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Showing 1 to 20 of 23 for “"Adipic acid"”.
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The electrolysis of hydrochelidonic and adipic acid
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemistry, 1901
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Mechanism by which surfactants modify adipic acid crystal growth rate and habit
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1961.
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Application of organic acid functionalized cellulose for batch and aqueous two-phase extraction of sulfonamides from different matrices
… cellulose was functionalized with oxalic and adipic acid. The resulting sorbents were then analyzed using FTIR, PXRD and SEM techniques. Based on FTIR analysis the optimal reaction time for cellulose functionalized with adipic acid and oxalic acid via hydrothermal treatment in an autoclave was …
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Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado
… The separation of carboxylic acids and amino acids, as they are biocompounds of food and pharmaceutical interest, was carried out with a new extraction technology using extractant-impregnated resins. Biocompounds are extensively used as raw materials in the chemical, …
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Polymorph Selection with Morphology Control Using Solvents and Additives
… with a well-defined morphology using additives. Adipic acid, myristic acid, oleic acid and structurally related 3-indoleacetic acid were selected as additives and their impact on the morphology and polymorphism of indomethacin were investigated in this study. Additives did not change the …
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Non-isocyanate routes to urethane-polymers
… of a novel mono-carbamate based on an amino acid has been investigated. The mechanism of the polymerization of adipic acid and hexane diol was investigated. The reaction was optimised for the high vacuum reaction in bulk and solution, as well as for the polymerisation under Dean-Stark …
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Regulation of Volatile Fatty Acid Synthesis in Megasphaera Elsdenii and Hexanoic Acid Utilisation by Pseudomonas Putida
… has two studies on processes that may lead to adipic acid production through hexanoic acid synthesis pathway by the anaerobic bacterium Megasphaera elsdenii and its subsequent utilisation by Pseudomonas strains. The first part of the research described was concerned with the ability of …
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Catalytic upgrading of muconates for renewable chemical applications
… on the catalytic conversions of cis,cis-muconic acid (cis,cis-2,4-hexadienedioic acid), a polyunsaturated C6 dicarboxylic acid that can be microbiologically produced from lignocellulosic biomass streams. The state of catalysis for Diels-Alder reactions involved in upgrading schemes of muconic …
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Co-crystallisation of α,ω-dicarboxylic acids with nicotinamide and isonicotinamide
… formed. Selected α,ω-alkanedicarboxylic acids (HOOC-(CH\(_2\))\(_{n-}\)COOH) were crystallised with nicotinamide for n = 0, 1, 2, 4, 5, 6, 7 and isonicotinamide for n = 5, 6, 7 yielding 12 new solid materials. The melting point of the starting materials and new products are determined and …
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Volatility properties of the ambient and laboratory generated aerosol
… of the N-alkanes (C12 - C40), and carboxylic acids using measurement of gas-particles partitioning of these compounds in ambient aerosols. For normal alkanes with molecular weight between 275 - 375 g/mol, most of the estimated values were very close (within 20 %) to corresponding literature …
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Exploring Chemical Crosslinking of the Extracellular Matrix as a Potential Therapy for Recurrent Glioblastoma
… investigated how brain matrix hyaluronic acid (HA) concentration and viscosity affect cancer cell migration. The results showed that higher concentrations of HA limited cell and spheroid migration in three different cell models of glioblastoma. Thus, we conclude that the brain ECM can be …
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A semi-classical model of proton tunnelling in hydrogen-bonded compounds
… a number of hydrogen-bonded species: a) Chromous acid. A consistent, quantitative explanation is found for the νs(OH)/vs(OD) bands in the mid-infrared spectra of CrOOH/CrOOD. The 226 cm⁻¹ band in the far infrared and neutron scattering spectra of CrOOH is shown to be caused by the protonic …
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Synthesis and characterization of polydimethylsiloxane-polyamide segmented copolymers
… initiated lactam oligomerization, followed by adipic acid chain extension produced interesting materials and should be further examined.
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The preparation of a polyurethane elastomer and evaluation of the mechanical properties
… Bitolyene 44’ diisocyanate and the polyester of adipic acid and ethylene glycol. The investigation consisted of the preparation of polyurethane elastomer, solvent absorption and swelling tests, tensile properties test and hardness test. Three groups of polymer material were prepared. In the first …
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Polydimethylsiloxane Containing Block Copolymers: Synthesis and Characterization of Alternating Poly(Arylene Ether Phosphine Oxide)-B-Siloxane and Segmented Nylon 6,6 -B-Siloxane Copolymers
… nylon 6,6 salt and a corresponding amount of adipic acid to afford siloxane-amide semi-crystalline copolymers with siloxane content ranging from 10 to ~45 wt%. The characterization of high molecular weight and covalent siloxane-amide linkages was hindered by insolubility. For example, …
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Topology and Telechelic Functionality Control in Polyester Design
… were synthesized from renewable monomers, adipic acid, succinic acid, and 1,3-propanediol using melt polycondensation. The molecular weights of the precursors were varied systematically to probe the influence of molecular weight on thermomechanical properties of the networks. The extent of …
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Lignin valorization
… which use NaOH and Ba(OH)2 as base and by an acid-catalyzed organosolv process. Moreover, lignin was isolated from bamboo, beech wood and coconut by soda treatment of the biomasses. A comparison of the structural features of such isolated lignins was performed through the use of a wide range …
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Metal oxide electrocatalysts for alternative energy technologies
… was converted to cyclohexanone, cyclohexene, and adipic acid on Mo-V-O, Mo-V-Te-O, and Mo-V-Te-Nb-O respectively. The present work showed that these interesting materials might potentially be utilized as a catalyst in complex alcohol fuel cell technologies. In the final section, the …
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Establishment of CRISPR-Cas-based gene deletions in Bacillus methanolicus and metabolic engineering towards the production of N-methylglutamate and putrescine
… produced by condensing biogenic putrescine with adipic acid to create a highly stable material. Putrescine itself is a linear four-carbon diamine involved in various cellular processes and stress responses in organisms, and it can be synthesized via two primary biochemical pathways: the ornithine …
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Value chain diversification in the sugar industry using quantitative economic forecasting models
… and patents, namely caprolactam, dodecanedioic acid, adipic acid and muconic acid. However, all four chemicals would feature mainly in the textiles industry, which the model identifies as not being a high growth industry and thus would limit the revenue generating potential. The main beverage …
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