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properties of polyacrylamides polymer function

  • Properties of Polyacrylamides - polymerdatabase.com

    2020-7-11 · Properties. Polyacylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K). The only commercially important polyacrylamide is poly (2-propenamide) which is simply called polyacrylamide or PAM [-CH 2 CH (CONH 2 )-].

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  • Properties of hydrophobically associating

    1993-8-1 · Synthesis, characterization and rheological properties of acrylamide acidic monomer N-(4-ethylphenyl) acrylamide Terpolymers as pH- responsive hydrogels and nanogels. Polymer-Plastics Technology and Materials 2020, 59 (4) , 441-455. https://doi.org/10.1080/25740881.2019.1669645

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  • Synthesis and rheological properties of

    2009-5-1 · The coil overlap concentration (c ∗) is a concentration which depends on the molecular weight of the polymer sample where one observes an exponential upward curvature in a plot of zero shear viscosity as a function of polymer concentration. If a viscosity upturn is observed in HMPAM solution as a function of polymer concentration, it cannot be attributed to chain overlap if the samples are within the …

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  • Solution properties of hydrophobically modified ...

    2016-12-1 · The combination of rheological behavior (i.e. thickening properties), surface and interfacial activities of these polymers can be of great technological interest, especially in a number of important commercial applications such as enhanced oil recovery (EOR), drag reduction, flocculation, super absorbency, latex paints, hydraulic fluids, protein separations, industrial thickeners, controlled drug …

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  • Charge Effects in the Adsorption of Polyacrylamides on ...

    2003-3-3 · pH also shows complex effects on the adsorption of polymers, affecting both functional groups on polyacryl- amide and charging properties of clay. Sepa- rate charging mechanisms for clay edges and faces can even result in opposite charges.

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  • Evaluation of solution and rheological properties for ...

    2017-9-1 · Polymer flooding through hydrophobically associated polyacrylamide polymers (HAPAMs) have attracted much attention in oil industry , because of their unique structures and properties, including their thickening properties, shear thinning, anti polyelectrolyte behavior as a mobility control agents and rheology modifiers .

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  • The Effect of Hyrolysis of Polyacrylamide on Solution ...

    Resistance factor curves display the effects of viscosity and polymer retention on mobility reduction properties. Information outlined in this paper is helpful in showing specific differences in hydrolyzed polyacrylamides that are a function of the degree of hydrolysis and are important in selecting the right polymer for a particular field application. polymer for a particular field application

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  • Chemistry, Function, and Fate of Acrylamide-Based

    Acrylamide-based polymers are used widely in water and wastewater treatment to enhance flocculation processes. It is often assumed that a polymer’s molecular weight and its type and amount of electrical charge are the crucial parameters governing its performance.

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  • Adsorption of hybrid polyacrylamides on anisotropic ...

    2016-6-5 · The structural properties of such novel molecules can always be tuned to meet a targeted application . Organic-inorganic polyacrylamides are the focus of this work due to the importance of polyacrylamides and their co-polymers in a wide range of industrial processes such as soil erosion control, soil conditioning and irrigation control.

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  • Properties of hydrophobically associating

    1993-8-1 · Effects of Monomer Feed Amounts on Solution Properties and Solution Morphologies for a Comb-like Ter-polymer. Journal of Macromolecular Science, Part B 2017, 56 (11-12) , 834-852.

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  • pH effects on the solubility of polyacrylamides in hard ...

    1995-1-3 · Ehsan Nourafkan, Maje Alhaji Haruna, Jabbar Gardy, Dongsheng Wen, Improved rheological properties and stability of multiwalled carbon nanotubes/polymer in harsh environment, Journal of Applied Polymer Science, 10.1002/app.47205, 136, 11, (2018).

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  • Influence of adsorbed polysaccharides and

    2006-3-1 · The characteristics of the bulk polymer will obviously affect the ability of that polymer to perform a particular function. However, the properties that will have the most impact on the interaction forces between a particle and a bubble are those of the adsorbed layer. ... The general molecular structures of polyacrylamides (Polymer-N contains ...

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  • Molecular dynamics simulation of polyacrylamides in ...

    function indicated that hydration shells were formed. In the presence of polyacrylamides more potassium counterions move close to the clay surface while water molecules move away, indicating that potassium counterions are hydrated to a lesser extent than the system in which no polyacrylamides were added.

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  • Effect of Cationic Polyacrylamides on the Interactions ...

