synthesis of high molecular weight amphoteric polyacrylamide

Synthesis of high molecular weight amphoteric polyacrylamide

Download Citation | Synthesis of high molecular weight amphoteric polyacrylamide | Polyacrylamide (PAM) with M̄w of about ten million was modified by Mannich reaction and Hydrolysis to prepare

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synthesis of high molecular weight polyacrylamide

Synthesis of high molecular weight polyacrylamide

The radiation‐induced polymerization of acrylamide was studied to prepare a high molecular weight and highly effective polyacrylamide flocculant. Among various solvents, mixtures of water– tert ‐butyl alcohol and water–acetone were found to be suitable for the synthesis of the high molecular weight polyacrylamide.

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molecular weight of amphoteric polyacrylamide: how it

Molecular weight of amphoteric polyacrylamide: How it

"Molecular weight of amphoteric polyacrylamide: How it is influenced by the variables in synthesis, and its impacts on the dry strength of paper sheets," BioRes. 11(2), 3709-3718. Abstract Amphoteric polyacrylamide (AmPAM) is a linear water-soluble polymer that has been applied in papermaking as an agent for flocculation, retention, filtration

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synthesis of a novel ultra high relative molecular mass

Synthesis of a novel ultra high relative molecular mass

Download Citation | Synthesis of a novel ultra high relative molecular mass amphoteric polyacrylamide | The high relative molecular mass amphoteric polyacrylamide (APAM) was synthesized with

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molecular weight of amphoteric polyacrylamide: how

Molecular Weight of Amphoteric Polyacrylamide: How

Molecular Weight of Amphoteric Polyacrylamide: How it is Influenced by the Variables in Synthesis, and its Impacts on the Dry Strength of Paper Sheets

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synthesis and characterization of amphoteric

Synthesis and characterization of amphoteric

Synthesis and characterization of amphoteric polyacrylamide by dispersion polymerization in aqueous salts solution Amphoteric terpolymers composed of acrylamide, 2-methylacryloylxyethyl trimethyl ammonium chloride, and 2-acry- method is that it could obtain both high molecular weight and high reaction rate. However, there are some

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us4617359a - high molecular weight polyacrylamide

US4617359A - High molecular weight polyacrylamide

This invention discloses a process for the polymerization of acrylamide and for the copolymerization of acrylamide with other monomers. It employs a ferrous/hydroperoxide redox initiator system that greatly enhances the molecular weight of the polymer formed. These high molecular weight acrylamide polymers offer outstanding advantages in enhanced oil recovery as injection water viscosifiers.

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synthesis and characterization of polyacrylamide

SYNTHESIS AND CHARACTERIZATION OF POLYACRYLAMIDE

Low temperatures promote synthesis of high mol ecular weight PAM (Lin, 2001). Actually, elevating the reaction temperature causes decrease in molecular weight on account of increase in the rate of

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synthesis of super high molecular weight copolymer of am

Synthesis of super high molecular weight copolymer of AM

Super high molecular weight copolymers of AM/NaA/AMPS were prepared by oxidation–reduction [OR-P(AM/NaA/AMPS)] and controlled radical polymerization [CR-P(AM/NaA/AMPS)]. The resulting copolymers were fully characterized, and the reaction conditions for their preparation were optimized. OR-P(AM/NaA/AMPS), CR-P(AM/NaA/AMPS), and conventional partially hydrolyzed polyacrylamide (HPAM) in brine

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aqueous dispersion polymerization of amphoteric polyacrylamide

Aqueous dispersion polymerization of amphoteric polyacrylamide

Aqueous dispersion polymerization of amphoteric polyacrylamide. Yumin Wu. Corresponding Author. E-mail address: wuyumin001@126.com. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China.

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inverse emulsion polymerization for the synthesis of high

Inverse Emulsion Polymerization for the Synthesis of High

Inverse Emulsion Polymerization for the Synthesis of High Molecular Weight Polyacrylamide and Its Application as Sand Stabilizer Mahmoud A. Mohsin1 and Nuha F. Attia2 1Department of Chemistry, University of Sharjah, P.O. Box 27272, Sharjah, UAE 2Abu Dhabi Polytechnic, P.O. Box 111499, Abu Dhabi, UAE Received 13 April 2015; Revised 11 June 2015; Accepted 14 June 2015 Academic Editor: Gonzalo

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characterization of hydrophobically modified

Characterization of Hydrophobically Modified

The study deals with the synthesis and characterization of the hydrophobically modified polyacrylamide (HMPA) copolymer and its functional property evaluation in mixed polymer-gemini surfactant systems for application in enhanced oil recovery (EOR). The copolymer was initially prepared in the laboratory using acrylamide and N-phenylacrylamide monomer units via an addition polymerization route.

