design of nonionic polyacrylamide adalah in New Zealand
design of nonionic polyacrylamide adalah in New Zealand
design of nonionic polyacrylamide adalah in New Zealand
design of nonionic polyacrylamide adalah in New Zealand
design of nonionic polyacrylamide adalah in New Zealand
molecular dynamics-assisted design of high temperature-resistant polyacrylamide/poloxamer interpenetrating network hydrogels

Molecular Dynamics-Assisted Design of High Temperature-Resistant Polyacrylamide/Poloxamer Interpenetrating Network Hydrogels

The blending model of three synthetic polyacrylamides (cationic, anionic, and nonionic) and poloxamers was first established, and then the interaction process between them was simulated by all-atom molecular dynamics. In the results, it was found that the hydrogen bonding between the amide groups on all polymers and the oxygen-

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polyacrylamide degradation and its implications in environmental systems | npj clean water - nature

Polyacrylamide degradation and its implications in environmental systems | npj Clean Water - Nature

The term ¡°polyacrylamide¡± is loosely used to describe any polymer with acrylamide present as one of the monomers. 1 More rigorously, its IUPAC nomenclature is poly (prop-2-enamide), which defines...

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molecular dynamics-assisted design of high temperature-resistant polyacrylamide/poloxamer interpenetrating network hydrogels. - europe pmc

Molecular Dynamics-Assisted Design of High Temperature-Resistant Polyacrylamide/Poloxamer Interpenetrating Network Hydrogels. - Europe PMC

2.1. Molecular Dynamics Figure 1 shows the synthetic process and chemical structures of three different types of polyacrylamides, as well as the structures of poloxamers. The structures of CPAM, APAM, NPAM, and poloxamer can be verified in the 1 H NMR spectrum (Figures S1¨CS4), which mainly show inactive hydrogens on methyl or methylene groups.

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polyelectrolyte polymers¡ªtypes, forms, and function

Polyelectrolyte polymers¡ªTypes, forms, and function

The groups include polyacrylamides (anionic, cationic, and nonionic), polyacrylates (polymeric dispersants, scale inhibitors, and water absorbing polymers), epichlorohydrin-dimethylamine polyamines (EPI-DMA), polydiallyldimethylammonium chloride (polyDADMAC¡¯s), and polyethylenimines (PEI).

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journal of applied polymer science | wiley online library

Journal of Applied Polymer Science | Wiley Online Library

ABSTRACT Nonionic polyacrylamide (NPAM) with controlled molecular weight was successfully synthesized as a gel fracturing fluid by aqueous solution polymerization.

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molecular dynamics-assisted design of high temperature-resistant polyacrylamide/poloxamer interpenetrating network hydrogels

Molecular Dynamics-Assisted Design of High Temperature-Resistant Polyacrylamide/Poloxamer Interpenetrating Network Hydrogels

Polyacrylamide has promising applications in a wide variety of fields. However, conventional polyacrylamide is prone to hydrolysis and thermal degradation under high temperature conditions, resulting in a decrease in solution viscosity with increasing temperature, which limits its practical effect. Herein, combining molecular dynamics and practical experiments, we explored a facile and fast ...

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the role of hydration degree of cations and anions on the adsorption of high-molecular-weight nonionic polyacrylamide on glass surfaces

The role of hydration degree of cations and anions on the adsorption of high-molecular-weight nonionic polyacrylamide on glass surfaces

Highlights Adsorption of high-molecular-weight polyacrylamide on glass was probed using AFM in 0.27 M LiCl, KCl, and KNO 3. Adsorbed amount of polymer on glass was in the following order: KCl > LiCl > KNO 3. The adsorption in LiCl and KCl was found to be rapid but with strong adhesion on retraction in KCl. Flat conformation and strong adhesion in KCl is attributed to binding effect of the ...

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rheology properties of underwater cement paste with nonionic polyacrylamide | iranian journal of science and technology, transactions ...

Rheology Properties of Underwater Cement Paste with Nonionic Polyacrylamide | Iranian Journal of Science and Technology, Transactions ...

Nonionic polyacrylamide was selected as anti-scouring admixture to eliminate the influence of different polymer electrical properties (Lu et al. 2022). The molecular weight of PAM is more than 10 million Daltons, and its main chain is connected with a C=O bond and an amino functional group as a branch chain structure, as shown in Fig. 2 .

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polymer flocculants

Polymer Flocculants

Definition Polymer flocculants are water-soluble polymers which can form flocs from individual small particles in a suspension by adsorbing on particles and causing destabilization through bridging or charge neutralization. Polymer flocculants are high molecular weight polymers and have hydrogen-bonding groups and/or ionic groups in the molecule.

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the thermal gelation behavior and performance evaluation of high molecular weight nonionic polyacrylamide and polyethyleneimine mixtures for in

The Thermal Gelation Behavior and Performance Evaluation of High Molecular Weight Nonionic Polyacrylamide and Polyethyleneimine Mixtures for In

The thermal gelation behavior of nonionic polyacrylamide (NPAM) and PEI was investigated, and sodium citrate (NaCit) was selected as a new retarder to prolong the gelation time. The gelation performance of NPAM/PEI gel system can be adjusted by varying NPAM or PEI concentration, and a quadratic model is developed by statistical analysis, which predicts the gelation time of NPAM/PEI gel system.

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