    2019-12-12 · The interaction between cellulose fibers in the presence of cationic polyacrylamide (CPAM) was analyzed by rheology as a function of polyelectrolyte concentration, charge density, and molecular weight. CPAM was found to strongly influence the yield stress of cellulose suspensions; low doses of CPAM increased the yield stress, but at higher concentrations the yield stress declined. The charge ...

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  • Surface Tension and Surface Dilatational Elasticity of ...

    2001-6-29 · The effects of the variation of different parameters in some hydrophobically modified polyacrylamides in aqueous polymer solution on their surface properties have been investigated. Two different hydrophobes, N,N-dihexylacrylamide (DiHexAM) and N-(4-butylphenyl)acrylamide (BPAM), have been used; the former was most extensively investigated. The molecular weight (50 000−1 000 000), …

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  • Rheological Properties in Aqueous Solution for ...

    2016-10-6 · Rheological Properties in Aqueous Solution for Hydrophobically Modified Polyacrylamides Prepared in Inverse Emulsion Polymerization ShirleyCarro,1 ValeriaJ.Gonzalez-Coronel,2 JorgeCastillo-Tejas,1 HortensiaMaldonado-Textle,3 andNancyTepale2 1FacultaddeCienciasB´asicas,Ingenier ´ıayTecnologıa,UniversidadAutonomadeTlaxcala,CalzadaApizaquitoS/N,

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  • Study on Properties of Branched Hydrophobically

    2016-9-8 · The effect of partially hydrolyzed polyacrylamides (HPAMs) used for polymer flooding is unsatisfactory under the conditions of high temperature and high salinity. In order to improve the viscosifying ability of HPAM, branched macromolecular skeleton monomer is used to change the linear backbone structure. A new branched hydrophobically modified polyacrylamide (BHMPAM) was …

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  • Viscoelastic Behavior of Semidilute Solutions of ...

    2019-5-26 · Multisticker polymer chains consisting of water-soluble polyacrylamides hydrophobically modified with low amounts of N,N-dihexylacrylamide have been prepared by a free radical micellar polymerization technique.This process gives multiblock copolymers in which the number and length of the hydrophobic blocks can be tuned by varying the surfactant over hydrophobe molar ratio.

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  • INFLUENCE OF POLYMER CHARGE TYPE AND DENSITY

    2010-11-20 · Polymer adsorption on soils is a function of soil, polymer, and solvent (water) characteristics (Wallace et al., 1986; Aly and Letey, 1988; Shainberg et al., 1990). Adsorption of PAM on clay minerals varies with polymer charge type and density. For montmorill-onite, Aly …

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  • Adsorption of Polyacrylamides on Kaolinite and Its ...

    2003-2-20 · Flocculation is indeed dependent on polymer adsorption, and there are hypotheses correlating the two phenomena, but often these have been pit forth without detailed -.sur~t of the t~ phenomena si81ltaneou.ly (10-13). In this paper. flocculation is investigated as a function of polymer and solution properties

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  • Investigation of rheological properties of polymer ...

    2021-5-28 · Non-Newtonian shear viscosities were measured for 24 solutions of 3 different polyacrylamides. The polymer concentration varies from 50 to 2,500 ppm. Distilled water and 20,000-ppm NaCl solutions were used as solvents to afford comparison of the rheological properties between fresh and saline solutions.

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  • Role of polymeric dispersant functional groups in the ...

    2004-12-7 · The adsorption of polymeric dispersants onto titania pigment particles has been investigated at pH 9.5 as a function of the type of polymer functional group, using polyacrylic acid and modified polyacrylamides. The polyacrylamides include homopolymer and copolymers with either hydroxyl groups or carboxylate and hydroxyl groups.

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  • Research Article Study on Properties of Branched ...

    2019-7-31 · polyacrylamide s properties and its applications in high tem-perature and salinity reservoirs, HPAM should be modi ed to change the viscosifying way. In this paper, we synthesized a new branched hydrophobically modi ed polyacrylamide (BHMPAM) and evaluated the properties of the polymer solution. 2. Experiments Involved.. Materials.

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  • Quantitative characterization of polyacrylamide–shale ...

    2017-6-22 · Interaction of polymer-containing injected fluids with shale is a widely studied phenomenon, but much is still unknown about the interaction of charged polyacrylamides such as anionic and cationic polyacrylamides with shale. The nature of interaction of charged polyacrylamides with shale is not well understood, especially from the perspective of assessing the potential for polyacrylamides to ...

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  • Comparative studies of rheological properties of ...

