low molecular weight polyacrylamide dosas dutch oilefiled
low molecular weight polyacrylamide dosas dutch oilefiled
low molecular weight polyacrylamide dosas dutch oilefiled
low molecular weight polyacrylamide dosas dutch oilefiled
low molecular weight polyacrylamide dosas dutch oilefiled
high-temperature-resistant, low-concentration water

High-Temperature-Resistant, Low-Concentration Water

Results from evaluation experiments show that the strength of MF-7 can reach H grade even at polyacrylamide concentrations as low as 0.3%. The temperature resistance of the weak gel system is up to 100 ¡ãC, and no syneresis occurs after 330 h at 95 ¡ãC.

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biodegradation of low molecular weight polyacrylamide under

Biodegradation of low molecular weight polyacrylamide under

The molecular weight was reduced from 1.6 ¡Á 10 6 to 6.46¨C9.31 ¡Á 10 5 Da for the low molecular weight PAM, while the high molecular weight PAM declined from 2.2 ¡Á 10 7 to 3.76¨C5.87 ¡Á 10 6. The hydrolysis of the amino group of the low molecular weight PAM was easier; however, the cleavage of its carbon chain was still difficult.

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polyacrylamide degradation and its implications

Polyacrylamide degradation and its implications

High molecular weight (10 6 ¨C3 ¡Á 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...

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mechanical degradation of polyacrylamide at ultra high

Mechanical degradation of polyacrylamide at ultra high

The change in polyacrylamide size distribution was evaluated by size exclusion chromatography. The peak polymer molecular weight (MW) after a single-pass through the capillary decreased from 10 7 to 7 ¡Á 10 5 Da at deformation rate = 4 ¡Á 10 6 s ?1.

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chemical degradation of polyacrylamide during hydraulic

Chemical Degradation of Polyacrylamide during Hydraulic

Polyacrylamide (PAM) based friction reducers are a primary ingredient of slickwater hydraulic fracturing fluids. Little is known regarding the fate of these polymers under downhole conditions, which could have important environmental impacts including decisions on strategies for reuse or treatment of flowback water. The objective of this study was to evaluate the chemical degradation of high

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spotlight on the life cycle of acrylamide-based polymers

Spotlight on the Life Cycle of Acrylamide-Based Polymers

Polymeric flocculants, high molecular weight polymers, are efficient at low dosage and very popular in wastewater treatment . For sludge treatments, consumption of a cationic polyacrylamide of 5.4 g¡¤kg ?1 of total solids is found to be the best economical solution [ 89 ].

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the thermal gelation behavior and performance evaluation of

The Thermal Gelation Behavior and Performance Evaluation of

Jia et al. [19,20] reported that the gel formed by high molecular weight HPAM and PEI showed better thermal stability than that formed by low molecular weight HPAM at 40 and 65 ¡ãC at the same concentration, due to its more complex network skeleton. The larger is the molecular weight of the polymer, the stronger is the gel strength . The dosage

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polyacrylamide

Polyacrylamide

Polyacrylamide (abbreviated as PAM or pAAM) 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.

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effects of physicochemical properties of polyacrylamide (paa

Effects of physicochemical properties of polyacrylamide (PAA

Polyacrylamide [IUPAC poly(2-propenamide), hereafter PAM] is a polymer (¨CCH 2 CHCONH 2 ¨C) formed from acrylamide subunits. Polyacrylamide with only acrylamide monomers is nonionic; other monomers such as acrylate or 2-acrylamido-2-methylpropane sulfonate (AMPS) can be copolymerized at various percentages to form anionic PAM.

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water soluble polymer flocculants: synthesis

Water Soluble Polymer Flocculants: Synthesis

The effect of polyacrylamide molecular weight, 10 4 and 10 6 , and concentration, 3¨C53 mg mL ?1, on adsorption to gold and silver plates was investigated using QCM-D. 180 A lower amount of higher molecular weight polymers was required to form a thick layer than lower molecular weight polymers, as seen in Figure 27. This information can

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