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 10 of 10 for “"Oppositely-charged polymers"”.
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Electrostatic Self-Assembly of Biocompatible Thin Films
… alternating adsorption of molecular layers of oppositely charged polymers/nanoparticles, and can be applied in the fabrication of well-organized multilayer thin films possessing various biocompatible properties. ESA multilayer assemblies incorporating various biomaterials including metal oxides …
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Polyelectrolyte multilayers as nanostructured templates for inorganic synthesis
… by the layer-by-layer electrostatic assembly of oppositely charged polymers are a versatile new form of thin film in which the physical and chemical architecture can be precisely controlled over the nanoscale. This thesis addresses the elucidation, development, and application of polyelectrolyte …
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Polyelectrolyte multilayers : nanofabricated architectures for bio-interface materials
… process, whereby aqueous solutions of oppositely charged polymers are alternately and repeatedly deposited onto a substrate, has emerged in recent years as a promising approach for creating thin films with nanoscale control of structure, composition, and surface properties. Applications …
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Study of the effect of mechanical stiffness substrata, assembled with polyelectrolyte multilayer thin films, on biofilm forming staphylococcus epidermidis' initial adhesion mechanism
… through a layer-by-layer sequential addition of oppositely charged polymers. The layer-by-layer film assembly technique allows for properties such as film thickness, chemical functionality, and elastic moduli to be easily altered by changing the pH in solution, or the number of bilayers added. …
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Nonlinear Optical Properties and Structural Characteristics of Ionically Self-Assembled Nanoscale Polymer Films Influenced by Ionic Concentration and Incorporation of Monomer Chromophores
… (ISAM) films are typically an assemblage of oppositely charged polymers built layer by layer through coulombic attraction utilizing an environmentally friendly process to form ordered structures that are uniform, molecularly smooth, and physically robust. ISAM films have been shown to be …
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Second-Order Nonlinear Optical Characteristics of Nanoscale Self-Assembled Multilayer Organic Films
… (ISAM) films are typically an assemblage of oppositely charged polymers built layer by layer through Coulombic attraction utilizing an environmentally friendly process to form ordered structures that are uniform, molecularly smooth and physically robust. ISAM films have been shown to be …
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Characterization and patterned polymer films from a novel self-assembly process
… The ionic attractions developed between the oppositely charged polymers promote strong interlayer adhesion and a uniform and linear multilayer deposition process. UV/Vis absorbance, contact angle, and ellipsometry measurements revealed that in all cases the bilayer deposition process was …
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Controlling the Bio-Nano Interface via Engineered Layer-by-Layer Nanoparticles for Treatment of Biofilm-Based Infections
… (LbL) platform technology, in which oppositely charged polymers are sequentially adsorbed onto charged colloidal NP templates, offers a unique fabrication method to assemble modular, uniform panels of distinct NPs surface chemistries. This thesis investigates three distinct NP …
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Halloysite for smart nano-structured materials in sustainable applications
… i.e. nanoclays, with organic moieties such as biopolymers. Among clays, Halloysite Nanotubes (HNTs) were deeply investigated due to their peculiar properties: morphology, different chemistry and charges on the internal and external surfaces, high aspect ratio, no toxicity, eco-friendliness and low …
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Production and Characterisation of Self-Crosslinked Chitosan-Carrageenan Polyelectrolyte Complexes
… associated with long-term toxicity in the body. Oppositely-charged polyelectrolytes (PEs) have the advantage that they can self-crosslink electrostatically and those derived from marine organisms are an inexpensive alternative to glycosaminoglycans present in the extracellular matrix of human …