A comprehensive review on polyelectrolyte complexes
Ionized polyelectrolytes in solution can form a complex with oppositely charged polyelectrolytes — a polyelectrolyte complex (PEC). The present article …
New Hybrid Copper Nanoparticles/Conjugated Polyelectrolyte …
A hybrid composite based on metallic copper nanoparticles stabilized by a conjugated donor-acceptor polyelectrolyte (CuNP/CPE) with antibacterial activity was …
Metal–Polyelectrolyte Complexes. II. Complexes of Copper with …
Copper Nanoparticles in Polyvinyl Alcohol–Acrylic Acid Matrix: An Efficient Heterogeneous Catalyst for the Regioselective Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Click …
Metal–Polyelectrolyte Complexes. I. The Polyacrylic Acid–Copper …
Copper Nanoparticles in Polyvinyl Alcohol–Acrylic Acid Matrix: An Efficient Heterogeneous Catalyst for the Regioselective Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Click …
Copper recovery via polyelectrolyte enhanced ultrafiltration …
Section snippets Chemical and materials. All chemicals were of reagent grade. Stock copper solution of 100 mM was prepared in deionized water (DI) using copper sulfate pentahydrate (CuSO 4 ·5H 2 O, Yakuri Pure Chemicals Co. Ltd., Japan). Polyelectrolyte solution of 25 mM was prepared in DI using either PSS (30 wt% in water, MW of 70 kDa), …
Polymers | Free Full-Text | Fabrication of Eco-Friendly Polyelectrolyte
Polyelectrolyte membranes (PEMs) gained considerable attention for their health, environment and energy applications due to their promising characteristics such as multi functionality, easy fabrication, low cost, biocompatibility, biodegradability and tunable physico-chemical properties [1,2,3,4,5].Recently, polymer blends and their composites …
PolyDADMAC
It is a strong cationic polyelectrolyte existing as a kind of colorless to light yellow viscous liquid. It is a substance th... 86-10-8595 8198 marketing@Sinofloc. en es ru pt. Home; About Us. ... The Crucial Role of Mining Flocculants in Copper Mining Processes ; Sustainable Solutions: Polyamine Water Treatment in Textile ...
New copper(II) complexes of polyampholyte and polyelectrolyte …
New copper(II) complexes of polyampholyte and polyelectrolyte materials have been characterized through different spectroscopic techniques in the solid state. Significant changes in the FTIR and 13 C CP-MAS spectra were observed associated with the effects of the copper ions in the polymeric networks.
Antibacterial Layer-by-Layer Coatings for Medical Implants
The widespread occurrence of nosocomial infections and the emergence of new bacterial strands calls for the development of antibacterial coatings with localized antibacterial action that are capable of facing the challenges posed by increasing bacterial resistance to antibiotics. The Layer-by-Layer (LbL) technique, based on the alternating …
Polyelectrolyte
3.2.9.1 Polyelectrolyte complexes. Polyelectrolytes are a type of polymer that has ionizable functional groups. Polyelectrolytes in the uncharged state behave like macromolecules; however, there can be some intense changes in their properties if there is a small dissociation of ionic groups.
Sorption of Salts of Various Metals by Polyelectrolyte Microcapsules
2. Results and Discussion. As known, polyelectrolyte complexes may be used in the sorption of toxic pollutants [46,47], such as K 4 [Fe(CN) 6], K 3 [Fe(CN) 6], CuSO 4, Pb(NO) 3, FeCl 3, and CuCl 2, which are widely used or are by-products in the mining extraction and processing industries and in the production of polymeric materials, …
Expanding the structural diversity of polyelectrolyte complexes …
Polyelectrolyte complexation refers to the electrostatic association of oppositely charged polyelectrolytes (PEs) in solution with concurrent release of small molecule counterions (Fig. 1).Although electrostatic attraction was originally believed to drive PE complexation, it has since been shown that the entropic gain from release of …
Metallo-polyelectrolytes as a class of ionic macromolecules for
This copper-based polyelectrolyte greatly inhibited the growth of Gram-negative E. coli and Gram-positive S. thermophiles and S. aureus by blocking metal-binding sites in enzymes and disturbing ...
Enhanced resource recovery from wastewater using
Polyelectrolyte multilayer NF • EOS performance was significantly enhanced by using NF and PMNF membranes. • PMNF-EOS sustained water production, power generation, and metal recovery. • Abstract Mining diverse resources from electroplating …
Technical Data Sheets
Removal of arsenic from copper refinery electrolytes; Aliquat 175. Aliquat 336TG Aliquat HTA-1. Alclar ® The Alclar ® range is specific to the alumina industry and includes flocculants for use in thickeners, washers, super-thickeners, hydrate thickeners and green liquor filtration. Products also include dewatering aids and crystal growth ...
