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Electrospun And Nanofibrous Membranes

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Development of Low Pressure Filter Testing Vessel and Analysis of Electrospun Nanofiber Membranes for Water Treatment

Development of Low Pressure Filter Testing Vessel and Analysis of Electrospun Nanofiber Membranes for Water Treatment Book
Author : Kyle Nilsen
Publisher : Unknown
Release : 2011
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Polymeric electrospun nanofibrous membranes were investigated for use in water filtration applications. A customized pressure vessel was designed according to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) to be used to test the membrane for its filtration properties. Low pressure filtration was focused on due to previous research that suggested that high pressure water testing of electrospun polymeric nanofibrous filters could decrease the filtration capability by expanding the pore size within the membrane. During testing it was found that this technology does reduce pathogens but will only remove a portion of them per pass, and thus is not adequate for use as a one pass pathogenic filter. The filter was found to be well suited for the reduction in the amount of suspended and dissolved solids, increasing clarity, and reduction of odor. A scanning electron microscope (SEM) was used to study the electrospun fibrous pads to narrow down on an ideal parameter set that gave the desirable characteristics for the application of filtration. The composition of the polymer, and electrospinning parameters, were also manipulated to give a hydrophilic, or absorbent, membrane to facilitate a low pressure differential for filtration. It was demonstrated that this type of filtration membrane can be manufactured inexpensively while not requiring electricity or other external power source to generate large pressure differentials and flow. This is desirable because it allows this technology to be used in areas where both basic utilities and clean water are limited, for example in remote Africa and India. It was also shown that this filter has benefits over best selling commercial water filters currently on the market. This technology may be best suited for enhancement of tap water where healthier and cleaner water is desired. Pre-filtration of reverses osmosis (RO) or other ultrafine filter system, to increase the life of the primary filter while decreasing fouling and maintenance may be another application.

Electrospun and Nanofibrous Membranes

Electrospun and Nanofibrous Membranes Book
Author : Ali Kargari,Takeshi Matsuura,Mohammad Mahdi A. Shirazi
Publisher : Elsevier
Release : 2021-10-15
ISBN : 9780128230329
Language : En, Es, Fr & De

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Book Description :

Electrospun and Nanofibrous Membranes: Principles and Applications covers the fundamental basic science and many engineering aspects of electrospun membrane technology and nanofibers, membrane design and membrane processes. The book comprehensively reviews a wide range of applications of electrospun membranes including pressure-driven processes, MD process, batteries, oil-water separation, air filtration, drug delivery, fuel-cells and ion-exchange membranes, as well as antimicrobial membranes. The book is written for chemical, polymer, and materials engineers, professors and students at university working on membrane-based separation technology and electrospun nanofibers, as well as R&D engineers in industry working in the field of membrane technology and nanofibers for a wide range of applications including water and wastewater treatment, desalination, drug delivery and tissue engineering, new generation of batteries, fuel cells, air filtration, etc. Further the book can be used a reference in graduate courses for master and PhD students of chemical, materials, medical and polymer engineering, either as an individual course or as a core for advanced courses. Introduces comprehensively the principles of electrospinning and electrospun membranes Reviews critically the different configurations of electrospinning Discusses scale-up strategies for nanofiber production

Functional Electrospun Nanofibrous Membranes for Water Filtration

Functional Electrospun Nanofibrous Membranes for Water Filtration Book
Author : Seyed Shahin Homaeigohar
Publisher : Unknown
Release : 2011
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Functional Electrospun Nanofibrous Membranes for Water Filtration book written by Seyed Shahin Homaeigohar, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Electrospun Nanofibrous Membranes

Electrospun Nanofibrous Membranes Book
Author : Alessandra Arecchi
Publisher : Unknown
Release : 2009
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Electrospun Nanofibrous Membranes book written by Alessandra Arecchi, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanofiber Membranes for Medical Environmental and Energy Applications

Nanofiber Membranes for Medical  Environmental  and Energy Applications Book
Author : Ahmad Fauzi Ismail,Nidal Hilal,Juhana Jaafar,Chris Wright
Publisher : CRC Press
Release : 2019-07-30
ISBN : 1351174029
Language : En, Es, Fr & De

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Book Description :

This book focuses on the nanofiber membrane’s fabrication, characterization, and performance for medical, environment and energy applications. Topics include polymer, inorganic and composite-form nanofiber membrane materials. Top Research teams from varied disciplines and continents outline applied nanofiber membrane fabrication techniques and characterizations. Promising nanofiber membranes for improving and enhancing technologies used in drug delivery, wound healing, tissue engineering, water and wastewater treatment and purification, gas separation and purification, air purification, and fuel cells are discussed along with the likely path forward for commercial usage. Key Features: Shares the most recent discovery solutions from experts all over the globe for the numerous problems in medical, environmental and energy applications. Provides a holistic cycle of nanofiber membrane development which comprehensively discusses the membrane preparation, characterizations, performance and the way forward for a specific process and application. Explains the mechanism of separation and purification. Focuses on the nanofiber membrane’s fabrication, characterizations, and performance in various scenarios and commercial applications.

