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Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications

Membranes are finding wide applications in various fields spanning biological, water, and energy areas. Synthesis of membranes to provide tunable flux, metal sorption, and catalysis has been done through pore functionalization of microfiltration (MF) type membranes with responsive behavior. This met...

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Autores principales: Davenport, Douglas M., Gui, Minghui, Ormsbee, Lindell R., Bhattacharyya, Dibakar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432535/
https://www.ncbi.nlm.nih.gov/pubmed/30979126
http://dx.doi.org/10.3390/polym8020032
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author Davenport, Douglas M.
Gui, Minghui
Ormsbee, Lindell R.
Bhattacharyya, Dibakar
author_facet Davenport, Douglas M.
Gui, Minghui
Ormsbee, Lindell R.
Bhattacharyya, Dibakar
author_sort Davenport, Douglas M.
collection PubMed
description Membranes are finding wide applications in various fields spanning biological, water, and energy areas. Synthesis of membranes to provide tunable flux, metal sorption, and catalysis has been done through pore functionalization of microfiltration (MF) type membranes with responsive behavior. This methodology provides an opportunity to improve synthetic membrane performance via polymer fabrication and surface modification. By optimizing the polymer coagulation conditions in phase inversion fabrication, spongy polyvinylidene fluoride (PVDF) membranes with high porosity and large internal pore volume were created in lab and full scale. This robust membrane shows a promising mechanical strength as well as high capacity for loading of adsorptive and catalytic materials. By applying surface modification techniques, synthetic membranes with different functionality (carboxyl, amine, and nanoparticle-based) were obtained. These functionalities provide an opportunity to fine-tune the membrane surface properties such as charge and reactivity. The incorporation of stimuli-responsive acrylic polymers (polyacrylic acid or sodium polyacrylate) in membrane pores also results in tunable pore size and ion-exchange capacity. This provides the added benefits of adjustable membrane permeability and metal capture efficiency. The equilibrium and dynamic binding capacity of these functionalized spongy membranes were studied via calcium ion-exchange. Iron/palladium catalytic nanoparticles were immobilized in the polymer matrix in order to perform the challenging degradation of the environmental pollutant trichloroethylene (TCE).
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spelling pubmed-64325352019-04-02 Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications Davenport, Douglas M. Gui, Minghui Ormsbee, Lindell R. Bhattacharyya, Dibakar Polymers (Basel) Article Membranes are finding wide applications in various fields spanning biological, water, and energy areas. Synthesis of membranes to provide tunable flux, metal sorption, and catalysis has been done through pore functionalization of microfiltration (MF) type membranes with responsive behavior. This methodology provides an opportunity to improve synthetic membrane performance via polymer fabrication and surface modification. By optimizing the polymer coagulation conditions in phase inversion fabrication, spongy polyvinylidene fluoride (PVDF) membranes with high porosity and large internal pore volume were created in lab and full scale. This robust membrane shows a promising mechanical strength as well as high capacity for loading of adsorptive and catalytic materials. By applying surface modification techniques, synthetic membranes with different functionality (carboxyl, amine, and nanoparticle-based) were obtained. These functionalities provide an opportunity to fine-tune the membrane surface properties such as charge and reactivity. The incorporation of stimuli-responsive acrylic polymers (polyacrylic acid or sodium polyacrylate) in membrane pores also results in tunable pore size and ion-exchange capacity. This provides the added benefits of adjustable membrane permeability and metal capture efficiency. The equilibrium and dynamic binding capacity of these functionalized spongy membranes were studied via calcium ion-exchange. Iron/palladium catalytic nanoparticles were immobilized in the polymer matrix in order to perform the challenging degradation of the environmental pollutant trichloroethylene (TCE). MDPI 2016-01-27 /pmc/articles/PMC6432535/ /pubmed/30979126 http://dx.doi.org/10.3390/polym8020032 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Davenport, Douglas M.
Gui, Minghui
Ormsbee, Lindell R.
Bhattacharyya, Dibakar
Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title_full Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title_fullStr Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title_full_unstemmed Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title_short Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
title_sort development of pvdf membrane nanocomposites via various functionalization approaches for environmental applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432535/
https://www.ncbi.nlm.nih.gov/pubmed/30979126
http://dx.doi.org/10.3390/polym8020032
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