adsorption of hydrophobically modified polyacrylamide p(am

Adsorption of hydrophobically modified polyacrylamide P(AM

The literature reported that the adsorption isotherms for hydrophobically modified polyacrylamide had a continual increase with a plateau region (Argillier et al., 1996). In Fig. 8 (f), the Δ f changed to −14.8 Hz, and Δ D was 7.2 ×10 −6 after even 9000 s, indicating the formation of a relatively thick and dissipative adsorption layer.

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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

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interaction and adsorption of hydrophobically modified

Interaction and Adsorption of Hydrophobically Modified

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

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interaction and adsorption of hydrophobically modified

Interaction and Adsorption of Hydrophobically Modified

Research Article Interaction and Adsorption of Hydrophobically Modified Polyacrylamide on Silica and Asphaltene Surfaces Wenjie Zou ,1 Zichuan Fang,1 Zhijun Zhang ,2 and Zhenzhen Lu 3 1Civil and Resource Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, China

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adsorption of cationic, anionic and hydrophobically

Adsorption of cationic, anionic and hydrophobically

The adsorption of modified polyacrylamides (PAM) at the silica surface has been studied by ellipsometry. To study the influence of the type of modification of the polyacrylamide on the adsorption behaviour, we have used cationic, anionic and hydrophobically modified polyacrylamides with varying charge density and degree of hydrophobisation. The adsorbed amount and adsorbed layer thickness were

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properties of hydrophobically modified polyacrylamide with

Properties of hydrophobically modified polyacrylamide with

Hydrophobically modified polyacrylamide (HMPAM), with a molecular weight of 10 4 g/mol, was studied using a range of rheological methods and dynamic light scattering (DLS). DLS measurements indicate that the association of the modified polymer begins at low concentration.

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synthesis and aqueous solution properties

Synthesis and Aqueous Solution Properties

Hydrophobically modified polyacrylamide (HMPAM) is synthesized by a free radical micellar polymerization method with low amounts of anionic long-chain alkyl, sodium 9-(and 10)-acrylamidostearate

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effect of salinity on adsorption and interaction forces

Effect of salinity on adsorption and interaction forces

Polyacrylamide (PAM) and hydrophobically modified polyacrylamide (HMPAM) with hydrophobic monomer (i.e., hexadecyl dimethyl allyl ammonium chloride (C 16 DMAAC)) have been investigated as model polymers. It is found that the adsorption amounts of HMPAM and PAM polymers on negatively charged silica and positively charged alumina surfaces

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solution and adsorption properties of hydrophobically

Solution and Adsorption Properties of Hydrophobically

(2009). Solution and Adsorption Properties of Hydrophobically Associating Polyacrylamide Prepared in Inverse Microemulsion Polymerization. Journal of Macromolecular Science, Part A: Vol. 46, No. 4, pp. 412-418.

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solution properties and flocculation of hydrophobically

Solution properties and flocculation of hydrophobically

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.

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properties of hydrophobically modified polyacrylamide with

Properties of hydrophobically modified polyacrylamide with

Hydrophobically modified polyacrylamide (HMPAM), with a molecular weight of 10 4 g/mol, was studied using a range of rheological methods and dynamic light scattering (DLS). DLS measurements indicate that the association of the modified polymer begins at low concentration.

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hydrophobically modified polyacrylamide block copolymers

Hydrophobically Modified Polyacrylamide Block Copolymers

Here, we describe the synthesis of hydrophobically modified block copolymers composed primarily of a hydrophilic acrylamide backbone structure with small, randomly placed blocks of N,N-dihexylacrylamide, and the formulation of these materials into DNA sequencing matrices[25–27]. We show that with the addition of only ~ 0.1 mol% of the

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glycidaldehyde modified cationic polyacrylamide polymers

glycidaldehyde modified cationic polyacrylamide polymers

Cationic starch-grafted-cationic polyacrylamide based . In order to solve this problem, some natural polymer, such as chitosan, cellulose and starch, has been investigated because their derivatives are biodegradable, and their degradation intermediates are harmless for people and the environment [, , ], and starch can be further modified to improve its cationic degree to enhance charge