Applications of Electrospun Nanofiber Membranes for Bioseparations

Applications of Electrospun Nanofiber Membranes for Bioseparations Book
Author : Todd J. Menkhaus,Lifeng Zhang,Hao Fong
Publisher : Nova Science Pub Incorporated
Release : 2010
ISBN : 9781608767823
Language : En, Es, Fr & De

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Book Description :

In this book the bio-separation applications of nanofibre membranes are discussed, including fabrication techniques and properties for the electrospun nanofibres, chemical modification of the membrane fibres, and purification of biological products by size-based and adsorptive mechanisms. Limitations and future possibilities of nanofibre membranes for bio-separations, as well as comparisons to conventional membrane bio-separations, are made.

Electrospun Micro and Nanofibrous Membrane for Tissue Engineering

Electrospun Micro and Nanofibrous Membrane for Tissue Engineering Book
Author : Sultana Naznin,Foong Choi Yee,Mazle Hanie Azzira
Publisher : LAP Lambert Academic Publishing
Release : 2015-07-27
ISBN : 9783659764004
Language : En, Es, Fr & De

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Book Description :

Recently, in the field of tissue engineering, fabrication of three dimensional (3D) electrospun membrane is much emphasized. 3D scaffold fabricated from multi-layered electrospun membrane possess both the benefits of nanofibrous and microfibrous scale morphology in one scaffold. In this book, layered composite scaffolds or membranes were fabricated using blend of Polycaprolactone (PCL) /Chitosan and PCL layer-by-layer using multilayer electrospinning techniique. Characterization of membranes were conducted using several techniques. Using optimized solution concentration and processing parameters, the composite PCL/Chitosan and PCL layer-by-layer membrane were successfully fabricated. From the scanning electron micrographs, it was observed that the composite electrospun membranes produced microfibers and nanofibers morphology within single scaffold. In another part of this book, PCL was blended with Chitosan using a common solvent formic acid and acetic acid. The ratio of concentration of the polymers was varied in order to form different level of viscosity of polymeric solutions. Then the PCL/Chitosan nanofibers were fabricated via electrospinning technique.

Properties Evaluation of Electrospun Alginate based Nanofibrous Membranes for Filtration Applications

Properties Evaluation of Electrospun Alginate based Nanofibrous Membranes for Filtration Applications Book
Author : Teboho Clement Mokhena
Publisher : Unknown
Release : 2016
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Properties Evaluation of Electrospun Alginate based Nanofibrous Membranes for Filtration Applications book written by Teboho Clement Mokhena, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Electrospun Nylon 6 Nanofiber Membranes for Capturing Exhaled Breath Aerosols Containing Submicron and Nano Size Particles

Electrospun Nylon 6 Nanofiber Membranes for Capturing Exhaled Breath Aerosols Containing Submicron and Nano  Size Particles Book
Author : Catherine Ging Reyes
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

