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.
Results
Showing 1 to 20 of 37 for “"Solvent mixture"”.
-
Use of a non-inflammable solvent mixture for the extraction of tung oil
… is a problem of considerable importance. Solvent extraction has proven more efficient and economical ln industries such as soybean and cottonseed oil extraction. It appeared feasible that tung oil might be extracted by analogous methods thus decreasing the loss of oil in the cake and …
-
Computer-aided rational solvent selection for pharmaceutical crystallization
Solvents play an important role in crystallization, a commonly used separation and purification technique in the pharmaceutical, chemical and food industries. They affect crystal properties such as particle size distribution, morphology, polymorphism etc. and therefore have consequences for the …
-
Investigation of the Colloidal Behaviour of Carbon Black and Perfluorosulfonated Ionomer in Various Solvents
… investigated at different ionomer concentration, solvent type and solvent composition. Ionomer was found to exist in three forms in solution. Extended molecule chains having a hydrodynamic diameter between 20nm to 30nm. Primary aggregates formed by the hydrophobic interaction of fluorocarbon …
-
Integration of Extrusion and Clean Fractionation Processes as a Pretreatment Technology of Lignocellulosic Biomasses
… concentration (0.12-0.93% w/w) and organic solvent mixture composition (3-44% MIBK w/w) were evaluated. The organic solvent mixture contained methyl isobutyl ketone (MIBK), ethanol and water in different proportions. Sulfuric acid was used as a catalyst. In order to evaluate the …
-
Synthesis of 2H-1-Benzthiocin: a Precursor for the Generation of the "4n+2" Pi-electron 1-Benzthiocinide Anion.
… triphenylphosphene in MeOH-H<sub>2</sub>O-DMF solvent mixture. The reaction of <strong>16</strong> with KOH in the presence of 18-crown-6 followed by addition of 1,4-dibromobutane resulted in 4-(o-formylphenthio)butyl bromide <strong>17</strong> which was converted to triphenylphosphonium …
-
Non-Aqueous Dispersion Polymerization for Automotive Coating Applications
… submicron sized particles utilized by the solvent-borne automotive coatings industry to prevent crack propagation, improve toughness and reduce energy requirements for drying. Despite its industrial significance, there have been few studies about particle nucleation and other qualities of …
-
The Development of a Novel Peptide-Drug Conjugate for Treating Triple-Negative Breast Cancer
… different conditions including aqueous-organic solvent mixture, human serum and mouse serum. The PDC was stable in aqueous-organic condition up to 10 days. In addition, its half-life in human serum was about 12 hours indicating that it is stable enough to reach the tumor sites for its activity. …
-
Understanding of Molecular Interactions and Reversibility in Silylamines
… and non-conductive, TPSA was also studied as a solvent mixture with DMSO. Variable temperature (VT) FT-IR studies showed that the RevIL to ML switch was maintained in the TPSA/DMSO system. VT conductivity studies showed a conductivity maximum at 90°C. The thermal dependence of conductivity makes …
-
Evaluation of Propane-Butane Mixtures as Solvent in ES-SAGD
… of SAGD is the co-injection of a hydrocarbon solvent with steam. In Solvent Added SAGD (SA-SAGD), a small volume fraction of steam is replaced with a hydrocarbon solvent. The latent heat of steam heats the oil while the solvent dissolves in the oil to make it more mobile. The combined impact …
-
Towards novel luminescent probes for monitoring β- galactosidase activity
… the reaction temperature, concentration and solvent mixture. The optimal conditions were found to be a 0.4 M reaction solution at pH 7.0 with 20% acetonitrile, a 7:1 ratio of glycosyl acceptor to donor, 19.6 U of enzyme per mmol of acceptor, and a reaction temperature of 30°C. The resulting …
-
The Design of Hydrogel Polymers for Artificial Liver Support Systems.
… physical entities created by freezing a monomer-solvent mixture prior to polymerization thereby creating a polymer matrix with large macropores running through it. These materials are interesting because of their greater permeability to large molecules, a property of interest if the dialytic …
-
Extraction of Capsaicin Using the Polyol Induced Extraction (PIE) Method
… an extraction technique for separating organic solvents from water, using glycerol and polyol as separating agents. Glycerol binds water releasing the organic solvent as a separate liquid phase. this thesis, investigates how the PIE process may be used to separate caffeine and capsaicin. When …
-
Lattice models of amphiphile and solvent mixtures.
… dimensional lattice model of an amphiphile and solvent mixture has been developed as an extension of earlier work in two dimensions. In the earlier investigation the simulation was carried out with three segment amphiphiles on a two dimensional lattice and cluster size distributions were …
-
Novel polymers for artificial liver support systems
… involved photopolymerisation of frozen monomer/solvent mixture in a cold n-hexane continuous phase; suspension polymerisation in brine which involved polymerisation of hydrophilic monomers in a high salt content aqueous continuous phase; and invers-suspension polymerisation of hydrophilic …
-
RECOVERY AND SEPARATION PROCESSES IN THE RECYCLING CHAIN OF POLYAMIDE PLASTIC MATERIALS TO OBTAINECO-SUSTAINABLE RAW MATERIALS
… often fail when dealing with these complex mixtures, due to degradation, contamination, or the need for extensive purification. This PhD research, carried out in collaboration with Radici InNova s.c.a r.l. (Radici Group), focused on developing and optimizing a solvent-based recycling process …
-
Structure Formation Mechanism of Isoporous Block copolymer Membranes
… solutions induced by evaporation of a binary solvent mixture of a high and low boiling solvent. During self-assembly and non-solvent induced phase separation by immersion in water, asymmetric membranes consisting of a thin top layer with closely packed pore channels with diameters below 100 nm …
-
Polymeric Nanocarriers And Their Oral Inhalation Formulations For The Regional Delivery Of Nucleic Acids To The Lungs
… particles, and solvation forces in propellant/co-solvent mixture. In light of the challenges and opportunities described above, we propose in this work: (i) a quantitatively and systematically evaluation of the enhancement in solvation capacity of propellant hydrofluoroalkane (HFA) upon addition …
-
An Investigation of Gold(I) Catalyzed Cycloaddition Reactions
… were synthesized. Macrocycles were subjected to solvent mixture (Et<sub>3</sub>N, CF<sub>3</sub>CH<sub>2</sub>OH, and Et<sub>2</sub>O), and an oxyallyl cation was presumably formed, which proceeded to react with the furan moiety to give transannular [4C+3C] cycloaddition products. In addition, …
-
Synthesis of Higher Molecular Weight Poly(D-glucaramides) and Poly(aldaramides) as Novel Gel Forming Agents
… was initiated by basification of the resulting mixture. The molecular weights of the polymers showed strong dependence on the base used in the basification step. Sodium methoxide was found superior to triethylamine for efficient deprotonation of the diammonium salt to yield higher molecular …
Page 1 of 2