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May 26, 2017 · Several studies show that oleate has strong collecting ability at relatively high temperatures but is quite sensitive to slimes, low temperature (lower that 15 • …

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Oct 12, 2021 · The CS NPs embedded in the wound dressings allow for a double sustained release to reduce the cytotoxicity and resistance of the encapsulated drug while achieving sustained healing. In addition, due to the enhanced permeability of oparticles for superficial diffusion, CS NPs can treat infected wounds on a large scale and promote scar-free ...

Mar 0ease in the demand of dyes, the dye wastewater is becoming a major environmental threat. Adsorption techniques are widely used to remove dyes from wastewater using clay minerals, especially a naturally available one-dimensional palygorskite due to high surface area, moderate cation exchange capacity, excellent salt …

Feb 15, 2019 · Moreover, HPAM is resistant to bacteria attack, it has good water solubility, mobility control and it is a low-cost polymer [25, 33]. However, HPAM is very susceptible and sensitive to harsh reservoir conditions such as elevated temperature, high salinity, shear forces and hardness [ 23 , 34 , 35 ].

Feb 02, 2019 · Sesbania gum (SG) is a natural polymer that is widely used as a substitute for guar gum in various industries because of its similar performance and relatively low price [1,2,3].SG originates from the endosperm of Sesbania seeds, and is a novel type of galactoman gum that has received significant attention to date [4, 5].SG is insoluble in organic solvents, but partially …

Mar 08, 2021 · It is the second most abundant natural carbuding low price, nontoxicity, ease of chemical modification and processability. Obtained from renewable sources such as potato, corn, wheat and rice and capable of being processed in water-based solvents, starch is definitely a green material considered as a potential ...

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There are two categories of Anionic, Cationic type. .Temperature Tolerant and Salt Resistant Polyacrylamide Anionic . Temperature Tolerant and Salt Resistant Polyacrylamide Anionic, US $ 1.8 - 2.5 / Kilogram, Chemical Auxiliary Agent,-8, temperature tolerant urce from Yixing Bluwat Chemicals.

Apr 21, 2021 · 1. Introduction. In 1976, the United States Department of Agriculture introduced polymers with water absorbency called superabsorbent polymers (SAPs) [], which have found wide auding: gardening, agriculture, cosmetics, controlled drug release, hygiene products, and wastewater treatment [2,3].These extraordinary polymer …

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Mar 27, 2020 · 1.1. Polymers Used in Hybrid Hydrogels. There are four main types of natural biodegradable polymers used in hybrid hydrogels descruding []: (1) homopolysaccharides, as: cellulose and derivatives, pullulan, dextran, starch, etc.; (2) heteropolysaccharides from which can be mentioned: chitosan/chitin and their derivatives [], …

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Oct 20, 2009 · Effect of Polyaniline additions on structural and gas sensing behaviour of metal oxides thin films Author(s): Mohammad Hafizuddin Hj.

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Polyacrylamide material. Acrylamide is a white crystalline chemical substance and is a raw material for production of polyacrylamide. Polyacrylamide (Polyscrylamide) briefly called PAM, is commonly known as flocculants or aggregation agent. It is divided into anionic, cationic ...

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Nov 30, 2020 · PPP being resistant to oxidation and temperature is an exception to this general rule. However, reactivity plays a minor role in the case of doped polymers due to their oxidized state [ 1 , 2 ]. Although researchers have investigated this topic for at least 40 years, it is still not clear which structural characteristics of (intrinsically ...

May 26, 2017 · The synergetic effect of four octaphenyl polyoxyethyienes (TX) on low temperature flotation of scheelite at 9–11 °C was investigated through flotation experiments, and the adsorption mechanism was studied by way of surface tension, zeta potential, and adsorption measurement. The results show that the presence of the four octaphenyl polyoxyethyienes can …

In a salty medium, for S-4IPNC, S-3IPNC the maximum water absorbance was observed at low sodium salt concentration (0.2M) to reach (192.8g/g) and (178 g/g) respectively, then it decreases ...

Jan 24, 2022 · Therefore, Ni et al. studied the hydrophobic association of three fluorocarbon modified polyacrylamide copolymers P (AM-AANa-3F), P (AM-AANa-6F) and P (AM-AANa-12 F) at mesoscopic scale by dissipative particle dynamics simulation method, and found that P (AM-AANa-12 F) copolymer is the most salt-resistant, high temperature resistant and shear ...

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Jan 01, 2022 · 1. Introduction. Water-soluble polymers are widely used in water treatment , medicine , agriculture , , energy , , , .In particular, sodium polyacrylate (PAA) has the advantages of high efficiency, low price and pollution-free .However, the problem of poor salt tolerance and temperature resistance has also been exposed , , , , .. In order to solve the above problems, a …

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Jun 10, 2021 · The advantage of this method is the high speed, rapidity and reproducibility, ease of operation, large-scale implementation and low price of products [74,75]. The main disadvantage of this method is the use of high temperatures causing a reduction in bacterial survival rate [ 76 ] and difficult to use for small applications [ 77 ].

Mar 15, 2021 · Sodium alginate (NaAlg) is a natural polysaccharide extracted from brown algae and seaweed. It is a linear binary copolymer composed of β-D mannuronic acid (M blocks) and α-L guluronic acid (G blocks) [23,24] ().Different block ratios and different molecular weights lead to different physical and chemical properties [].Alginate has been widely used as a membrane …

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Apr 15, 2021 · The molecular structure of cationic (a) and anionic (b) polyacrylamide (PAM), chitosan (c), starch-g-PAM (d), starch-g-PAA (e) (Lapointe and Barbeau, 2020; Shogren et al., 2009). Anionic polymers such as APAM in Fig. 4 (b) can be prepared by the polymerization and partial hydrolysis of acrylamide, or copolymerization of acrylic acid and acrylamide.

The interaction of polyacrylamide (PAM) with conventional anionic (sodium lauryl sulphate, NaLS) and gemini anionic (sodium salt of bis(1-dodecenyl succinimic acid), represented as NaBDS ...

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Oct 17, 2019 · Han et al. developed a JL-1 low-alkali liquid accelerator, using sulphoaluminate and neutral sodium salts as the main accelerators. Polymer polyacrylamide was used to optimize the accelerator and improve its cohesiveness. The effect of the accelerator showed that the initial setting time was 2–4 min and the final setting time was 6–10 min.

And a variety of functional groups are introduced into the polymer to enhance the anti high temperature property and salt resistance. There are more than 150 production equipments, and the annual production capacity is over 30,000 tons. And new environment al cementing and drilling additives are being developed and upgraded by our R&D team.

Hydrolyzed partially polyacrylamide (HPAM) as a synthetic polymer is extensively used in oil reservoirs during polymer-based EOR, especially due to its relatively low price (Gao, 2014; Pogaku et ...

Apr 08, 2021 · It has viscoelasticity at low concentration (<0.5% w/w) and shows good stability in mineralized water containing a high concentration of divalent cations at a high temperature (>70°C) and high salt (186 g/L TDS). It has acceptable adsorption values on sand and clay and shows good injection capacity in Darcy Gildehaus sandstone.