In this thesis, electrospun nanofibrous membranes for capturing submicron particles from simulated exhaled breath are investigated. Although it is known that aerosols of Influenza are responsible for increased rates of infection, studies have yet to succeed in quantifying sub-micron Influenza particles present in contagious exhaled breath. Therefore, here we observe the extent to which airborne sub-micron particles, modelling the size, and surface charge of exhaled viral particles, can be captured by electrospun Nylon-6 nanofiber media. An aerosol of salt particles was generated from an aqueous sodium chloride solution. This solution modeled an exhaled Influenza type aerosol because the majority of droplet sizes ranged from 0.52[MICRO SIGN]m to 4.0[MICRO SIGN]m; the typical size range of aqueous droplets in exhaled saliva. A large animal respirator simulated the process of human breathing. During exhalation, the respirator dispersed the salt aerosol to nanofiber membranes for capture. The Nylon-6 membranes used in this study were uniformly electrospun on a large scale [15cm by 96cm] with targeted fiber diameters ranging from 100 nm to 200 nm. FESEM (Field Emission Scanning Electron Microscopy) and EDX (Energy Dispersive X-Ray Spectroscopy) were used to show that these membranes captured salt particles ranging from 30nm - 200nm (the viral particle size range reported most difficult to isolate). Nylon-6 nanofiber membranes could overall capture up to 39% higher salt aerosol concentrations than the control membranes, and did not break during the test process. BET (BrunauerEmmett-Teller) and porometry analysis of the electrospun membranes show that small pore sizes (104nm - 122nm) and high surface areas (44m2/g - 58m2/g) contribute to better aerosol capture than for the control membranes. Furthermore, a cascade impactor was employed to quantify the changes in salt capture before and after the nanofiber filter membrane was using in the breathing apparatus. Compared to the control membranes, the highest percent of smallest sized aerosol droplets, between 0.52 m - 1.55 m, can be captured by all types of electrospun membranes. Additionally, to increase hydrophilicity of the Nylon-6 membranes, poly(acrylic acid) was grafted to the Nylon-6 membrane by two methods. In the first method, poly(acrylic acid) was grafted onto the chain-end surfaces of the Nylon-6 electrospun membrane using the amine-to-carboxylic acid coupling agent: EDC (1-ethyl-3-(3dimethylaminopropyl)carbodiimide hydrochloride). For the second method, the electrospun membranes were mutually gamma irradiated in an acrylic acid monomer solution to initiate free radical polymerization grafting. The second method resulted in high add-on of acrylic acid in the form of monodisperse beads on the surface. Found via FTIR (Fourier Transform Infrared) analysis, there is 17% - 20% chance of grafting occurring, with up to a 9% overall weight increase in the membranes. The crystalline structure of the Nylon-6 is also significantly modified in the process, with higher Hm values. Overall surface area, porosity, and mechanical properties of the membranes decreased, and the salt particle capture did not improve, however. The end use goal for the plain and surface modified nanofiber membranes is that they can serve as effective wearable textile materials to supplement the capture, and characterization, of aerosol-driven nanoscale infectious particles exhaled from human breath.

Filtering Media by Electrospinning

Filtering Media by Electrospinning Book
Author : Maria Letizia Focarete,Chiara Gualandi,Seeram Ramakrishna
Publisher : Springer
Release : 2018-05-21
ISBN : 3319781634
Language : En, Es, Fr & De

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Book Description :

This book covers the state-of-the-art on electrospun materials for the use of filters for water remediation, ion-exchange membranes and affinity membranes for the capture of selected chemical and biochemical species, as well as filtering applications covering air treatment, defense and protective applications, and oil-water separation. The book also provides an overview of the landscape of marketed electrospun filters and of technical approaches for the large scale production of nanofibrous non-woven filter media. This is an ideal book for biomaterials and polymer researchers interested in the applications of filtering media by electrospinning. This book also: Covers the latest research on ion-exchange membranes and affinity membranes for capture of cells and biological substances Broadens reader understanding of antimicrobial electrospun filters and sieving filters for liquid microfiltration Reviews exhaustively the key recent research into electrospun filters for oil-water separation, heavy metals removal, and defense and protective applications

Electrospun Non woven Nanofibrous Membranes Prepared from Nano diamond and Multi walled Carbon Nanotube filled Poly azo pyridine and Epoxy Composites Reinforced with These Membranes

Electrospun  Non woven  Nanofibrous Membranes Prepared from Nano diamond and Multi walled Carbon Nanotube filled Poly azo pyridine  and Epoxy Composites Reinforced with These Membranes Book
Author : Anonim
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Electrospun Non woven Nanofibrous Membranes Prepared from Nano diamond and Multi walled Carbon Nanotube filled Poly azo pyridine and Epoxy Composites Reinforced with These Membranes book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Electrospinning Nanofabrication and Applications

Electrospinning  Nanofabrication and Applications Book
Author : Bin Ding,Xianfeng Wang,Jianyong Yu
Publisher : William Andrew
Release : 2018-11-12
ISBN : 0128134410
Language : En, Es, Fr & De

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Book Description :

Electrospinning: Nanofabrication and Applications presents an overview of the electrospinning technique, nanofabrication strategies and potential applications. The book begins with an introduction to the fundamentals of electrospinning, discussing fundamental principles of the electrospinning process, controlling parameters, materials and structures. Nanofabrication strategies, including coaxial electrospinning, multi-needle electrospinning, needleless electrospinning, electro-netting, near-field electrospinning, and three-dimensional macrostructure assembling are also covered. Final sections explore the applications of electrospun nanofibers in different fields and future prospects. This is a valuable reference for engineers and materials scientist working with fibrous materials and textiles, as well as researchers in the areas of nanotechnology, electrospinning, nanofibers and textiles. Explores controllable fabrication of electrospun nanomaterials and their multifunctional applications Explains the electrospinning technique as used in nanofabrication and nanofibers Outlines the applications of electrospun nanofibrous materials in tissue engineering, filtration, oil-water separation, water treatment, food technology, supercapacitors, sensors and so on

An Introduction to Electrospinning and Nanofibers

An Introduction to Electrospinning and Nanofibers Book
Author : Seeram Ramakrishna
Publisher : World Scientific
Release : 2005
ISBN : 9812567615
Language : En, Es, Fr & De

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Book Description :

The research and development of nanofibers has gained much prominence in recent years due to the heightened awareness of its potential applications in the medical, engineering and defense fields. Among the most successful methods for producing nanofibers is the electrospinning process. In this timely book, the areas of electrospinning and nanofibers are covered for the first time in a single volume. The book can be broadly divided into two parts: the first comprises descriptions of the electrospinning process and modeling to obtain nanofibers while the second describes the characteristics and applications of nanofibers. The material is aimed at both newcomers and experienced researchers in the area.

