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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 20 of 29 for “"Water sorption"”.
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Water Sorption Properties of Homoionic Clay Minerals
Made available in DSpace on 2014-12-04T19:13:31Z (GMT). No. of bitstreams: 1 0013577.pdf: 5258230 bytes, checksum: fac19303b19949b60507538f0426d583 (MD5) Previous issue date: 1955
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The ion release behaviours and water sorption of novel resin-based calcium phosphate cement
… of Ca and PO4 ions released, and to measure the water sorption (WS) of these resins. An in vitro study was conducted by formulating resin composite using TCP as the filler mixed with EBPADMA, HmDMA, and HEMA as the resin matrix. One-hundred- sixty samples were prepared, 40 samples of each filler …
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Determination of Chemical Activity of Soybean Proteins and Amino Acid Model Systems From NMR Relaxation Data in Relation to Water Sorption Isotherms
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1994.
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Water Vapor Sorption by Soy Proteins, Proteinates and Hydrolysates
Sorption data were obtained using the Proximity Equilibration Cell to equilibrate a sample to the water activity (a(,w)) of a saturated salt slush or by equilibrating a calibrated reference material to the a(,w) of a sample. Soy isolate dispersed in water, heated for 10 and 30 minutes at …
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Investigation of Moisture Sorption Properties of Food Materials Using Saturated Salt Solution and Humidity Generating Techniques
… salt solution method and the new automated water sorption instruments with the Dynamic Vapor Sorption instrument as a representative instrument for obtaining moisture sorption isotherms, and (B) Explore additional applications of humidity generating instruments with the Dynamic Vapor …
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The deposition of silica on titanium dioxide surfaces
… microelectrophoresis and nitrogen, argon and water sorption. Nitrogen and argon adsorption isotherms have been analysed using the equation of Brunauer, Emmett and Teller (BET). Differential energies of adsorption of nitrogen and argon have been determined calorimetrically. Water sorption …
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Physicochemical and Sensory Characterisation of Interaction in Sodium-Chloride - Hydrocolloid Systems
… of $\sp{23}$Na nucleus. In addition, changes in water sorption behaviour were also observed. Interaction was present in the ionic CMC systems but not in the MC systems, as seen by NMR and water sorption behaviour. The interaction was enhanced in the freeze-dried CMC systems. Significant …
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Sorption-based atmospheric water harvesting: from atoms to applications
Thirteen thousand trillion liters of water in the atmosphere is a natural resource found anywhere on the earth, and available to anyone. Sorption-based atmospheric water harvesting (SAWH) is the extraction of water vapor using sorbent materials across a broad spectrum of relative humidity, which …
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Crystal engineering of 2-periodic Ni- and Co-based, isoreticular, mixed ligand metal-organic frameworks for sorption studies
… in many applications, for example, enhancing gas sorption capacities. MOFs consisting of mixed ligands, i.e., more than one type of ligand, open the possibility of varying pore directional features in three dimensions independently, thus allowing for further tailoring of properties. This thesis …
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Structural relaxations and crystallization in amorphous food model formulations
… and whey protein isolates (WPI) at various water activities (0 ≤ aw ≤ 0.76) at 25 °C to 45 °C. Differential scanning calorimetry (DSC), dynamic-mechanical (DMA) and dielectric (DEA) analysis, static sorption measurement (SSM) and dynamic dewpoint isotherm (DDI) analysis, and powder X-ray …
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Synthesis and characterization of "non-shrinking" nanocomposites for dental applications
… modulus, depth of cure, degree of conversion and water sorption. Results obtained were compared with various commercial dental composites (Filtek Supreme [FS], Filtek Flow [FF] and Filtek A110 [A110]). At 60 minutes post-gel polymerization, shrinkage associated with the experimental nanocomposites …
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Structure-property behavior of polyimide homopolymers, copolymers, and blends
… reductions in the dielectric constant and water sorption, and improvements in processability were obtained by incorporating relatively nonpolar reactants, such as fluorinated dianhydrides, hydrophobic aromatic diamines, and polydimethylsiloxane oligomers.
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A study investigating the mechanical testing of a novel dental restorative material and its biocompatibility
… tested using bi-axial flexure, vickers hardness, water sorption and water solubility tests, but a one-way ANOVA showed no significant difference between their mechanical properties. Cytotoxicity tests were also performed by culturing RBC specimen discs both directly and indirectly with ATCC mouse …
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Smart Surfaces in Biobased Materials
… The hysteresis was found to be both kinetic (water sorption and reorganization) and thermodynamic (surface roughness and surface coverage with F-moieties) in nature. Consecutive force loops revealed an increase in the wetting force (advancing and receding) with increasing loop number, …
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Structure and Dynamics of Layered Double Hydroxides
… and surface structure and dynamics of anions and water molecules. This thesis describes a systematic experimental investigation of the hydration, expansion, and molecular scale structure and dynamics of LDHs. It provides important, fundamental data and significant new insight into the factors that …
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Tailoring Metal–Organic Frameworks for Water Harvesting
Water sorbents enable technologies that have the potential to mediate water insecurity, meet an increasing energy demand, and push towards sustainability. Metal-organic frameworks (MOFs) are candidate sorbents for such technologies as a direct result of their inherent chemical modularity – …
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Sugar matrices in stabilization of bioactives by dehydration
… that: (i) lactose and trehalose showed similar water sorption and glass transition but very different crystallization behavior as pure sugars; (ii) the glass transition of sugar-based systems was slightly affected by the presence of other components in anhydrous systems but followed closely that …
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Síntesis, caracterización, propiedades y aplicaciones de nuevas poliamidas aromáticas con subestructuras benzoéter corona y benzopodandos en la cadena lateral
… mechanical and thermal behaviour, water sorption, morphology, diffusion data, and permeability of membranes prepared with these polymers. The interaction of alkaline, alkaline earth, transition metal, heavy metal, and lanthanide cations from nitrate solutions with synthetic …
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Performance Assessment and Evaluation of Hydrophobic and Ultraviolet Protective Treatments for Historic Log Structures
… to problems delineated from contact with water, the physical fabric of wood is damaged by UV light through degradation of lignin. Exposed wooden members are often affected by this damage in a matter of days. The small depth of penetration restricts damage to surface area. However, when …
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The Effects of Structure, Humidity and Aging on the Mechanical Properties of Polymeric Ionomers for Fuel Cell Applications
… and thermal gravimetric analysis and their water uptake and sorption and desorption isotherms were measured. A mastercurve and a shift factor plot were constructed for 60% sulfonated Dais® membrane. It was determined that an increase in the degree of sulfonation raised the glass transition …
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