anionic surfactant polyacrylamide copolymer in rio de janeiro
anionic surfactant polyacrylamide copolymer in rio de janeiro
anionic surfactant polyacrylamide copolymer in rio de janeiro
anionic surfactant polyacrylamide copolymer in rio de janeiro
anionic surfactant polyacrylamide copolymer in rio de janeiro
polyacrylamide degradation and its implications in ... - nature

Polyacrylamide degradation and its implications in ... - Nature

High MW anionic PAM is also the most commonly applied polymer in enhanced oil recovery applications; the use of surfactant-polymer flooding can increase oil recovery by 5¨C30% 14 and in some...

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water soluble polymer flocculants: synthesis

Water Soluble Polymer Flocculants: Synthesis

Polymer adsorption can occur through hydrogen bonding (polyacrylamide on silica silanol groups), electrostatic interaction (cationic polymers on negatively charged sludge), hydrophobic interaction (poly (vinyl alcohol) on silver iodide), and ion bridging (anionic polyacrylamide on negatively charged clays with the help of divalent calcium ion). 7

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best practices guidance for the use of anionic polyacrylamide

Best Practices Guidance for the Use of Anionic Polyacrylamide

Anionic (negatively charged) Cationic (positively charged) Non-ionic (no charge) Organic or inorganic Organic polymers can be: Natural (e.g. starch, rubber, DNA, proteins) Synthetic (e.g. nylon, teflon, PVC, polyacrylamide) Semi-synthetic (e.g. vulcanized rubber, chitosan)

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synthesis and characterization of acrylamide-based anionic

Synthesis and Characterization of Acrylamide-Based Anionic

The copolymer of acrylamide (AM) and 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) was synthesized through radical solution polymerization by potassium persulfate as initiator. By changing the AMPS feed ratio from 10 to 70%, and keeping other reaction conditions constant, diferent copolymers were synthesized.

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rheology of hydrophobically modified polyacrylamide-co-poly

Rheology of Hydrophobically Modified Polyacrylamide-co-poly

Constant shear and shear dependent viscosity measurements are reported in aqueous systems of co- and terpolymers of acrylamide (AM), N-n-alkylacrylamide (C10, C12, and C14 alkyl groups), and acrylic acid (AA) with added anionic surfactant sodium dodecyl sulfate (SDS). The results are presented as three-dimensional plots of viscosity vs surfactant concentration and pH at constant shear rate or

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synthesis and characterization of acrylamide-based anionic

Synthesis and Characterization of Acrylamide-Based Anionic

The best mobility control agents in surfactant-polymer and polymer-augmented water flooding processes are conventional polymers such as polyacrylamides, especially partially hydrolyzed polyacrylamide, but they are not suitable for high-temperature reservoirs (>90¡ãC) with high-density brine fluids.

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fabricating an anionic polyacrylamide (apam) with an anionic

Fabricating an anionic polyacrylamide (APAM) with an anionic

Considering all aforementioned factors, this study attempts to (1) synthesize the template copolymer (TPAS) with the anionic microblock structure through UTP using AM and SAS as monomers, and PAAC as template; (2) elaborate the template polymerization mechanism through the analysis of the association constant K M; (3) characterize the chemical structure of polymers using FT-IR, scanning

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fabricating an anionic polyacrylamide (apam) with an anionic

Fabricating an anionic polyacrylamide (APAM) with an anionic

anionic polyacrylamide with high occulation performance have been developed and applied in the waste water treat-ment.16,17 However, the defect of the APAM, namely, the disor-dered and random distribution of anionic units in the polymer chain, seriously restricts the further enhancement of the solid-water separation ability.

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surfactant self-assembling and critical micelle concentration

Surfactant Self-Assembling and Critical Micelle Concentration

Critical micelle concentration (CMC) is the main chemical¨Cphysical parameter to be determined for pure surfactants for their characterization in terms of surface activity and self-assembled aggregation. The CMC values can be calculated from different techniques (e.g., tensiometry, conductivity, fluorescence spectroscopy), able to follow the variation of a physical property with surfactant

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surfactants: physicochemical interactions with biological

Surfactants: physicochemical interactions with biological

Although the physicochemical properties of (bio) surfactants have been well documented through the years (Mankowich 1953; Behrens 1964; Van Os et al. 1993; Patino et al. 2007; Morais et al. 2017 ), their interaction with biological components has had less focus. This review therefore focuses on the properties of surfactants that are relevant

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