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Polyacrylamide - Wikipedia

Polyacrylamide (abbreviated as PAM) is a polymer with the formula (-CH 2 CHCONH 2 -). It has a linear-chain structure. PAM is highly water-absorbent, forming a soft gel when hydrated. In 2008, an estimated 750,000,000 kg were produced, mainly for water treatment and the paper and mineral industries. [1] Physicochemical properties

Jan 15, 2020 · The removal of the low molecular weight PAM (52.0–52.6%) through the hydrolysis of amino groups by anaerobic treatment (35 °C and 55 °C) was much higher than that of the high molecular weight (2.2 × 10 7 Da, 11.2–17.0%) observed under the same conditions.

Sep 7, 2018 · High molecular weight (10 6 –3 × 10 7 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and...

The biodegradation of polyacrylamide (PAM) includes the hydrolysis of amino groups and cleavage of the carbon chain; however, the effect of molecular weight on the biodegradation needs further investigations. In this study, biodegradation of low molecular weight PAM (1.6 × 10<sup>6</sup> Da) was eva …

Nov 1, 2004 · The effect of different low molecular weight electrolytes on reduced viscosity of polymer solution was investigated. The intrinsic viscosity was obtained as a function of charge density...

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Theoretical studies of hydrolysis and stability of

Influence of Hydrolyzed Polyacrylamide (HPAM) Molecular Weight on the Cross-Linking Reaction of the HPAM/Cr3+ System and Transportation of the HPAM/Cr3+ System in Microfractures Lei Zhang *?? Liming Zheng ?? Jingyang Pu § Chunsheng Pu *?? Shuxia Cui ?? View Author Information Cite This:Energy Fuels 201630119351-9361

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Low molecular weight polyacrylamide-based polymers as

PHPA is a white granular powder, anionic in nature having a specific gravity of 1.25 to 1.40 and a bulk density of 40 to 46 lb/ft 3. PHPA influences cuttings and wellbore stability and enhances solids removal by flocculation. It also works when used in higher concentrations in salt muds such as KCl- or NaCl.

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Biodegradation of low molecular weight polyacrylamide under

Three main products are used to enhance the viscosity of the drilling ? uid which is for instance useful to carry ef? ciently the cuttings up to the surface: Bentonite, Partially Hydrolyzed Polyacrylamide (PHPA) and Xanthan Gum. Bentonite is a phyllosilicate composed mainly of montmorillonite.

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Theoretical studies of hydrolysis and stability of

This study aimed to determine the molecular weight of a novel polymer, partially hydrolyzed polyacrylamide(HPAM), and to explore the effects of rheological properties of the polymer solution on its performance in EOR. Thepolymer was synthesized through vinyl polymerization using acrylic acid and acryl amide.

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Hydrolyzed polyacrylamide-containing wastewater treatment

This low molecular weight version of Poly (N-vinylpyrrolidone) allows the user to obtain maximum dispersive properties with the polymer but at lower solution viscosity than the higher molecular weight siblings.

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pH Induced Self-Assembly of Partially Hydrolyzed

Introduction to Polyacrylamide Gels. Polyacrylamide is ideal for protein separations because it is chemically inert, electrically neutral, hydrophilic, and transparent for optical detection at wavelengths greater than 250 nm. Additionally, the matrix does not interact with the solutes and has a low affinity for common protein stains.

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Injectability of Partially Hydrolyzed Polyacrylamide - MDPI

ences in the experimental setup and the molecular weights of the polymers. In this work, we focus on studying the DR behavior and shear stability of anionic HPAM/XG binary polymer solution. Anionic PAM is the partially hydrolyzed form of polyacrylamide with more ?exibility and relatively large molar mass. Both polymers are widely used in

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Evaluation of Highly Stable Ultrahigh-Molecular-Weight

This study aimed to determine the molecular weight of a novel polymer, partially hydrolyzed polyacrylamide(HPAM), and to explore the effects of rheological properties of the polymer solution on its performance in EOR. Thepolymer was synthesized through vinyl polymerization using acrylic acid and acryl amide.

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