Home » Portugal Non-Ionic Temperature-Resistant And Salt-Resistant Polyacrylamide Reasonable Design

Portugal Non-Ionic Temperature-Resistant And Salt-Resistant Polyacrylamide Reasonable Design

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Rotofor Manual | Chemistry | Physical Chemistry

Rotofor Manual | Chemistry | Physical Chemistry

The salt concentration in the sample was reduced to a reasonable level while the ionic strength required to maintain the stability of the enzyme was retained. If the pH gradient plateaus or dips near the middle, this may be due to the presence of excess buffer in the protein sample solution.
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(PDF) Targeted association analysis identified japonica ...

(PDF) Targeted association analysis identified japonica ...

drought, low-temperature or high-salt stress. Plant Cell 6:251– PLoS Genet 3(1):71–82 264 Zhu C, Gore M, Buckler ES, Yu J (2008) Status and prospects of asso- Yeo AR, Flowers TJ (1986) Salinity resistance in rice (Oryza sativa L.) ciation mapping in plants.
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Heat transfer and thermal storage behaviour of gypsum ...

Heat transfer and thermal storage behaviour of gypsum ...

The experimental series consisted of thermal property tests (such as thermal conductivity, specific heat, and latent heat), and some basic properties (such as …
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A novel plugging agent with heat tolerance and salt tolerance

A novel plugging agent with heat tolerance and salt tolerance

The gelling pH value of alkali lignin plugging agent system was 7-11, the salt tolerance of that reached to 20 × 10⁴ mg/L, and the temperature resistance of that was 140℃.
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Nanocomposite polymer electrolytes | SpringerLink

Nanocomposite polymer electrolytes | SpringerLink

Dec 15, 2016 · Room temperature ionic conductivities of the order of 10 −4 Scm −1 were reported for PEO/PEG blends/LiClO 4 and for the complex PVDF-CO-HFP/Zn(CF 3 SO 3) 2 with CeO 2 as nanofiller. As an effective means for increasing ionic conductivity, ceramic fillers play a vital role in polymer electrolytes.
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US5309999A - Cement slurry composition and method to ...

US5309999A - Cement slurry composition and method to ...

A method to cement wellbores in salt formations is provided using a cement slurry composition comprising blast furnace slag, water and salt. The salt improves compressive strength of blast furnace slag based cements. This method is useful in cementing wellbores within salt and potash formations because salt saturated cement slurries can be prepared without the need for …
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Evaluation of solution and rheological properties for ...

Evaluation of solution and rheological properties for ...

Sep 01, 2017 · Response to in situ reservoir stimuli (temperature, ionic strength, pH, and shear stress) also, shows good thermal, rheological and salt resistant properties even at reservoir conditions, and consequently improves sweeping efficiency. 3.
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Viscosity Study of Salt Tolerant Polymers | Request PDF

Viscosity Study of Salt Tolerant Polymers | Request PDF

The rheological characteristics of copolymers of acrylamide (AM) with sodium salt of 2-acrylamido-2-methylpropane sulfonic acid (PAMS), and of hydrolyzed polyacrylamide (HPAM) have been studied in ...
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Assembly of Polyiodide Networks with Cu(II) Complexes of ...

Assembly of Polyiodide Networks with Cu(II) Complexes of ...

Polyiodide networks are currently of great practical interest for the preparation of new electronic materials. The participation of metals in the formation of these networks is believed to improve their mechanical performance and thermal stability. Here we report the results on the construction of polyiodide networks obtained using Cu(II) complexes of a series of pyridinol …
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Development of a novel temperature-resistant and salt ...

Development of a novel temperature-resistant and salt ...

May 20, 2021 · Polymers, such as polyacrylamide polymers and guar gum, and their derivatives are usually used as thickeners for fracturing fluids because of their good temperature and shear resistance [, , ]. Additionally, the insoluble residue of these macromolecular polymers can easily plug reservoir pores and cause damage to the oil and gas reservoirs.
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design of around the end hydraulic flocculators | Provide ...

design of around the end hydraulic flocculators | Provide ...

Design of baffled hydraulic channels for turbulence-induced. Hydraulic flocculators have been used for water treatment in many countries with design based on the intensity of energy dissipation in the system usually related to ensuring that a particular value of average shear rate or velocity gradient, G, or the product of velocity gradient and retention time, G×t, is attained …
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Scheme 1. Synthesis of amphoteric polyacrylamide PASD ...

Scheme 1. Synthesis of amphoteric polyacrylamide PASD ...

Download scientific diagram | Scheme 1. Synthesis of amphoteric polyacrylamide PASD. from publication: Design and Study of a Novel Thermal-Resistant and Shear-Stable Amphoteric Polyacrylamide in ...
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Swelling performance of sodium polyacrylate and poly ...

Swelling performance of sodium polyacrylate and poly ...

Dec 19, 2019 · After 2-h of free swelling, the absorbency of the poly (acrylamide-co-acrylic acid) potassium salt decreased with increasing temperature with the peak absorbency occurring at 25 °C whereas and the lowest at 100 °C (Fig. 9a). At 25 °C, the polymer network formed hydrogen bonds with the water molecules, developing a hydration shell around the ...
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Review of friction reducers used in slickwater fracturing ...

Review of friction reducers used in slickwater fracturing ...

Feb 01, 2019 · The basic design is to add a large amount of salt-resistant monomers (such as AMPS) to the polymer backbone chain, and to use a twin-tailed nonionic hydrophobic monomer to synthesize a hydrophobically associating polymer (Mao et al., 2018). Further test showed that the DR rate of a newly synthesized FR reached about 70% at a concentration of 0 ...
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Molecular design of modified polyacrylamide for the salt ...

Molecular design of modified polyacrylamide for the salt ...

May 29, 2012 · In our work, three kinds of functional monomers were selected to modify polyacrylamide (PAM) or partially hydrolyzed polyacrylamide (HPAM) by molecular dynamics simulation so as to achieve the stronger salt-tolerance of modified HM-HPAM. The radius of gyration (R g), the hydrodynamic radius (R H), the effective length (L ef) and the intrinsic …
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Thickening mechanism of water-soluble polymer in the ...

Thickening mechanism of water-soluble polymer in the ...

Sep 17, 2021 · In enhanced oil recovery (EOR), water-soluble polymer is widely used as thickening agent to improve mobility control ability [1,2,3].Partially hydrolyzed polyacrylamide (HPAM) is the most commonly used polymer for its high viscosity in low salinity water [4, 5].However, the viscosity is found to decrease dramatically in high salinity water.
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Properties and influence of hydrophobically associating ...

Properties and influence of hydrophobically associating ...

The influence of salt and temperature on the viscosity of a hydrophobically modified polyacrylamide-based (PAM-based) novel functional polymer (RH-4) was investigated.
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Synthesis and Aqueous Solution Properties of a Novel ...

Synthesis and Aqueous Solution Properties of a Novel ...

The temperature resistance, salt resistance, and shear resistance of the copolymer solution were evaluated. The results shown that the copolymer had excellent salt‐thickening effect, favorable ...
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Polymer-to-Solvent Reference Table for GPC/SEC

Polymer-to-Solvent Reference Table for GPC/SEC

Temperature (°C) Publication number Polyanion, polyacrylamide Water + 0.05 M Na 2 SO 4 at pH 3 PL aquagel-OHEN Polyanion, polystyrene sulfonate 80 % [Water + 0.3 M NaNO 3 + 0.01 M NaH 2 PO 4 at pH 9] + 20 % Methanol PL aquagel-OHEN Polybromostyrene THF PLgelEN Polybutadiene THF PLgelEN
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