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Showing 1 to 20 of 28 for “"Polyacrylate"”.
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The quenching characteristics of sodium polyacrylate solutions.
… of a range of concentrations of sodium polyacrylate, a commercially available polymer quenchant, have been studied. These solutions showed a stable film boiling stage the duration of which increased with increasing concentration. The maximum surface heat transfer coefficients were …
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Alkaline Potassium Polyacrylate Electrolytes for Rechargeable Zinc-Manganese Dioxide Batteries
… were conducted with the alkaline potassium polyacrylate electrolytes (PPAE) that were formed by this process. The first focused on the 1-electron reaction region for the MnO<sub>2</sub> cathodes. The fundamental and commercial aspects of use in rechargeable Zn–MnO<sub>2</sub> batteries as an …
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A Study of the Polyacrylic Acid - Sodium Hydroxide System Using Thin-Film Dialysis
… attempting to determine the transport number of polyacrylate ions, Wall found a significant fraction of the sodium ions present to be associated with the polymer. This fraction increased with increasing degree of neutralization.
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A Hydrogel Based Thermal Management System for Lithium-ion Batteries
… safety. In this study, a water based sodium polyacrylate (PAAS) hydrogel thermal management system is developed to handle the heat surge during the operation of Li-ion battery pack. This BTM system is tested through a series of high-intensity discharge and abnormal heat release processes, and …
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Development of Sustainable Thermoplastic Elastomers
… temperature. The alkyl side-chain length of the polyacrylates (as well as the related midblock composition of SAS) was utilized as a convenient parameter for tuning the physical properties of SAS, including the melting temperature and viscosity of the midblock polyacrylate, melt viscosity of SAS …
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Measuring and Developing a Control Strategy for Odorous Gases from Solids Handling Processes of a Large Wastewater Treatment Plant
… of an amine, and several sulfur compounds, and a polyacrylate fiber for the analysis of predetermined volatile fatty acids. Calibration curves were developed within the ranges 0.0004 and 2.9943 ppmv for sulfides and 0.0228 and 2.3309 ppmv for fatty acids and showed R2 greater than 0.99 . A one …
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Nonlinear Electromechanical Deformation of Isotropic and Anisotropic Electro-Elastic Materials
… response of tubular DE transducers (silicone and polyacrylate materials) with respect to combined electrical and mechanical stimuli is obtained experimentally. It is shown that the silicone samples have better dynamic and static sensing characteristics than the polyacrylate. The theoretical …
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Solubilisation of organic compounds of different polarity by interpolyelectrolyte complexes based on copolymer micelles
… chloride (PDADMAC) and sodium polyacrylate (NaPA) were studied under variation of the Mw of PDADMAC. The effect of the hydrophobic modification of NaPA with dodecyl alkyl side chains was studied by a detailed characterization of the phase behaviour and by the use of various …
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Solid phase microextraction of amino-dinitrotoluenes in tissue.
… depuration in clean reconstituted hard water. Polyacrylate-coated (PA) SPME fibers were then deployed and agitated in tissue homogenates containing metabolically-generated ADNTs for 48 hr to provide a measure of available ADNTs. Extractability of ADNTs from T. tubifex tissue containing …
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Sample Preparation/Concentration for Trace Analysis in GC/MS (A study of solid phase microextraction and headspace sampling)
… technique. The behavior of di(methylsiloxane), polyacrylate and Carbowax coatings on SPME fibers for compounds having different functional groups were investigated. The selectivities of the coating, sample pH and the sample temperature were investigated.
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Impact Mechanics of PMMA/PC Multi-Laminates with Soft Polymer Interlayers
… with two thermoplastic polyurethane and four polyacrylate interlayers. Quantitative metrics from force and displacement signals, along with post-impact damage observations, are used to compare impact performance between configurations and impact velocities (12 and 22 m/s). In general, the …
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Active Response of Polymer Materials from External Stimuli – Solvents and Light; Grafting Reactions on Perovskite Layers
… Micron sized wires made with azobenzene-polyacrylate, exhibited a bending behavior when irradiated with 365 nm UV light and recovered under visible light. The bending behavior can be as slow as several minutes per degree while recovery was relatively faster.</p> <p>Additional efforts with …
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The mechanical and other properties of ionomer cements
… humidity due to a greater extent of aluminium polyacrylate formation than in the ASPA cement. The rapid set of the ASPA system was also reduced by replacing the ionleachable glass with various fillers. The mechanical properties of these filled ASPA cements were dependent upon the physical …
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Hybrid organic-inorganic nanomaterials for applications at the biointerfaces
… at the surface with stimuli-responsive polymers (polyacrylate and/or polyacrylamide) or specific chemical functionalities (amine functionalisation, sulphur functionalisation). As to the biomolecular counterpart, the performed study involved proteins (ferritin and albumin), drugs (curcumin), …
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Expansive mineral growth and concrete deterioration: a microstructural and microanalytical study
… inhibitor chemicals, polyphosphonate, polyacrylate, and phosphate ester, were effective in reducing the formation of ettringite and also in reducing concrete expansion due to ettringite. Phosphonate inhibitors are the most effective among those inhibitors. These inhibitors are not …
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Cationic amphiphilic synthetic macromolecules with superior antibacterial activity
… and hemolytic activities of amphiphilic polyacrylates and poly(vinyl esters). Acrylate homopolymers with various lengths of alkyl pendant groups displayed high antibacterial activity against Staphylococcus aureus (S. aureus) and very low hemolytic activity toward red blood cells (RBCs). …
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Development of core-shell nanostructure encapsulating gentamicin as efficient drug delivery system against intracellular Salmonella
… acrylate) blended with sodium polyacrylate (PAA<sup>-+</sup>Na) and complexed with the polycationic antibiotic gentamicin. N1 showed 20-25 fold higher gentamicin loading than the currently existing materials and reduced numbers of viable <i>Salmonella</i> in the liver and spleen …
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Surface Forces between Silica Surfaces in CnTACl Solutions and Surface Free Energy Characterization of Talc
… γ<sup>LW</sup> and γ<sup> -</sup>. SOPA (sodium polyacrylate) increased greatly the zeta-potentials instead of the surface free energies.
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Reversible chemistry to control the synthesis and folding of polymeric materials
… dichroism (CD). In another part of this work, a polyacrylate chain was functionalized with a proportion of permanently anchored BTAs, and with some which were dynamically attached via thermally reversible Diels-Alder adducts. We varied the environmental parameters of the reversible reaction. We …
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UNDERSTANDING AND MODELING THE SORPTION ON ANION EXCHANGE RESINS USING POLY-PARAMETER LINEAR FREE-ENERGY RELATIONSHIPS AND PHASE CONVERSION
… followed far behind by A860 (strong base polyacrylate). This is due to differences between the resins, such as the hydrophilicity, the density of the ion exchange group, and the presence of aromatic rings within the matrix structure. Although the modeling method accurately predicted the …
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