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photoinitiated polymerization of cationic acrylamide

Photoinitiated Polymerization of Cationic Acrylamide

A copolymer of acrylamide (AM) with acryloyloxyethyl trimethyl ammonium chloride (DAC) as the cationic monomer was synthesized under the irradiation of high-pressure mercury lamp with 2,2-azobis(2-amidinopropane) dihydrochloride (V-50) as the photoinitiator. The compositions of the photoinduced copolymer were characterized by Fourier transform infrared spectra (FTIR), ultraviolet spectra (UV

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aqueous solution polymerization of acrylamide:a pilot

Aqueous solution polymerization of acrylamide:a pilot

The polymerization of acrylamide was initiated by complex redox system in aqueous solution. Meanwhile, according to the best experimental craft, we conducted a pilot-scale polymerization of acrylamide. We studied the effects of different pilot experiment intrinsic viscosity of the polymer, dissolution time, solubility, and the conversion rate.

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characterization of hydrophobically modified

Characterization of Hydrophobically Modified

cules, which happens to high molecular weight polymers under high shear.19 Polymers with the amphiphilic structure of hydrophobically associative polymers exhibit synergistic interfacial and rheological properties in diverse systems.20−22 Synthesis techniques have been developed to achieve high-molecular-weight block copolymers with enhanced

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cationic polyacrylamide - dissertation

Cationic polyacrylamide - Dissertation

Syntheses and Applications of High Molecular Weight Cationic and Amphoteric Polyacrylamides, ZhangHongJie/Tianjin University of Science and Technology,5/789; Synthesis and Application of Cationic Polyacrylamide Flocculants, HuRui/Central China Normal University,2/722

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synthesis of super high molecular weight copolymer of am

Synthesis of super high molecular weight copolymer of AM

Super high molecular weight copolymers of AM/NaA/AMPS were prepared by oxidation–reduction [OR-P(AM/NaA/AMPS)] and controlled radical polymerization [CR-P(AM/NaA/AMPS)]. The resulting copolymers were fully characterized, and the reaction conditions for their preparation were optimized. OR-P(AM/NaA/AMPS), CR-P(AM/NaA/AMPS), and conventional partially hydrolyzed polyacrylamide (HPAM) in brine

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characterization of hydrophobically modified

Characterization of Hydrophobically Modified

Figure Figure2 2 shows the 1 H NMR spectral data for hydrophobically modified polyacrylamide (HMPA). The compound was dissolved in dimethyl sulfoxide in deuterated form (DMSO-d 6) as a lock solvent and its spectral data was recorded in the solution state to identify NMR peaks.The existence of characteristic signals at chemical shift (δ) values of 0.81–1.63 ppm relates to methyl −CH 2 groups.

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characterization of hydrophobically modified

Characterization of Hydrophobically Modified

cules, which happens to high molecular weight polymers under high shear.19 Polymers with the amphiphilic structure of hydrophobically associative polymers exhibit synergistic interfacial and rheological properties in diverse systems.20−22 Synthesis techniques have been developed to achieve high-molecular-weight block copolymers with enhanced

Get Price
aqueous solution polymerization of acrylamide:a pilot

Aqueous solution polymerization of acrylamide:a pilot

The polymerization of acrylamide was initiated by complex redox system in aqueous solution. Meanwhile, according to the best experimental craft, we conducted a pilot-scale polymerization of acrylamide. We studied the effects of different pilot experiment intrinsic viscosity of the polymer, dissolution time, solubility, and the conversion rate.