Cationic conjugated polyelectrolyte-based fluorometric detection of
A series of water-soluble cationic polyfluorene copolymer containing 2,2′-bipyridine moieties (PFP-P 1–3) in the backbone were designed and synthesized as the fluorescent probes for Cu 2+ ions. In the absence of the Cu 2+ ion, the PFP-P 2 exhibits strong fluorescence emission in aqueous solution. Upon adding the Cu 2+ ion, the PFP …
Functionalization of organic membranes by polyelectrolyte …
Different operating conditions were tested including: polyelectrolyte concentration, polyelectrolyte nature, thickness of the PEM film or pH of the Cu 2+ solutions. These filtration experiments demonstrated that it was possible to obtain a satisfactory retention of the copper ions (88%), thus proving that this type of assembly …
Metallo-polyelectrolytes as a class of ionic …
This copper-based polyelectrolyte greatly inhibited the growth of Gram-negative E. coli and Gram-positive S. thermophiles and S. aureus by blocking metal-binding sites in enzymes and disturbing ...
Copper recovery via polyelectrolyte enhanced ultrafiltration …
Three polyelectrolytes (PSS, PAA, and PEI) containing various functional groups and molecular weights were studied to explore their effects on the copper …
Copper sulfide and polyelectrolyte decorated textiles for active
A polyethyleneimine-phytic acid (PEI-PA) polyelectrolyte composite coating was constructed by simple dip-coating on the surface of cotton fiber, and a CuS coating was further in-situ grown on the polyelectrolyte coating surface (Fig. 1). The fabric decorated with a dense CuS shell layer exhibits excellent photothermal conversion and Joule ...
Polyelectrolyte modification of ultrafiltration membrane for …
Taking into account this literature, an organic membrane, modified by a polyelectrolyte multilayer film, was used to remove copper ions from contaminated aqueous solutions through ultrafiltration. The ultrafiltration polyethersulfone (PES) membrane was modified by the LbL electrostatic deposition of poly (allylamine …
Selective Electroless Nickel Plating on Polyelectrolyte Multilayer
Polyelectrolyte multilayers (PEMs) fabricated by the layer-by-layer adsorption of poly (acrylic acid) (PAA) and poly (allylamine hydrochloride) (PAH) are used to selectively bind palladium catalysts for electroless nickel plating. Depending on the pH conditions used during multilayer processing and the polyelectrolyte adsorbed last, the …
Electrochemical Response of Clay/Polyelectrolyte Composite Barrier Coatings
A copper electrode was coated with the LbL coatings made of a pH 4 MMT dispersion, and the corrosion caused by the reaction with chloride ions was investigated. The CVs of the bare copper and the coated copper electrodes in Figure 4 show that an oxidation current and a reduction current occur, respectively, in the voltage range of −0.4 …
Polyelectrolyte | Encyclopedia MDPI
0. Polyelectrolytes are polymers of oppositely charged ions and their properties differ profoundly than their repeating units. Over recent years, much advancement has been made in the synthesis, characterization, and application of polyelectrolytes and polyelectrolyte complexes (PECs). It has many applications as flocculation agents, …
Functionalization of organic membranes by polyelectrolyte …
Moreover, Fig. 4 shows that the retention rate increases when the polyelectrolyte concentration increases too, thus confirming the influence of the polyelectrolyte layers and the influence of the adsorbed polyelectrolyte amount on the retention of copper ions. 3.3.3. Copper retention by PES–[PAH–PSS] 5 –PAH assemblies
Polymers | Free Full-Text | Adsorption Behavior of Polyelectrolyte …
Polyelectrolyte adsorption at high ionic strengths may produce many counter ions to the bulk solution—thus the driving force for adsorption may be influenced by increasing entropy [29,30]. Table 1 and Figure 1 also indicate that at 10-mM NaCl, the maximum adsorbed amount of PSS ( Γ ∞ ) for α-Al 2 O 3 was 8.0 mg/g, while at 100-mM …
Water companies: water treatment works discharge limits for
For hard waters we set 0.1 times an actual 24h LC50 for the polyelectrolyte as a 95-percentile EQS. Suspended solids discharge limits to surface water The Environment Agency has a default permit ...
Sorption of Salts of Various Metals by Polyelectrolyte …
As known, polyelectrolyte complexes may be used in the sorption of toxic pollutants [46,47], such as K 4 [Fe(CN) 6], K 3 [Fe(CN) 6], CuSO 4, Pb(NO) 3, FeCl 3, and CuCl 2, which are widely used or are by-products in the mining extraction and processing industries and in the production of polymeric materials, paints, and varnishes . Therefore ...
(PDF) Screening Tests of Copper Mine Tailings
Abstract and Figures. The flocculation method had a good effect in treating copper tailings, and polyacrylamide (PAM) was commonly used as an effective …
Copper sulfide and polyelectrolyte decorated textiles for active
As a p-type semiconductor material, copper sulfide (CuS) exhibits excellent photothermal properties due to its high absorption capacity [51], [52], [53], and also has the advantages of low toxicity and low cost, making it an ideal material for …