Needleless Electrospinning of Nanofibers

Needleless Electrospinning of Nanofibers Book
Author : Xungai Wang,Tong Lin
Publisher : CRC Press
Release : 2013-11-14
ISBN : 9814316350
Language : En, Es, Fr & De

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Book Description :

The book covers the basic electrospinning theory, electrospinning technologies that have potential for large scale production of nanofibers, and the functional applications of electrospun nanofibers in different fields. An important needleless electrospinning technique using a rotary fiber generator such as ball, cylinder, disc and wire coil, and the effects of the fiber generator, its shape and dimension, as well as operating parameters on electrospinning performance, fiber morphology and productivity are described. A method to calculate the electric field and analyze electric field profiles in an electrospinning zone is provided. The influence of the fiber collector on fiber quality is also discussed.

Electrospun Antimicrobial PVDF DTAB Nanofibrous Membrane for Air Filtration Effect of DTAB on Structure Morphology Adhesion and Antibacterial Properties

Electrospun Antimicrobial PVDF   DTAB Nanofibrous Membrane for Air Filtration  Effect of DTAB on Structure  Morphology  Adhesion  and Antibacterial Properties Book
Author : Anonim
Publisher : Unknown
Release : 2018
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Electrospun Antimicrobial PVDF DTAB Nanofibrous Membrane for Air Filtration Effect of DTAB on Structure Morphology Adhesion and Antibacterial Properties book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanoscale Materials in Water Purification

Nanoscale Materials in Water Purification Book
Author : Sabu Thomas,Daniel Pasquini,Shao-Yuan Leu,Deepu A Gopakumar
Publisher : Elsevier
Release : 2018-11-14
ISBN : 0128139277
Language : En, Es, Fr & De

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Book Description :

Novel nanoscale materials are now an essential part of meeting the current and future needs for clean water, and are at the heart of the development of novel technologies to desalinate water. The unique properties of nanomaterials and their convergence with current treatment technologies present great opportunities to revolutionize water and wastewater treatment. Nanoscale Materials for Water Purification brings together sustainable solutions using novel nanomaterials to alleviate the physical effects of water scarcity. This book covers a wide range of nanomaterials, including noble metal nanoparticles, magnetic nanoparticles, dendrimers, bioactive nanoparticles, polysaccharidebased nanoparticles, nanocatalysts, and redox nanoparticles for water purification. Significant properties and characterization methods of nanomaterials such as surface morphology, mechanical properties, and adsorption capacities are also investigated Explains how the unique properties of a range of nanomaterials makes them important water purification agents Shows how the use of nanotechnology can help create cheaper, more reliable, less energy-intensive, more environmentally friendly water purification techniques Includes case studies to show how nanotechnology has successfully been integrated into water purification system design

Flux of Emulsions Through Electrospun Membranes

Flux of Emulsions Through Electrospun Membranes Book
Author : Alexandra Aulova,Igor Emri
Publisher : Unknown
Release : 2019
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Flux of Emulsions Through Electrospun Membranes book written by Alexandra Aulova,Igor Emri, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Electrospun Nanofibrous Membrane

Electrospun Nanofibrous Membrane Book
Author : Yang Liu (Ph. D.)
Publisher : Unknown
Release : 2012
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Electrospun Nanofibrous Membrane book written by Yang Liu (Ph. D.), available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Advanced Nanofibrous Materials Manufacture Technology based on Electrospinning

Advanced Nanofibrous Materials Manufacture Technology based on Electrospinning Book
Author : Yanbo Liu,Ce Wang
Publisher : CRC Press
Release : 2019-04-23
ISBN : 1498781136
Language : En, Es, Fr & De

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Book Description :

This book comprehensively addresses advanced nanofiber manufacturing based on electrospinning technology. The principles, relationships between process parameters and structure, morphology and performance of electrospun nanofibers and nanomaterials, and the methods for enhanced field intensity and uniform distribution are discussed. The electric field intensity and distribution during electrospinning is also analyzed based on finite element analysis on both the needle and the needleless electrospinning. Furthermore, the modification techniques for improved nanomaterials strength are covered, aiming to provide effective avenues towards the manufacture of stronger nanofiber or nanomaterial products.