No. 6, pp. 1027-1040.
Get PriceHigh-water-content mouldable hydrogels by mixing clay
Okay, O. & Oppermann, W. Polyacrylamide-clay nanocomposite hydrogel: rheological and light scattering characterization. Macromolecules 40 , 3378–3387 (2007) ADS CAS Article Google Scholar
Get PriceThe Adsorption of Polyacrylamide Nanocomposite Hydrogels
The Adsorption of Polyacrylamide Nanocomposite Hydrogels on Sandstone Samira Rajaee1, The most common clay used in polymer–clay preparation of nanocomposites is montmorillonite (MMT), which has two silica–oxygen (Italy). Sodium lactate as a retarder was provided by Merck Co. (Germany) in the form of a colorless liquid.
Get PriceJournal of Macromolecular Science, Part B
ABSTRACTThe synthesis and characterization of polyacrylamide/clay nanocomposites for the development of hydrogel system used in enhanced oil recovery is described. The synthesized nanocomposite copolymer was crosslinked with Chromium (III) acetate to form the hydrogel which exhibited an acceptable gel strength, gelation time and gel stability.
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Synthesis, characterization, rheological behavior,
Hossein Khakpour and Mahdi Abdollahi, Copolymer microstructure, nanocomposite morphology and aqueous solution viscosity of styrene-modified polyacrylamides in situ synthesized in presence of clay mineral, Applied Clay Science, 10.1016/j.clay.2017.10.004, 151, (10-19), (2018).
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