Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Triethanolamine"”.
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Preparação e caracterização de complexos multicomponentes contendo ciclodextrinas e benznidazol
… The influence of seven hydrophilic polymers, triethanolamine (TEA) and 1-methyl-2- pyrrolidone (NMP) in benznidazole apparent aqueous solubility, as well as the formation of inclusion complexes was also investigated. The interactions in solution were predicted and investigated using phase …
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Fungal biodeterioration of synthetic metal working fluids
… was assessed. The metal working fluid components triethanolamine and diethanolamine borate were found to be readily available nutrient sources for growth of the isolates, the extent of growth being limited by the availability of carbon rather than nitrogen. Varying the initial pH of the medium was …
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Synthesis, Characterization, Critical Micelle Concentration and Antimicrobial Activity of Two-headed Amphiphiles
… series for each amphiphiles were made in 0.9% triethanolamine solution. The CMCs were measured at two pH ~9.2 and 7.4. The CMCs were determined by plotting I1/I3 vs. concentrations. The CMCs were decreasing with increasing chain length. The CMCs for the 2CCbn series are lower than the 3CCbn …
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Synthesis and characterization of cadmium selenide and zinc selenide nanoparticles
… passivating agents such as cysteine or triethanolamine (TEA) induced the solubility of the nanoparticles in water, while the solubility of the nanoparticles in the organic solvents was facilitated by hexadecylamine (HDA). The evidence for the formation of the nanoparticles with a desired …
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Interações da trancinolona com ciclodextrinas em sistemas multicomponentes
… with cyclodextrins and co-solvents (triethanolamine TEA and N-methylpirrolidone NMP) was held to solubilize the drug and explain the involved interactions. Phase-solubility diagrams showed that triamcinolone was solubilized forming incredible stable complexes with cyclodextrins, in …
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Exploring Simple Catalyst for Transfer Hydrogenation of Ketones and Photocatalytic Hydrogen Production Using Homogeneous Metal Complexes
… (Ru(bpy)3)2+) and an electron donor (triethanolamine). Although water was initially believed to be the source of protons that were reduced to H2, analysis of control experiments pointed to the hydrogen source being the electron donor.
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Visible Light Cured Thiol-vinyl Hydrogels with Tunable Gelation and Degradation
… light exposure requires usage of co-initiator triethanolamine (TEA) at high concentration (∼200 mM), which reduces cell viability. Therefore, the first objective of this thesis was to develop a new method to form poly(ethylene glycol)-diacrylate (PEGDA) hydrogel without using TEA. Specifically, …
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Dendronized Amphiphilic Copolymers Synthesized from Methacrylate Derivatives as Potential Topical Microbicides
… polymers were studied in 5 w/v % aqueous triethanolamine (aq TEA) at a concentration of 12.5 mg/mL. Clear, homogeneous solutions of the deprotected macromonomer, MIII(OH), homopolymer, PMIII(OH), and MIII(OH)/MMA copolymer series were observed; copolymer solubility decreased as the …
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Synthesis, Characterization, and Antimicrobial Activity of Water-soluble, Tri-carboxylato Amphiphiles
… solubility in water. The solubilities in aqueous triethanolamine solution of the three series containing mobile hydrophobic moieties are 19,500 to 25,700 μM depending on the formula weight of the homolog, while those containing rigid cholestane moieties are 18,900 and 17,400 μM. Having eliminated …
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A facile hybrid method to synthesize metal and metal chalcogenide nanoparticles using various capping groups
… The use of water soluble ligands such as triethanolamine (TEA) and cysteine is also reported. The synthetic method involves the reduction of a metal salt followed by the introduction of the chalcogenide source in the case of metal chalcogenide nanoparticle synthesis. The metal or metal …
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Synthesis and shape control of functionalized cadmium telluride nanoparticles
… L-cysteine ethyl ester hydrochloride and triethanolamine were used as capping agents. The absorption and photoluminescence spectroscopy, fourier transform infrared spectroscopy, powder X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy …
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Thermodynamics and kinetics of ion-exchange in perchlorate-selective poly(vinylbenzyltrialkylammonium chloride) matrices
… amines, such as trimethylamine (TMA) and triethanolamine (TEOA), exhibit relatively low selectivity but faster exchange kinetics. An IXFC based on the asymmetric hexadecyldimethylamine (HDMA) displays high effective capacity for perchlorate and relatively fast exchange kinetics, and …
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Experimental investigation of U-Pipe evacuated tube solar collector: thermal performance enhancement methodology
… of MWCNT and consistent properties of the HTF, triethanolamine (TEA) is proposed to be incorporated as a dispersant. The samples were each tested in a Thermogravimetric Analyzer (TGA) and Differential Scanning Calorimeter (DSC) to analyze their thermal properties. To assess homogeneity of the …
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Thermal Performance Modeling of a Novel Dual-PCM Evacuated U-Tube Solar Collector
… of MWCNT and consistent properties of the HTF, triethanolamine (TEA) is proposed to be incorporated as a dispersant. Thermal analysis tests show 12.4% enhancement of specific heat capacity of the proposed HTF mixture as well as nearly 5◦C depression of freezing onset temperature. Subsequently, a …
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Synthesis, Characterization, Critical Micelle Concentration and Biological Activity of two-Headed Amphiphiles
… for measuring surface tension for a series of triethanolamine/2CAmn solutions to establish the concentration required for detergency. The CMCs for the 2CAmn series were found to decrease in value from 3.0 Ã 10â 2 M (2CAm13) to 1.7 Ã 10â 4 M (2CAm21) in a linear fashion [log CMC = (â 0.28 ± …
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Boosting Biodetection Signals via Photopolymerization: Strategies for Photocatalyst Amplification
… stoichiometrically by α-aminoalkyl radical of triethanolamine (TEOA) and reduced eosin Y radical produced during the eosin Y/TEOA photocatalysis. We also identified eosin Y degradation pathways from the reduced eosin Y radical at low oxygen levels. These degradation reactions suggested coupling …
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Lignin valorization
… previously obtained by condensation of triethanolamine and adipic acid. The influence of the lignin source and content on the thermochemical and mechanical properties of the final material was investigated. The prepolymer showed adhesive properties towards aluminum and its shear strength …
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Self-healing strain-hardening cementitious composites (SH2CC) for cyclic loading environments
… increasing fly ash (FA) content or incorporating triethanolamine (TEA) based on micromechanical models, which showed reduced tendency of fibre rupture and thus improved ductility under the high-rate reversed cyclic loading. Thirdly, traditional SHCC has exhibited satisfying CW control below 100 μm …