• probing adsorption of polyacrylamide-based polymers

    Probing Adsorption of Polyacrylamide-Based Polymers

    Quartz crystal microbalance with dissipation (QCM-D) was applied to investigate the adsorption characteristics of polyacrylamide-based polymers (PAMs) on anisotropic basal planes of kaolinite. Kaolinite basal planes were differentiated by depositing kaolinite nanoparticles (KNPs) on silica and alumina sensors in solutions of controlled pH values.

  • probing adsorption of polyacrylamide-based polymers

    Probing adsorption of polyacrylamide-based polymers

    2013-03-26· Probing adsorption of polyacrylamide-based polymers on anisotropic Basal planes of kaolinite using quartz crystal microbalance. Alagha L(1), Wang S, Yan L, Xu Z, Masliyah J. Author information: (1)Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada.

  • probing adsorption of polyacrylamide-based polymers

    Probing Adsorption of Polyacrylamide-Based Polymers

    Quartz crystal microbalance with dissipation (QCM-D) was applied to investigating the adsorption characteristics of polyacrylamide-based polymers (PAMs) on anisotropic basal planes of kaolinite.

  • adsorption kinetics of a novel organic–inorganic hybrid

    Adsorption Kinetics of a Novel Organic–Inorganic Hybrid

    2011-07-19· Adsorption kinetics of an organic–inorganic hybrid polymer, Al(OH) 3 –polyacrylamide (Al-PAM), on silica and alumina were studied by a dissipative quartz crystal microbalance (QCM-D). The effects of molecular weight and aluminum content of Al-PAM on its adsorption at varying solution pH were investigated.

  • "probing adsorption of polyacrylamide-based polymers

    "Probing Adsorption of Polyacrylamide-Based Polymers

    Probing Adsorption of Polyacrylamide-Based Polymers on Anisotropic Basal Planes of Kaolinite Using Quartz Crystal Microbalance Langmuir Lana Z. Alagha,Missouri University of Science and Technology

  • interaction and adsorption of hydrophobically modified

    Interaction and Adsorption of Hydrophobically Modified

    The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C 16 DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal

  • probing the adsorption and interaction mechanisms

    Probing the adsorption and interaction mechanisms

    There were more aromatic compounds but less alkyl chain in coal than asphaltene. The similar FTIR spectra of coal and asphaltene suggested that asphaltene can be used as a model system for probing the adsorption behavior of polymers on coal surface using QCM-D technique.

  • reduced adsorption of polyacrylamide‐based fracturing

    Reduced adsorption of polyacrylamide‐based fracturing

    Polyacrylamide‐based fracturing fluid is commonly used in shale fracturing. Polyacrylamide (PAM) becomes adsorbed in the shale micro‐fractures, decreasing the permeability of the reservoir. For improving the production of shale after being stimulated, the adsorption behavior and adsorption mechanism between the PAM and shale are studied. An

  • probing the adsorption/desorption of amphiphilic

    Probing the adsorption/desorption of amphiphilic

    Hydrophobically modified polymers are good candidates for the stabilization of liquid interfaces thanks to the high anchoring energy of the hydrophobic parts. In this article we probe the interfacial anchoring of a series of home-made hydrophobically modified polymers with controlled degree of grafting by st

  • effect of salinity on adsorption of sodium

    Effect of salinity on adsorption of sodium

    2020-01-20· In this work, the effect of K + and Ca 2+ on adsorption of SHMP and HMPAM on alumina surface were systematically investigated using QCM-D technique. The adsorption of HMPAM and SHMP is highly salinity-depended. Compared with the stretched conformation of HMPAM in 10 mM KCl solution, the more flexible and coiled configuration of HMPAM in 100 mM

  • effect of salinity on adsorption and interaction forces

    Effect of salinity on adsorption and interaction forces

    In this work, the adsorption behaviors and interaction forces of different polymers on silica and alumina surfaces have been investigated under the effect of KCl concentration using quartz crystal micro-balance with dissipation (QCM-D) monitoring technique, viscosity measurement and atomic force microscopy (AFM) colloidal probe technique.

  • reduced adsorption of polyacrylamide‐based fracturing

    Reduced adsorption of polyacrylamide‐based fracturing

    Polyacrylamide‐based fracturing fluid is commonly used in shale fracturing. Polyacrylamide (PAM) becomes adsorbed in the shale micro‐fractures, decreasing the permeability of the reservoir. For improving the production of shale after being stimulated, the adsorption behavior and adsorption mechanism between the PAM and shale are studied. An

  • interaction and adsorption of hydrophobically modified

    Interaction and Adsorption of Hydrophobically Modified

    The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C 16 DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal