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effect of salinity on adsorption of sodium

Effect of salinity on adsorption of sodium

Effect of salinity on adsorption of sodium hexametaphosphate and hydrophobically-modified polyacrylamide flocculant on kaolinite Al-OH surface Author: Zou, Wenjie, Fang, Zichuan, Huang, Jun, Zhang, Zhijun Source: Colloids and surfaces 2020 v.585 pp. 124055 ISSN: 0927-7757 Subject:

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synthesis of polyacrylamide/modified silica composite

Synthesis of polyacrylamide/modified silica composite

In this research, polyacrylamide (PAM)/modified silica (SiO 2-NH 2) composite hydrogels have been prepared via in situ free-radical polymerization. The gel fraction of the polymerization was studied by gravimetric method, and the mechanical property of the resultant hydrogels was examined using a tensile tester.

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study of synthesis and flocculation properties of new

Study of Synthesis and Flocculation Properties of New

A new modified hydrophobic organic polymer P(AM-DM-DMC12) is synthesized by free radical polymerization of three monomers in aqueous solution using a REDOX initiator system. Its structure is characterized by FT-IR and 1 H-NMR, the effect of reaction conditions on the product is studied, and the flocculation performance and mechanism are discussed with the aim of wastewater turbidity and COD

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synthesis of hydrophobically modified polyacrylamide

Synthesis of hydrophobically modified polyacrylamide

In this project, phenyl-polyacrylamide (PPAM), a hydrophobically modified polyacrylamide is studied as a potential viscosifier in waterflooding process. PPAM is synthesised by free radical micellar copolymerisation. The synthesised copolymer was characterised and the polymer composition was determined.

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flocculation effects of hydrophobically modified

Flocculation Effects of Hydrophobically Modified

The hydrophobically modified polyacrylamides (PAM) were synthesized using butyl acrylate (BA) and methyl methacrylate (MMA) as hydrophobic monomers, via water solution free radical copolymerization. The influences of hydrophobic monomer content on the molecular weight, insoluble fraction and dissolution rate of PAM were investigated. The flocculation effects of PAMs for two kinds of tailing

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preparation and characterization of hydrophobically

Preparation and characterization of hydrophobically

A modified polyacrylamide (PAM-g-GMA) has been prepared by ring-opening reaction of glycidyl methacrylate (GMA) monomer grafted onto the -COO - groups of partially hydrolytic polyacrylamide (PAM) chain. The modified polyacrylamide hydrogels were obtained via a free radical polymerization of PAM-g-GMA without adding any a crosslinker using potassium persulfate (KPS), as initiator, and

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optimized synthesis of polyacrylamide (pam) with uv/h2o2

Optimized synthesis of polyacrylamide (PAM) with UV/H2O2

P. Pal, J.P. Pandey, G. Sen, Chapter 5-Synthesis and application as programmable water soluble adhesive of polyacrylamide grafted gum tragacanth (GT-g-PAM), Biopolymer Grafting, (2018) 153–203.

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wholesale cationic polyacrylamide used in textile printing

Wholesale Cationic Polyacrylamide Used in Textile Printing

Wholesale Cationic Polyacrylamide Used in Textile Printing Water Treatment Polyacrylamide is a linear polymer, it is soluble in water, almost insoluble in benzene, ethylbenzene, esters, acetone and other general organic solvents, the water solution is almost transparent viscous liquid, is a non-dangerous goods , Non-toxic, non-corrosive, solid polyacrylamide has hygroscopicity, moisture

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enhanced swelling and methylene blue adsorption

Enhanced swelling and methylene blue adsorption

Compared with PAM/MMT composites, PAM/SA‐MMT composites demonstrated greater water absorbency (863 g g −1 in distilled water and 101 g g −1 in 0.9 wt % NaCl solution) and higher adsorption capacity of 2639 mg g −1 for MB. The adsorption behaviors of the composites showed that the isotherms and adsorption kinetics were in good agreement

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university of groningen synthesis and evaluation of novel