    2006-11-22 · Neetish Kumar Maurya, Prabhakar Kushwaha, Ajay Mandal, Studies on interfacial and rheological properties of water soluble polymer grafted nanoparticle for application in enhanced oil recovery, Journal of the Taiwan Institute of Chemical Engineers, 10.1016/j.jtice.2016.10.021, 70, …

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  • Surface Tension and Surface Dilatational Elasticity of ...

    2001-6-29 · The effects of the variation of different parameters in some hydrophobically modified polyacrylamides in aqueous polymer solution on their surface properties have been investigated. Two different hydrophobes, N,N-dihexylacrylamide (DiHexAM) and N-(4-butylphenyl)acrylamide (BPAM), have been used; the former was most extensively investigated. The molecular weight (50 000−1 000 000), …

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  • Controlling properties of thermogels by tuning critical ...

    Polymer solutions were tested at 5 wt% polymer for rheological experiments. SAOS measurements below the LCST of all polymers were performed at 25 °C. Measurements above the LCST of all polymers were performed at 78 °C unless otherwise specified. SAOS temperature ramps were performed at a frequency of 6 rad s −1 with a ramp rate of 2 °C min ...

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  • Experiment: Can You Get a Systematic

    Structure–property–function relationship of fluorescent conjugated microporous polymers ... /storage, and ion exchange. Introducing the benefits of microporous polymers into the extended π-conjugated organic polymer gives rise to novel materials, namely, conjugated microporous polymers (CMPs), which endow even more intriguing properties ...

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  • Polymer Properties Database - polymerdatabase.com

    2020-7-27 · Thermophysical Properties Of Polymers How to Browse. This index is organized alphabetically. Click on the letters A to Z to the left to peruse the list of polymer classes, then click on the links below to view the thermophysical properties of a polymer. Polyacrylamides General Structure: Poly(acrylamide) Poly(N-isopropyl acrylamide)

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  • Some aspects of the properties and degradation of ...

    Some aspects of the properties and degradation of polyacrylamides. Some aspects of the properties and degradation of polyacrylamides Chem Rev. ... . Authors Marcus J Caulfield 1 , Greg G Qiao, David H Solomon. Affiliation 1 Polymer Science Group, Department of Chemical Engineering, The University of Melbourne, Victoria 3010, Australia.

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  • Investigation of rheological properties of polymer ...

    2021-5-28 · Non-Newtonian shear viscosities were measured for 24 solutions of 3 different polyacrylamides. The polymer concentration varies from 50 to 2,500 ppm. Distilled water and 20,000-ppm NaCl solutions were used as solvents to afford comparison of the rheological properties between fresh and saline solutions.

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  • Role of polymeric dispersant functional groups in the ...

    2004-12-7 · The adsorption of polymeric dispersants onto titania pigment particles has been investigated at pH 9.5 as a function of the type of polymer functional group, using polyacrylic acid and modified polyacrylamides. The polyacrylamides include homopolymer and copolymers with either hydroxyl groups or carboxylate and hydroxyl groups.

    Get Price
  • Synthesis, Characterization, and Flocculation

    2017-6-22 · Interaction of polymer-containing injected fluids with shale is a widely studied phenomenon, but much is still unknown about the interaction of charged polyacrylamides such as anionic and cationic polyacrylamides with shale. The nature of interaction of charged polyacrylamides with shale is not well understood, especially from the perspective of assessing the potential for polyacrylamides to ...

    Get Price
  • Quantitative characterization of polyacrylamide–shale ...

    2010-9-26 · Polymer chains consisting of water-soluble polyacrylamides hydrophobically modified with low amount of hydrophobic groups, with varying hydrophobic chain structure (C16 and Cdi8) and with varying localization of the hydrophobe along the chain (telechelic, multisticker, and combined polymers) were investigated. The viscoelastic behavior of these associative polymers has been studied in ...

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  • Rheological properties of three different

    Thermoresponsive hydrogel materials show promise as biomaterials as their properties can be widely tuned to fit engineering requirements for an array of important applications. ... (ethylene glycol) block and penda Polymer Chemistry Pioneering Investigators 2021 Jump to main content ... block and pendant N-substituted polyacrylamides can be ...

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  • Controlling properties of thermogels by tuning critical ...

    Evaluation of the flow properties of dilute aqueous polymer solutions for enhanced oil recovery applications involves the determination of solution properties. In this research, the properties of the solutions of xanthan gum, sodium cellulose sulfate esters, polyacrylamides, and hydroxy ethyl cellulose and the injectabilities of these solutions ...

