Due to the importance of nanoparticles stability in industrial applications, in this research, stability of laponite nanoparticles dispersions containing different concentrations of sodium sulfonated polyacrylamide (SPA) was investigated in electrolyte media for oil reservoirs applications. In this regard, effect of parameters such as polymer concentration, temperature, and ionic strength were ...

The influence of polymeric dispersants containing different functional groups on TiO2 pigment particle suspension was investigated at pH 6.0 and 9.5, using rheology and particle size data. The dispersants chosen were polyacrylic acid and modified polyacrylamides including homo and copolymers modified with carboxylate and/or hydroxyl groups. The pigment suspension was strongly affected by both p...

We synthesized polymers displaying multiple copies of a peptide from the cystic fibrosis transmembrane conductance regulator (residues 108-117). This peptide is the minimal sequence needed for binding of Pseudomonas aeruginosa. Using an in vitro bacterial internalization assay, our preliminary results indicate that such a polyvalent ligand can prevent P. aeruginosa from attaching to (and being ...

T h e effect of Polyacrylamide as an additive on preparat ion of inverse microemulsion t o l u e n e — A O T ( A O T sodium bis(2-ethylhexyl)sul fosuccinate)—water—acrylamide—Polyacrylamide and on t h e propert ies of polymer particles resulting from t h e free-radical polymerizat ion of acrylamide was s tudied. I t was found t h a t the a m o u n t of Polyacrylamide which can be added wi thout...

Silver nanoparticles were synthesized in linear and branched polyelectrolyte matrices using different reductants and distinct synthesis conditions. The effect of the host hydrolyzed linear polyacrylamide and star-like copolymers dextran-graft-polyacrylamide of various compactness, the nature of the reductant, and temperature were studied on in situ synthesis of silver sols. The related nanosyst...

We performed a free radical polymerization of acrylamide in an aqueous solution by radio frequency-driven atmospheric pressure plasma jet. The was catalyzed simultaneous generation nanoparticles resulting percentage polymer yield increased factor 2–30 times. Polyacrylamide acted as capping agent for the silver nanoparticle formation yielding smaller while uncontrolled growth and massive particl...

Hydraulic fracturing is widely used to create cracks and increase the size connectivity of existing fractures, leading higher permeability shale rocks production unconventional hydrocarbon sources. The main chemicals in hydraulic fluids can initiate fractures reservoirs by acid induced carbonate dissolution, minimise energy loss during pumping process friction reducer enhanced fluid viscosity. ...

Geopolymers are a new type of environmentally friendly cement-based material with serious drying shrinkage problems. In order to overcome this problem and improve the engineering performance durability geopolymers, in study we added 0%, 0.3%, 0.5%, 0.7%, 0.9% polymer materials, namely, polyacrylamide, sodium polyacrylate, tetraborate, respectively, geopolymers reduce their degree shrinkage. We ...

In the present work, a grafted polymer of polyacrylamide with gum arabica was synthesized as Gum acacia-g-polyacrylamide using microwave-assisted synthesis ceric ammonium nitrate reaction initiator. The utilized in combination sodium alginate to prepare interpenetrating network hydrogel beads effectively deliver gabapentin gastrointestinal tract. formulated microbeads showed pH-responsive relea...

• Microalgae harvesting is a major bottleneck to microalgae-based biofuel production. Flocculation the most versatile, energy-efficient and cost-efficient process. Polyacrylamides exhibit high performance at different operation scales. Comprehensive analysis of polyacrylamide-microalgae flocculation was presented. Properties polyacrylamide microalgae culture influence biomass touted as highly p...