Open Access. Powered by Scholars. Published by Universities.®
Polymer and Organic Materials Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Biofouling (1)
- Biomimetic membranes (1)
- Carbon nanotubes (1)
- Catalysis (1)
- Cellulose acetate (1)
-
- Dechlorination (1)
- Gas separation (1)
- Hollow fiber membranes (1)
- Hydrogel (1)
- Leaching (1)
- Membranes (1)
- Mixed matrix membranes (1)
- Nanomaterials (1)
- Palladium (1)
- Polyethersulfone (1)
- Pseudomonas fluorescens migula (1)
- Reactive nanocomposite membranes (1)
- Selective separation (1)
- Separations (1)
- Silver nanoparticle (1)
- Thin films (1)
- Ultrafiltration (1)
Articles 1 - 4 of 4
Full-Text Articles in Polymer and Organic Materials
Nanostructured Metal Thin Films As Components Of Composite Membranes For Separations And Catalysis, Michael J. Detisch
Nanostructured Metal Thin Films As Components Of Composite Membranes For Separations And Catalysis, Michael J. Detisch
Theses and Dissertations--Chemical and Materials Engineering
Novel metallic thin film composite membranes are synthesized and evaluated in this work for improved separations and catalysis capabilities. Advances in technology that allow for improved membrane performance in solvent separations are desirable for low molecular weight organic separation applications such as those in pharmaceutical industries. Additionally, the introduction of catalytic materials into membrane systems allow for optimization of complex processes in a single step. By adding a nanostructured metallic thin film to its surface, a polymer membrane may be modified to exhibit these improved properties. Using magnetron sputtering, thin metal films may be deposited on commercially available membranes to …
Mixed Matrix Flat Sheet And Hollow Fiber Membranes For Gas Separation Applications, Nicholas W. Linck
Mixed Matrix Flat Sheet And Hollow Fiber Membranes For Gas Separation Applications, Nicholas W. Linck
Theses and Dissertations--Chemical and Materials Engineering
Mixed matrix membranes (MMM) offer one potential path toward exceeding the Robeson upper bound of selectivity versus permeability for gas separation performance while maintaining the benefits of solution processing. Many inorganic materials, such as zeolites, metal-organic frameworks, or carbon nanotubes, can function as molecular sieves, but as stand-alone membranes are brittle and difficult to manufacture. Incorporating them into a more robust polymeric membrane matrix has the potential to mitigate this issue.
In this work, phase inversion polymer solution processing for the fabrication and testing of asymmetric flat sheet mixed matrix membranes was employed with CVD-derived multiwall carbon nanotubes (MWCNTs) dispersed …
Functionalization Of Silver Nanoparticles On Membranes And Its Influence On Biofouling, Conor G. Sprick
Functionalization Of Silver Nanoparticles On Membranes And Its Influence On Biofouling, Conor G. Sprick
Theses and Dissertations--Chemical and Materials Engineering
Ultrafiltration (UF) processes are often used as pretreatment before more retentive/costly processes, such as nanofiltration and reverse osmosis. This study shows the results of low-biofouling nanocomposite membranes, loaded with casein-coated silver nanoparticles (casein-Ag-NPs). Membranes were cast and imbedded with Ag-NPs using two approaches, physical blending of Ag-NPs in the dope solution (PAg-NP/CA membranes) and chemical attachment of Ag-NPs to cast membranes (CAg-NP/CA membranes), to determine their biofouling control properties. The functionalization of Ag-NPs onto the CA membranes was achieved via attachment with functionalized thiol groups with the use of glycidyl methacrylate (GMA) and cysteamine chemistries. The …
Tunable Nanocomposite Membranes For Water Remediation And Separations, Sebastián Hernández Sierra
Tunable Nanocomposite Membranes For Water Remediation And Separations, Sebastián Hernández Sierra
Theses and Dissertations--Chemical and Materials Engineering
Nano-structured material fabrication using functionalized membranes with polyelectrolytes is a promising research field for water pollution, catalytic and mining applications. These responsive polymers react to external stimuli like temperature, pH, radiation, ionic strength or chemical composition. Such nanomaterials provide novel hybrid properties and can also be self-supported in addition to the membranes.
Polyelectrolytes (as hydrogels) have pH responsiveness. The hydrogel moieties gain or lose protons based on the pH, displaying swelling properties. These responsive materials can be exploited to synthesize metal nanoparticles in situ using their functional groups, or to immobilize other polyelectrolytes and biomolecules. Due to their properties, these …