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  • flocculation properties of acrylamide-based niscai

    Properties of Polyacrylamides. It is a non-ionic, watersoluble, and biocompatible polymer that can be tailored to meet a broad range of applications. The polymer can be synthesized as a simple linear chain or as a cross-linked structure. PAM increases the viscosity of water and encourages the flocculation of particles present in water.

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  • Polyacrylamide degradation and its implications in ...

    2000-6-1 · Water-soluble polyacrylamide polymers have been used to reduce water production in oil wells and for mobility control in injection wells for decades. 1 One of the attractive properties of polyacrylamides is their ability to reduce the relative permeability to water more than the relative permeability to oil in porous media. From the published field tests on well treatments by polymer ...

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  • Effects of Polymer Adsorption and Flow Behavior on

    1979-3-1 · Read 'High‐molecular‐weight hydrolyzed polyacrylamides. I. Characterization. Effect of salts on the conformational properties, Journal of Polymer Science (In Two Sections)' on DeepDyve, the largest online rental service for scholarly research with thousands of …

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  • High‐molecular‐weight hydrolyzed polyacrylamides. I ...

    Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements. However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for this type of fluid.

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  • Rheological Properties of PHPA Polymer Support

    2011-1-20 · The hydrophobically associating cationic fluorinated polyacrylamide (CFPAM), modified with fluorinated acrylate, 2-(perfluorooctyl)ethyl acrylate (FEA), has been newly synthesized, by free radical micellar copolymerization in aqueous solution. The solution properties of these polymers were investigated in details in this study. In addition, the flocculation of CFPAM was also evaluated. The ...

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  • Solution properties and flocculation of

    A systematic laboratory study of the various mechanisms possibly acting on the properties of flexible polymer solutions flowing through porous media was polymer solutions flowing through porous media was performed in order to interpret at a molecular level performed in order to interpret at a molecular level the phenomena previously observed, such as dilatant behavior, hydrodynamic retention ...

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  • Molecular Interpretation of Several Different

    The effect of ionization (α) and added salts (NaCl, CaCl 2, MgCl 2) on the dimensions of commercially available high‐molecular‐weight polyacrylamides (M w ≃ 4 × 10 6), hydrolyzed at various extents (0.04 < τ < 0.49) and which have been characterized, was investigated by viscosity and light‐scattering measurements performed at 25°C.The data point with evidence to the strong ...

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  • High‐molecular‐weight hydrolyzed polyacrylamides. I ...

    2014-11-5 · A series of hydrophobic associative copolymers using acrylamide (AM), sodium 4-styrenesulfonate (SSS) and hydrophobic stearyl methylacrylate (SMA) as co-monomers were prepared by microemulsion polymerization. Factors affecting the rheological properties of the aqueous copolymer solutions, such as the content of hydrophobic monomer, amount of SSS, amount of initiator, amount …

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  • Synthesis and Solution Properties of Hydrophobically ...

    Computed properties are virtual properties based on one or more pieces of the element's data. A computed property is generated by a computing function—essentially, a complex observer that returns a value. Unless otherwise specified, notes about observers apply to simple observers, complex observers, and computed properties.

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  • Polymer structure and its relationship to the dilute ...

    Polymer structure and its relationship to the dilute solution properties of high molecular weight polyacrylamide

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  • Polyacrylamide nonionic water-soluble polymer | 9003

    Polyacrylamide nonionic water-soluble polymer; CAS Number: 9003-05-8; Linear Formula: (C3H5NO)n; find Sigma-Aldrich-92560 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich

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  • Thermoresponsive properties of poly(N-isopropyl,N ...

    Poly(N-isopropyl,N-methylacrylamide) (PiPMAm) was synthesized to create a new family of thermoresponsive polyacrylamides using the B(C 6 F 5) 3-catalyzed group transfer polymerization (GTP) of N-isopropyl,N-methylacrylamide (iPMAm) with 1-methoxy-1-(triethylsiloxy)-2-methyl-1-propene (SKA Et) as the initiator.The B(C 6 F 5) 3-catalyzed group transfer copolymerization (GTcoP) of iPMAm and …

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  • Rheological Properties of PHPA Polymer Support

    Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements. However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for this type of fluid.

    Get Price
  • WO2018122443A1 - Glyoxylated polyacrylamide

    A cationic glyoxylated polyacrylamide polymer composition having improved storage stability for use in manufacture of paper, board or the like, which aqueous composition comprises an unreacted glyoxal in an amount of below 1 weight-%, a glyoxylated polyacrylamide polymer having a cationic charge density in the range of 0.8 - 1.8 meq/g of dry polymer in dry content of 6 - 13 % and a buffering acid.

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  • High‐molecular‐weight hydrolyzed polyacrylamides. I ...

