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Showing 1 to 14 of 14 for “"Poly(diallyldimethylammonium chloride)"”.
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Development Of Ionic Liquid Swelled Poly-Electrolyte Membranes For Use In Dye-Sensitized Solar Cells
<p>Poly(diallyldimethylammonium iodide) (poly(DADMAI)) was obtained from poly(diallyldimethylammonium chloride) (poly(DADMAC)), via a simple ion exchange. This novel polyelectrolyte was then swelled with 1-alkyl-3-methyl imidazolium iodide and used in dye-sensitized solar cells (DSSC). It was …
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Development of Colloid Displacement Lithography Platforms for Sensor Applications
<p>In this work, Poly (diallyldimethylammonium) chloride - (PDDA) was used as a base layer for developing colloid displacement lithography platforms for sensor applications. Previous work shows that glass coated with PDDA and exposed to gold acts as a good platform for colloid displacement …
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Nanoscale surface modification of wood veneers for adhesion
… attachment of amine containing water soluble polyelectrolytes provides a path to create functional surfaces in a controlled manner. Furthermore, modification of the surface can be performed using layer-by-layer (LbL) assembly, where the adsorption of polyelectrolytes or nanoparticles in …
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Development of a Novel Perfluoroalkyl Substance Sequestration Scheme Using Alginate Macrobeads and Common Water Treatment Polymers
… pumps were used to demonstrate that the cationic polymers poly(diallyldimethylammonium chloride) (polyDADMAC) and epichlorhydrin dimethylamine (EpiDMA) could be reliably and passively delivered to promote sequestration of PFASs. It was found that pumps behaved as expected with one failure near the …
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Novel conducive alkaline polymer membranes for fuel cells
… of anion exchange membranes synthesised from poly (2, 6-dimethyl-1, 4-phenylene oxide) (PPO) have been investigated for water electrolysis applications. The prepared membranes were characterised using electrochemical impedance spectroscopy, infrared spectroscopy and thermal gravimetric …
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Increased Control over Gold Colloid Adsorption on Substrates for Colloid Displacement Lithography
… cleaned glass surface that is coated with poly(diallyldimethylammonium chloride) (PDDA) and then with 5- or 10- nm gold colloid particles. The optimum conditions include the use of very low molecular weight PDDA (Avg MW <100,000 g/mol) or low molecular weight PDDA (Avg MW 100,000-200,000 …
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Analytical separations using packed and open-tubular capillary electrochromatography
… focuses on the open-tubular mode of CEC and the polyelectrolyte multilayer (PEM) coating approach. In the first study of this part, poly (diallyldimethylammonium chloride), PDADMAC, was used as the cationic polymer and poly (sodium N-undecanoyl-L-glycinate), poly (L-SUG), was used as the anionic …
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Controlled Surface Layer Deposition for Steel Surface Hardening
… suspended in ethanol using the charging agent poly(diallyldimethylammonium chloride) (PDADMAC). EPD: The present work demonstrated the importance of assessing the electrophoretic mobilities of both the suspensions and solutions since the latter plays a critical role in interpretation. Algebraic …
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Kinetic Decay of a Polymer/Ink Complex as an O2 Indicator
… indigotetrasulfonate (ITS) encapsulated in the polyelectrolyte poly(diallyldimethylammonium chloride) (polyDADMAC). Sodium bisulfite (NaHSO<sub>3</sub>) was used as the initial oxygen scavenger and to drive the reduction of the ITS. Studies were predominantly done in solution phase through the …
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POLYELECTROLYTE NANOPARTICLE MEMBRANES AT WATER-WATER INTERFACES
… oppositely charged nanoparticles (NPs) and polyelectrolytes (PEs) on aqueous two-phase systems (ATPSs) provides a scalable route to assemble functional, stimuli-responsive membranes. The aim of this thesis is to identify the membrane self-assembly mechanism of such systems. We study two …
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Prospective retarders for alkali-activated slag: stability at high alkalinity, effects on setting behavior and strength of paste
… by manufacture of ordinary Portland cements. Geopolymers or alkali-activated systems with precursors as fly ash, slag or metakaolin, or a mixture of these, are possible substitutes. There are several hindrances to their use in construction due to the lack of understanding and control of …
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Rapid molecular signature analysis of pseudomonas aeruginosa by direct nanomolar detection of quorum sensing and biomarker molecules at a boron-doped diamond electrode
… for barakacin was improved using Nafion or poly (diallyldimethylammonium) chloride (PDDA) with multiwalled carbon nanotubes (MWCNTs) to modify the BDD electrode through a layer-by-layer assembly technique. Also, the performance of the modified BDD electrode for the detection of barakacin was …
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Bio-inspired Cellulose Nanocomposites
… lignocellulosic composites from isolated wood polymers namely cellulose and lignin, with a lamellar architecture. In the first phase of the study, adsorption of alkali lignin onto cationic surfaces was investigated using a quartz crystal microbalance with dissipation monitoring (QCM-D). …
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Nonlinear Optically Active Ionically Self-Assembled Monolayer Thin Films of Organic Polymers Intercalated with an Inorganic Hectorite, Laponite RD
… studies are presented of thin films containing a polycation, a nonlinear optically (NLO) active chromophore, and a synthetic hectorite that self-assemble into the noncentrosymmetric structure required for second order nonlinear optical responses. UV/Vis spectroscopy and ellipsometry were used as …