equal 2540tr copolymer apam anionic polyacrylamide
equal 2540tr copolymer apam anionic polyacrylamide
equal 2540tr copolymer apam anionic polyacrylamide
equal 2540tr copolymer apam anionic polyacrylamide
equal 2540tr copolymer apam anionic polyacrylamide
fabricating an anionic polyacrylamide (apam) with an anionic block

Fabricating an anionic polyacrylamide (APAM) with an anionic block

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 KM; (3) characterize the chemical st...

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fabricating an anionic polyacrylamide (apam) with an anionic block

Fabricating an anionic polyacrylamide (APAM) with an anionic block

Ultraviolet (UV)-initiated template polymerization (UTP) was used as a feasible strategy to prepare a novel anionic polyacrylamide (APAM) with a microblock structure. In the template copolymerization system, acrylamide (AM) and sodium allylsulfonate (SAS) were used as monomers, and poly (allylammonium chloride) (PAAC) as a template.

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polyacrylamide degradation and its implications in environmental

Polyacrylamide degradation and its implications in environmental

The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil conditioning. 1, 9,...

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evaluation a self-assembled anionic polyacrylamide flocculant for the

Evaluation a self-assembled anionic polyacrylamide flocculant for the

Anionic polyacrylamide (APAM) as an important flocculant possess the advantages of high molecular weight, acceptable flocculation performance, low cost and green [4]. The anionic chemical groups in APAM are able to neutralize the positive charge of colloid particles in the wastewater and lead them to crash, aggregate and settle.

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anionic polyacrylamide - santos

ANIONIC POLYACRYLAMIDE - Santos

Anionic polyacrylamide is the copolymer of acrylamide and acrylic acid. No studies on the environmental fate of polyacrylamide are available. As a high-molecular weight, water-soluble polymer, it is not expected to biodegrade or bioaccumulate. Anionic polyacrylamide has a low acute toxicity concern to aquatic organisms.

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understanding effect of fluid salinity on polymeric drag reduction in

Understanding effect of fluid salinity on polymeric drag reduction in

The functionalized anionic polyacrylamide shown better salt-tolerance compared to the base anionic polyacrylamide. ? A predictive model was designed to capture the observed effect of fluid salinity on the drag reduction performance. ?

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water soluble polymer flocculants: synthesis, characterization, and

Water Soluble Polymer Flocculants: Synthesis, Characterization, and

The reduction in the negative zeta potential was found to be considerably greater in the presence of cationic polyacrylamide than anionic and amphoteric polyacrylamide, due to an increased adsorbed layer thickness of cationic polyacrylamide. 208 Amphoteric polymers exhibit both cationic and anionic behaviors, and their strength and a relative number of sites vary depending on surface charge

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fabricating an anionic polyacrylamide (apam) with an anionic block

Fabricating an anionic polyacrylamide (APAM) with an anionic block

Results showed that the novel anionic microblock structure was formed in the template copolymer. Besides, the results of the association constant ( KM) indicated that the copolymerization followed I Zip-up (ZIP) template polymerization mechanism, which indicated the formation of the microblock structure again.

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synthesis and characterization of amphoteric polyacrylamide by

Synthesis and characterization of amphoteric polyacrylamide by

Comparing with cationic polyacrylamide (CPAM) and anionic polya-cylamide (APAM), AmPAM has the advantage of the anti-polyelectrolyte effect [7] and a wide application range of pH value.[8 ¨C11] The main types of methods for producing AM-based polymers include aqueous solution polymerization,[12] dispersion polymerization,[13] inverse emulsion (mi...

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the underlying mechanism in gel formation and its

The underlying mechanism in gel formation and its

In this paper, anionic polyacrylamide (APAM), as a common constituent in most oilfields produced water, plays a determined role in ultrafiltration (UF) process, for it may not only impact membranes fouling but also enhance the intercept ability of other pollutants (Yi et al. 2011 ).

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