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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 41 for “"QCM-D"”.
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Adsorption/Desorption Process of Stimuli-Responsive Polymers on Simulated Natural Surfaces Using QCM-D & AFM Analysis
… microbalance with dissipation monitoring (QCM-D) was employed to investigate the interactions of the polymer dispersants on model natural surfaces. AFM was used to investigate the morphology of films after deposition on the model surfaces. Mechanisms and kinetics of the adsorption and …
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Renewable Natural Polymer Thin Films and Their Interactions with Biomacromolecules
… microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR) and atomic force microscopy (AFM). Chitinase activity on regenerated chitin (RChitin) films was studied by QCM-D and AFM. The optimal temperature and pH for chitinase activity on surfaces determined by QCM-D …
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Studies of Biomacromolecule Adsorption and Activity at Solid Surfaces by Surface Plasmon Resonance and Quartz Crystal Microbalance with Dissipation Monitoring
… microbalance with dissipation monitoring (QCM-D). Carboxymethyl cellulose (CMC) adsorption onto cellulose surfaces from aqueous solutions was enhanced by electrolytes, especially by divalent cations. A combination of SPR and QCM-D results showed that CMC formed highly hydrated layers on …
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Quartz Crystal Microbalance with Dissipation Monitoring Applications in Polymer Thin Films Analysis
… microbalance with dissipation monitoring (QCM-D). The assembly and interactions of glucan and chitin are crucial for understanding the fungal infection mechanism. Adsorption of mixed-linkage glucan (MLG) onto regenerated chitin (RChitin) and cellulose (RC) surfaces were investigated by …
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Arabinoglucuronoxylan and Arabinoxylan Adsorption onto Regenerated Cellulose Films
… microbalances with dissipation monitoring (QCM-D), surface plasmon resonance (SPR) and atomic force microscopy (AFM) are widely used to investigate polymer adsorption/desorption at liquid/solid interfaces. In this study, smooth trimethylsilyl cellulose (TMSC) films were spincoated onto gold …
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Observing the Sedimentation of TiO2 Nanoparticles in Aqueous Solution Using a Quartz Crystal Microbalance with Dissipation Monitoring
… microbalance with dissipation monitoring (QCM-D) is explored. Using a vector network analyzer (VNA) to measure harmonic ranges from the primary to the 89th harmonic of a 5 MHz crystal. The fast read and processing ability of the VNA let us monitor the change in frequency, full width at half …
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Studies of Macromolecule/Molecule Adsorption and Activity at Interfaces
… microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR) and atomic force microscopy (AFM), in order to gain better understanding on biofuel conversion, gene/drug delivery, and chemical fixation of CO2. Biomimetic chelator-mediated Fenton (CMF) non-enzymatic …
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Characterization of Cellulose and Chitin Thin Films and Their Interactions with Bio-based Polymers
… microbalance with dissipation monitoring (QCM-D) and surface plasmon resonance (SPR). Because of the difficulty of extracting native cellulose, regenerated cellulose (RC), sulfated nanocrystalline cellulose (SNC), and desulfated nanocrystalline cellulose (DNC) thin films are often studied …
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Interactions of Chitin and Lignin Thin Films with Other Molecules
… microbalance with dissipation monitoring (QCM-D) and atomic force microscopy (AFM). Interactions between chitin and family 18 chitinases are vital for understanding bacterial invasion of fungi and human defense against fungal infection. Regenerated chitin (RChitin) thin films were prepared …
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Hydrogen-bonded layer-by-layer assembly of poly(vinyl alcohol) and tannic acid
… behavior of these films was investigated using QCM-D. The QCM-D results showed that each polymer immersion step involves both the deposition and removal of mass to and from the system, with the degree of removal determining the extent to which film assembly is successful. The pH stability of the …
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Adsorption of Xyloglucan onto Cellulose and Cellulase onto Self-assembled Monolayers
… microbalance with dissipation monitoring (QCM-D), and atomic force microscopy (AFM) measurements. These studies were compared to adsorption studies of XG onto thin sulfated nanocrystalline cellulose (SNC) films and regenerated cellulose (RC) films performed by others. Collectively, these …
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Investigations into Message Passing Neural Networks and Polymer Fouling
… with Quartz Crystal Microbalances (QCMs). Message Passing Neural Networks are promising deep learning architectures for chemical property prediction. The state-of-the-art MPNN known as Chemprop is adapted in this thesis for the prediction of infrared spectra. A novel loss function …
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Adsorption of Biomacromolecules onto Polysaccharide Surfaces
… microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR) and atomic force microscopy (AFM). Xyloglucan adsorption isotherms were obtained to probe how cellulose-hemicellulose interactions were affected by the type of cellulose substrate and molar mass of xyloglucan. …
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Organic Self-Assembled Films for Nonlinear Optics: Film Structure, Composition and Kinetics of Film Formation
… a quartz crystal microbalance with dissipation (QCM-D) monitoring, ellipsometry, absorbance, and second harmonic generation (SHG) measurements. PCBS has an azo-benzene chromophore side group that, when sufficiently oriented, results in measurable SHG. Films of PAH/PCBS fabricated at neutral pH …
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Towards an understanding of peptide-inorganic interactions
… microbalance with dissipation monitoring (QCM-D) and isothermal titration calorimetry (ITC).
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Adsorption of Blood Proteins onto Polysaccharide Surfaces
… microbalance with dissipation monitoring (QCM-D) were combined to investigate the adsorption behavior of two platelet adhesion-related blood proteins, human serum albumin (HSA) and human serum fibrinogen (HSF), on two polysaccharide materials used for hemodialysis membrane applications: …
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Studies of Sustainable Polymers: Novel Lignins to Reprocessable Polymers
… a quartz crystal microbalance with dissipation (QCM-D). Atomic force microscopy (AFM) was applied to investigate the topologies of the copolymer and degraded films. Horseradish peroxidase (HRP) was used as the enzyme for the dehydrogenative polymerization of monolignols and chelator-mediated …
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Bio-inspired Cellulose Nanocomposites
… microbalance with dissipation monitoring (QCM-D). Complete coverage of the cationic surface with alkali lignin occured at low solution concentration; large affinity coefficients were calculated for this system at differing pH levels. Adsorption studies with organosolv lignin in an organic …
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Adsorption Studies of Polysaccharides and Phospholipids Onto Cellulose
… microbalance with dissipation monitoring (QCM-D) and in situ atomic force microscopy (AFM) measurements. This dissertation shows the porous character of nanocrystalline cellulose films as the key feature for enhanced adsorption of chemically modified polysaccharides and provides …
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Host-Guest Assemblies for Functional Interfaces via Langmuir-Blodgett and Self-Assembly Technique
… Quartz crystal microbalance with dissipation (QCM-D) measurements was used to demonstrate the capacity of LDSAMs to confine guest molecules in the cavities and to probe the structural changes of the host-guest assembly during guest intercalation from ethanol solution. X-ray photoelectron …
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