    1979-3-1 · Read 'High‐molecular‐weight hydrolyzed polyacrylamides. I. Characterization. Effect of salts on the conformational properties, Journal of Polymer Science (In Two Sections)' on DeepDyve, the largest online rental service for scholarly research with thousands of …

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  • Libraries of modified polyacrylamides using

    2016-3-15 · Polyacrylamide‐based (PAM) polymers are the most widely used synthetic water‐soluble polymer so they are applied in a range of industries. However, they suffer from a number of limitations which requires the development of synthetic routes that can accurately control polymer structure and hence function. This study describes a carbodiimide mediated coupling reaction (CMC) that is used to ...

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  • Comparative Study of Physical Properties of In-Use ...

    2014-8-6 · 3.5. The Comparison of Physical Properties On the basis the research results above mentioned, unlike traditional polymer, multi-constitutes S-PAM is a new oil displacement polymer which is formed by multi-constitutes graft copolymerization with flexible hydrocarbon chain as the frame based on interactions of molecules.

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  • Molecular Interpretation of Several Different

    A systematic laboratory study of the various mechanisms possibly acting on the properties of flexible polymer solutions flowing through porous media was polymer solutions flowing through porous media was performed in order to interpret at a molecular level performed in order to interpret at a molecular level the phenomena previously observed, such as dilatant behavior, hydrodynamic retention ...

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  • Observers and computed properties - Polymer Project

    Computed properties are virtual properties based on one or more pieces of the element's data. A computed property is generated by a computing function—essentially, a complex observer that returns a value. Unless otherwise specified, notes about observers apply to simple observers, complex observers, and computed properties.

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  • Some aspects of the properties and degradation of ...

    2002-9-1 · Some aspects of the properties and degradation of polyacrylamides. Marcus J Caulfield Polymer Science Group, Department of Chemical Engineering, The University of …

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  • Synthesis and Solution Properties of Hydrophobically ...

    2019-7-18 · Keywords Microemulsion polymerization Hydrophobic associative polymer Shear Rheological properties 1 Introduction Hydrophobically associating water-soluble polymers are hydrophilic polymers modified with a small number of hydrophobic groups, i.e., 8–18 carbon atom moieties [1–4], dis-tributed along the main backbone [5].

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  • high molecular weight hydrolyzed polyacrylamides

    Glass transition temperature, T g, is an important thermophysical property of polyacrylamides, which can be difficult to determine experimentally and resource-intensive to calculate.Data-driven modeling approaches provide alternative methods to predict T g in a rapid and robust way. We develop the Gaussian process regression model to predict the glass transition temperature of polyacrylamides ...

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  • Machine learning glass transition temperature of ...

    The three polymers, Nos. 500, 700 and NC 1870, are partially hydrolized polyacrylamides manufactured by The Dow Chemical Co., and were from lots 8085, 52 and 87-8100E, respectively. Polymer NC 1870 is currently at a developmental stage and can be obtained in limited quantities; the other two have been available commercially for some time, have ...

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  • Shear Viscosities of Ionic Polyacrylamide Solutions ...

    2020-8-25 · relative amount of molecules with specific values of molecular masses in a polymer is described by a distribution function of relative molecular mass. The distribution function affects significantly many properties of polymers and is one of their …

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  • Structure and Properties of Polymers - EOLSS

    2021-1-10 · Polymer Properties Database. A-Z Polymer Data. Theromophysical key data on over two hundred and fifty polymers. Properties. A-Z Producers. Major Producers & Distributors of Plastics, Rubbers, and Resins. Companies . Plastics & Rubber News. Latest breaking news and headlines in the rubber and plastic industry.

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  • A-B Resin Info - polymerdatabase.com

    Default values for properties may be specified in the properties object using the value field, or set imperatively in the element's constructor. The value in the properties object may either be a primitive value, or a function that returns a value. If you provide a function, Polymer calls the function once per element instance.

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  • Declare Properties - Polymer Project

    Polymer solutions were tested at 5 wt% polymer for rheological experiments. SAOS measurements below the LCST of all polymers were performed at 25 °C. Measurements above the LCST of all polymers were performed at 78 °C unless otherwise specified. SAOS temperature ramps were performed at a frequency of 6 rad s −1 with a ramp rate of 2 °C min ...

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  • Controlling properties of thermogels by tuning critical ...

    2019-10-1 · The properties of a polymer depend on the breadth and shape of the MWD in the final polymeric material 5,20 and, as a result, a number of approaches have been developed to control polymer Ð.Owing ...

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