Get Price
blufloc a6518 anionic polyacrylamide high molecular weight

blufloc a6518 anionic polyacrylamide high molecular weight

Synthesis of High Molecular Weight Cationic Polyacrylamide Cationic polyacrylamide is a derivative of polyacrylamide, a cationic polymer flocculant which has an excellent effect on sewage treatment. Our existing cationic polyacrylamide are mostly prepared by the Mannich reaction ,which has the shortcomings of more unreacted material, low

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amphoteric polyacrylamide anionic polyacrylamide

amphoteric polyacrylamide anionic polyacrylamide

Molecular weight of amphoteric polyacrylamide: How it is. Molecular Weight of Amphoteric Polyacrylamide: How it is Influenced by the Variables in Synthesis, and its Impacts on the Dry Strength of Paper Sheets. Yangyang Zhu, a Er-suo Jin, a Fang Yang, a Xiangyu Li, a Wenyuan Zhu, a Chunli Yao, b and Junlong Song a, * Amphoteric amylopectin: a

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low molecular weight cationin polyacrylamide in tajikistan

low molecular weight cationin polyacrylamide in tajikistan

"Molecular weight of amphoteric polyacrylamide: How it is influenced by the variables in synthesis, and its impacts on the dry strength of paper sheets," BioRes. 11(2), 3709-3718. Abstract Amphoteric polyacrylamide (AmPAM) is a linear water-soluble polymer that has been applied in papermaking as an agent for flocculation, retention, filtration

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synthesis and application of salt tolerance amphoteric

Synthesis and application of salt tolerance amphoteric

The results elaborate that the flocculation performances of amphoteric hydrophobic-associating AAB flocculants are better than that of commercial flocculants (cationic and anionic polyacrylamide) and homemade cationic flocculant (AAB-0-5) independent of the type and concentration of salt.

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synthesis and properties of new amphoteric poly(amidoamine

Synthesis and properties of new amphoteric poly(amidoamine

ropy material. Three kinds of amphoteric PAMAM dendrimers (P1, P2, P3) were prepared by using three different molecular weight MPEO (Mr = 454, 654, 1054) and the yield was 72.4–78.2%. Elemental analysis was performed for P 1, P2 and P3. Found (%) of P1: C 53.20, H 8.06, N 11.16; Calcd (%) according to nominal molecular formula

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synthesis and application of salt tolerance amphoteric

Synthesis and application of salt tolerance amphoteric

The results elaborate that the flocculation performances of amphoteric hydrophobic-associating AAB flocculants are better than that of commercial flocculants (cationic and anionic polyacrylamide) and homemade cationic flocculant (AAB-0-5) independent of the type and concentration of salt.

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blufloc a6518 anionic polyacrylamide high molecular weight

blufloc a6518 anionic polyacrylamide high molecular weight

Synthesis of High Molecular Weight Cationic Polyacrylamide Cationic polyacrylamide is a derivative of polyacrylamide, a cationic polymer flocculant which has an excellent effect on sewage treatment. Our existing cationic polyacrylamide are mostly prepared by the Mannich reaction ,which has the shortcomings of more unreacted material, low

Get Price
amphoteric polyacrylamide anionic polyacrylamide

amphoteric polyacrylamide anionic polyacrylamide

Molecular weight of amphoteric polyacrylamide: How it is. Molecular Weight of Amphoteric Polyacrylamide: How it is Influenced by the Variables in Synthesis, and its Impacts on the Dry Strength of Paper Sheets. Yangyang Zhu, a Er-suo Jin, a Fang Yang, a Xiangyu Li, a Wenyuan Zhu, a Chunli Yao, b and Junlong Song a, * Amphoteric amylopectin: a

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aqueous dispersion polymerization of amphoteric

Aqueous dispersion polymerization of amphoteric

Aqueous dispersion of polyurethanes from H12MDI PTAdPPG and DMPA Particle size of dispersion and physical properties of emulsion cast films.

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synthesis of cationic flocculant by radiation-induced

Synthesis of cationic flocculant by radiation-induced

The radiation-induced polymerization of acrylamide was studied to prepare a high molecular weight and highly effective polyacrylamide flocculant. Among various solvents, mixtures of water--tert-butyl alcohol and water--acetone were found to be suitable for the synthesis of the high molecular weight polyacrylamide.

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international journal of polymer science - hindawi

International Journal of Polymer Science - Hindawi

Currently enhanced oil recovery (EOR) technology is getting more attention by many countries since energy crises are getting worse and frightening. Polymer flooding by hydrophobically associated polyacrylamides (HAPAM) and its modified silica nanocomposite are a widely implemented technique through enhanced oil recovery (EOR) technology. This polymers class can be synthesized by

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anionic polymer flocculant & polyacrylamide powder

Anionic Polymer Flocculant & Polyacrylamide Powder

Moreover the current production equipment and process limit, even in the laboratory synthesis of ultra-high molecular weight products, industrial production is also difficult to achieve. Currently on the market anionic polyacrylamide generally 18 million products, a small amount of more than 20 million products are mostly from the oilfield

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