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 20 of 964 for “"Hydrophilic"”.
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Surface Properties of Hydrophilic Polymers
Polymers based entirely or substantially on hydrophilic monomers have achieved importance in recent years largely because of their ability to absorb water and form (in the case of cross linked polymer) soft, elastic gels (‘hydrogels'). The surface properties of this group of materials are important …
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Dropwise condensation on hydrophilic surfaces
… stable dropwise condensation on a smooth, solid, hydrophilic surface (𝜃a = 38°) having low contact angle hysteresis (< 3°). We show that the distribution of droplet sizes for coalescing droplets agrees well with the classical distribution on hydrophobic surfaces. Our findings demonstrate that …
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Advancement of the Hydrophobic-Hydrophilic Separation Process
… Tech have developed a process called hydrophobic-hydrophilic separation (HHS), which is based originally on a concept known as dewatering by displacement (DbD). The process uses non-polar solvents (usually short-chain alkanes) to selectively displace water from particle surfaces and to agglomerate …
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Self-assembly behavior in hydrophilic block copolymers
… in water of A b B type block copolymers (with A hydrophilic) of the variation of the hydrophilicity of B from non-soluble (hydrophobic) to totally soluble (hydrophilic). Glucose-modified polybutadiene-block-poly(N-isopropylacrylamide) copolymers were prepared and their self-assembly behavior in …
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Complexation Between DNA and Hydrophilic-Cationic Diblock Copolymers
… cost. Among the many polycation architectures, hydrophilic-cationic diblock copolymers are particularly promising due to their versatility. Compared to the emphasis on biological evaluation of polyplexes, however, in-depth understanding of the polyplex formation process (and the parameters …
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Transition metal ion coordination in hydrophilic polymer membranes
… of transition metal ion complexation within hydrophilic copolymer membranes. The membranes are copolymers of 4-methyl-4'-vinyl-2,2'-bipyridine, the 2-hydroxyethyl ester of 4,4'- dicarboxy-2,2'-bipyridine & bis-(5-vinylsalicylidene)ethylenediamine with 2-hydroxyethyl methacrylate. The effect …
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Effect of hydrophilic gels on seed germination and plant establishment
Call number: LD2668 .T4 1984 H46
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Effect of hydrophilic gels on seed germination and plant establishment
Call number: LD2668 .T4 1984 H46
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Modification of natural hydrophilic polymers for use in pharmaceutical formulations
The introductory chapter of this doctoral thesis provides an overview of the salient properties of pharmaceutical excipients, chitin, metal silicates and sugar alcohols in order to give a scientific background/context to the research subject matter reported in subsequent chapter of the thesis. When …
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Orientational fluctuations of liquid water at hydrophobic and hydrophilic interfaces
… bonding structure using a disordered model hydrophilic surface with tunable polarity. We investigate the relationship between the surface polarity and interfacial molecular structure using the characterization method previously introduced. Based on a mean-field model of interfacial hydrogen …
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Hydrophobic-Hydrophilic Separation Process for the Recovery of Ultrafine Particles
… A novel technology called the Hydrophobic-Hydrophilic Separation (HHS) process, developed at Virginia Tech, has been successfully applied to recover fine coal in previous research. The results of research into the HHS process showed that the process has no lower particle size limit, similar …
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Fabrication and Study of Switchable Polymer Layers with Hydrophobic/Hydrophilic Behavior
… controlled environment from ultra-hydrophobic to hydrophilic energetic states. The PFS/PVP mixed brush was grafted onto the pre-treated PTFE surface (plasma etching) with the needle like topography. The size of vertical needles was at micron scale. If the brush is switched to the hydrophobic state …
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Adsorption of molecular layers on hydrophilic SiOxNy probed by DPI technique
… deposited from their vapour phase onto a hydrophilic silicon oxynitride surface. Although slightly less accurate, the results are in good agreement with the previous study in terms of average orientation angle and thickness of the monolayer deposited (56.5° and 1.44 nm respectively). We …
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The Synthesis, Characterization, and Properties of Stiff, Hydrophilic, Dendritic, Phenylacetylene Macromolecules
… containing a large lipophilic domains and hydrophilic domains of varying size were prepared. Aggregation of these macromolecular amphililes in lipophilic solvents was studied.
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Synthesis and development of hydrophilic iron oxide nanoparticles for biomedical applications
… were designed and synthesized, and the resulting hydrophilic SPIONs in biological buffers were found to be compact, stable, highly magnetic, and biocompatible. Furthermore, the hydrophilic SPIONs were stable in vitro in serums and cells as well as in vivo in mice. Functionalized SPIONs …
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Creating stable hydrophilic surfaces with blends of branched and linear polymers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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Development of Sodium Benzoate Tablets with Dual Burst Release: Hydrophilic Matrix System
… To achieve dual burst release, tablets with hydrophilic matrix system were developed. These tablets consist of a hydrophilic matrix system that incorporates the API. The hydrophilic polymers swell up and function as a barrier and control the release of the API. A total of 27 formulations …
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