  • probing the adsorption/desorption of amphiphilic

    Probing the adsorption/desorption of amphiphilic

    Hydrophobically modified polymers are good candidates for the stabilization of liquid interfaces thanks to the high anchoring energy of the hydrophobic parts. In this article we probe the interfacial anchoring of a series of home-made hydrophobically modified polymers of controlled degree of grafting by studying their behavior upon large area dilations and compressions. By comparing the

  • price anionic polyacrylamide with decolorization

    Price Anionic Polyacrylamide with decolorization

    The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were examined. Cited by: 4; Adsorption and flocculation behavior of cationic

  • polyacrylamide

    Polyacrylamide

    Polyacrylamide (IUPAC poly(2-propenamide) or poly(1-carbamoylethylene), abbreviated as PAM) is a polymer (-CH 2 CHCONH 2-) formed from acrylamide subunits. It can be synthesized as a simple linear-chain structure or cross-linked, typically using N,N '-methylenebisacrylamide.In the cross-linked form, the possibility of the monomer being present is reduced even further.

  • matière molle, psl research university, upmc univ paris 06

    Matière Molle, PSL Research University, UPMC Univ Paris 06

    Probing the adsorption/desorption of amphiphilic polymers at the air-water interface during large interfacial deformations C. Tregouet1,2, T. Salez3,4, N. Pantoustier1, P. Perrin1, M. Reyssat2 and C. Monteux1,4 1. Laboratoire Sciences et Ingénierie de la Matière

  • adsorption of nitroxide spin probes at the

    Adsorption of Nitroxide Spin Probes at the

    polymers have allowed estimation of the train-to-loop ratio of the adsorbed polymer chain and adsorbed layer thick-ness.17 For successful FER investigation of interface structures, the selection of proper probes is a critical step. Two questions must be answered for the results to be mean-ingful: (1) Does the probe modify the adsorption char-

  • marek pawlik norman b. keevil mining engineering

    Marek Pawlik Norman B. Keevil Mining Engineering

    Froth flotation, wettability of mineral surfaces, depression and activation phenomena, chemistry of flotation reagents (surfactants, polymers), gas bubble-surfactant interactions, bubble size measurements in surfactant solutions, surface charging phenomena on mineral surfaces, adsorption of surfactants and polymers, interactions of polymers and surfactants with mineral surfaces, interparticle

  • complexes of calcium-montmorillonite with polymers

    Complexes of Calcium-Montmorillonite with Polymers

    VARIOUS types of polymers have been used to stabilize soil crumbs1–5, the polymers linking together the domains of clay crystals within the crumbs6. To obtain further information on the nature

  • probing surfaces with single-polymer atomic force

    Probing surfaces with single-polymer atomic force

    For polymers that glide or slip laterally over the surface with negligible friction, on the other hand, the measured force profiles exhibit plateaus which allow one to extract the polymer adsorption energies. Long-term stable polymer coatings of theAFM tips allow for the possibility of repeating desorption

  • interaction and adsorption of hydrophobically modified

    Interaction and Adsorption of Hydrophobically Modified

    The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C 16 DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal

  • probing the adsorption/desorption of amphiphilic polymers

    Probing the adsorption/desorption of amphiphilic polymers

    Probing the adsorption/desorption of amphiphilic polymers at the air-water interface during large interfacial deformations. Soft Matter, Royal Society of Chemistry, 2019, 15 (30), pp.6200-6206. ￿10.1039/C9SM00368A￿. ￿hal-02052775￿

  • probing the adsorption/desorption of amphiphilic

    Probing the adsorption/desorption of amphiphilic

    Hydrophobically modified polymers are good candidates for the stabilization of liquid interfaces thanks to the high anchoring energy of the hydrophobic parts. In this article we probe the interfacial anchoring of a series of home-made hydrophobically modified polymers of controlled degree of grafting by studying their behavior upon large area dilations and compressions. By comparing the

  • probing the adsorption/desorption of amphiphilic

    Probing the adsorption/desorption of amphiphilic

    Probing the adsorption/desorption of amphiphilic polymers at the air-water interface during large interfacial deformations Hydrophobically modified polymers are good candidates for the stabilization of liquid interfaces thanks to the high anchoring energy of the hydrophobic parts.

  • polyacrylamide

    Polyacrylamide

    Polyacrylamide (IUPAC poly(2-propenamide) or poly(1-carbamoylethylene), abbreviated as PAM) is a polymer (-CH 2 CHCONH 2-) formed from acrylamide subunits. It can be synthesized as a simple linear-chain structure or cross-linked, typically using N,N '-methylenebisacrylamide.In the cross-linked form, the possibility of the monomer being present is reduced even further.