University of Groningen Synthesis and evaluation of novel

Partially hydrolyzed polyacrylamide (HPAM) is the most widely used polymer obtained for HPAM.13 Studies have demonstrated that the adsorption of hydrophobically modified polyacrylamides is significantly higher (i.e. by no injectivity problems could be detected for a hydrophobically modified PAM in dilute18 and semi-dilute regimes. The

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study of synthesis and flocculation properties of new

Study of Synthesis and Flocculation Properties of New

A new modified hydrophobic organic polymer P(AM-DM-DMC12) is synthesized by free radical polymerization of three monomers in aqueous solution using a REDOX initiator system. Its structure is characterized by FT-IR and 1 H-NMR, the effect of reaction conditions on the product is studied, and the flocculation performance and mechanism are discussed with the aim of wastewater turbidity and COD

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thermosensitive, hydrophobically modified anionic

Thermosensitive, Hydrophobically Modified Anionic

2015. Thermosensitive, hydrophobically modified anionic flocculants for dewatering kaolin clays, in Proceedings Tailings and Mine Waste Management for the 21st Century, pp 45–50 (The Australasian Institute of Mining and Metallurgy: Melbourne).

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synthesis of hydrophobically modified polyacrylamide

Synthesis of hydrophobically modified polyacrylamide

In this project, phenyl-polyacrylamide (PPAM), a hydrophobically modified polyacrylamide is studied as a potential viscosifier in waterflooding process. PPAM is synthesised by free radical micellar copolymerisation. The synthesised copolymer was characterised and the polymer composition was determined.

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properties of hydrophobically modified polyacrylamide with

Properties of hydrophobically modified polyacrylamide with

Hydrophobically modified polyacrylamide (HMPAM), with a molecular weight of 104 g/mol, was studied using a range of rheological methods and dynamic light scattering (DLS). DLS measurements indicate that the association of the modified polymer begins at low concentration.

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top quality flocculant anionic polyacrylamide with

Top Quality Flocculant Anionic Polyacrylamide with

Mechanism of flocculation of polyacrylamide. 2016-01-23 09:23:01. PAM has two characteristics: a long chain (line) like molecular structure and a large number of active groups. Polyacrylamide and Flocculant, top ten of China,exporting over 63 countries. We produce such as Anionic polyacrylamide, Cationic polyacrylamide, flocculant,etc.

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polyacrylamide - lookchem

Polyacrylamide - LookChem

water treatment flocculant cationic anionic nonionic PAM polyacrylamide CAS 9003-05-8. Min.Order: 1 Metric Ton. FOB Price: USD $ 0.0-0.0/Metric Ton. The main chain of polyacrylamide has a large number of amide groups and has high chemical activity. It can be modified to produce many polyacrylamide derivatives.

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preparation and characterization of hydrophobically

Preparation and characterization of hydrophobically

A modified polyacrylamide (PAM-g-GMA) has been prepared by ring-opening reaction of glycidyl methacrylate (GMA) monomer grafted onto the -COO - groups of partially hydrolytic polyacrylamide (PAM) chain. The modified polyacrylamide hydrogels were obtained via a free radical polymerization of PAM-g-GMA without adding any a crosslinker using potassium persulfate (KPS), as initiator, and

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wholesale cationic polyacrylamide used in textile printing

Wholesale Cationic Polyacrylamide Used in Textile Printing

Wholesale Cationic Polyacrylamide Used in Textile Printing Water Treatment Polyacrylamide is a linear polymer, it is soluble in water, almost insoluble in benzene, ethylbenzene, esters, acetone and other general organic solvents, the water solution is almost transparent viscous liquid, is a non-dangerous goods , Non-toxic, non-corrosive, solid polyacrylamide has hygroscopicity, moisture

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us patent for hydrophobically associating polymers

US Patent for Hydrophobically associating polymers

This invention describes novel hydrophobically associating ter or tetra polymers which can contain sulfonate functionality which are useful as aqueous fluid rheology or flow modifiers. These high molecular weight water soluble polymers contain both water soluble and water insoluble monomers. The water soluble monomers are N, N dimethylacrylamide acrylamide (DMA) and optionally a salt of an

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