  • probing the polymer anomalous dynamics at solid/liquid

    Probing the polymer anomalous dynamics at solid/liquid

    The use of STReM would provide profound insights into the mechanism of the protein and polymer adsorption at solid/liquid interfaces. The aforementioned studies pointed to the effort in understanding and eventually controlling the passive adsorption of polymers and proteins at solid/liquid interfaces. In fact, a very interesting question is

  • enhanced swelling and methylene blue adsorption

    Enhanced swelling and methylene blue adsorption

    Enhanced swelling and methylene blue adsorption of polyacrylamide‐based superabsorbents using alginate modified montmorillonite

  • preparation and characterization of a novel hybrid

    Preparation and characterization of a novel hybrid

    The discharge of heavy metal ions such as Cu 2 + and Pb 2 + poses a severe threat to public health and the environment owing to their extreme toxicity and bioaccumulation through food chains. Herein, we report a novel organic–inorganic hybrid adsorbent, Al(OH) 3-poly(acrylamide-dimethyldiallylammonium chloride)-graft-dithiocarbamate (APD), for rapid and effective removal of Cu 2 + and Pb 2 +.

  • transfer and degradation of polyacrylamide-based

    Transfer and degradation of polyacrylamide-based

    2014-09-26· The aim of this review was to summarize information and scientific data from the literature dedicated to the fate of polyacrylamide (PAM)-based flocculants in hydrosystems. Flocculants, usually composed of PAMs, are widely used in several industrial fields, particularly in minerals extraction, to enhance solid/liquid separation in water containing suspended matter. These polymers can contain

  • adsorption of surf act ants and polymers at the solid

    Adsorption of surf act ants and polymers at the solid

    COLLOIDS A AND SURFACES Colloids and Surfa.:es ELSEVIER A: Physicochemical and Engineering Aspects 123-124(1997)491-513 Adsorption of surf act ants and polymers at the solid-liquid interface P. Somasundaran *, S. Krishnakumar

  • probing the density variation of confined polymer thin

    Probing the Density Variation of Confined Polymer Thin

    After more than 2 decades of intense research, the density variation in confined polymer films still remains a puzzling problem subject to controversy as the methods utilized to determine the density are often model dependent. Here, we propose a direct and model independent method to detect the density/refractive index variations in polymer thin films through the adsorption of ceria

  • price anionic polyacrylamide with decolorization

    Price Anionic Polyacrylamide with decolorization

    The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were examined. Cited by: 4; Adsorption and flocculation behavior of cationic

  • capturing carbon dioxide as a polymer from natural gas

    Capturing carbon dioxide as a polymer from natural gas

    Similarly, although absolute adsorption isotherms can be used to determine the heat of sorption, excess adsorption isotherms are more often used to calculate the heat of CO 2 sorption (Q CO2

  • adsorption mechanism of sodium oleate on titanium

    Adsorption mechanism of sodium oleate on titanium

    ALAGHA L., WANG S., YAN L., XU Z., MASLIYAH J., 2013, Probing adsorption of polyacrylamide-based polymers on anisotropic basal planes of kaolinite using quartz crystal microbalance, Langmuir, 12, 3989–3998. AUTA M., HAMEED B.H., 2014, Chitosan–clay composite as highly effective and low cost adsorbent for batch and fixed-bed adsorption of methylene blue, Chem. Eng. J., 237, 350–361

  • a ph effect in the hpsec separation of polyacrylamide

    A pH Effect in the HPSEC Separation of Polyacrylamide

    four polyacrylamide-based samples having the eame nominal molecular weight and molecular weight distribution and different levels of anionic content. The samples are examined in two column systems under conditions where the ionic nature of these polymers plays a dominant role in the solution properties. This unique set thus permits one to study the

  • probing biopolymers with scanning force methods

    Probing Biopolymers with Scanning Force Methods

    Probing Biopolymers with Scanning Force Methods: Adsorption, Structure, Properties, and Transformation of Gelatin on Mica Greg Haugstad and Wayne L. Gladfelter* Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431 Elizabeth B. Weberg, Rolf T. Weberg, and Timothy D. Weatherill

  • probing the density variation of confined polymer thin

    Probing the Density Variation of Confined Polymer Thin

    The amount of adsorbed NP scales with the polymer film refractive index; hence, any increase/decrease in the NP surface coverage directly indicates an increase/decrease in the film refractive index and density. Experimenting our proposed novel approach on two well-studied polymers, we found that the density of polystyrene (PS) thin films

  • bifunctional polyacrylamide based polymers for the

    Bifunctional polyacrylamide based polymers for the

    We describe a modified bifunctional analogue of polyacrylamide that spontaneously forms self-assembled polymeric thin films on Au surfaces. The film is engineered to specifically bind histidine tagged proteins (6His), while simultaneously remaining inherently resistant to the non-specific adsorption

  • adsorption of nitroxide spin probes at the

    Adsorption of Nitroxide Spin Probes at the

    polymers have allowed estimation of the train-to-loop ratio of the adsorbed polymer chain and adsorbed layer thick-ness.17 For successful FER investigation of interface structures, the selection of proper probes is a critical step. Two questions must be answered for the results to be mean-ingful: (1) Does the probe modify the adsorption char-

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