surface modification of polypropylene membrane by

Surface Modification of Asymmetric Polysulfone

The effects of ultraviolet (UV) irradiation for surface modification of hydrophobic asymmetric polysulfone membranes have been investigated The asymmetric polysulfone (PSF) membranes were prepared by phase inversion method using 19%-25% of PSF in two solvents viz dimethylacetamide (DMF) and Acetone (Ac) collectively

Expanded range of Tekfil™ polypropylene depth filter

Porvair Filtration Group is pleased to present its comprehensive range of Tekfil™ polypropylene depth filter cartridges suitable for a broad range of process and industrial applications The consolidated range of products enhances Porvair's offering now encompassing solutions for a broad range of sectors such as food and beverage pharmaceutical and chemical

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It was suggested that improving the hydrophobicity of polypropylene membrane by surface modification may be an effective way to improve the long-term operating performance of membrane contactors Therefore the polypropylene hollow fibers were modified by depositing a thin superhydrophobic coating on the membrane surface to improve their hydrophobicity The mixture of

Surface modification of poly(vinylidene fluoride) hollow

In order to study the effect of membrane modification on membrane flux continuous experiments over 5 h were conducted The inlet gas contained CO 2 40% and CH 4 was used as the equilibrium gas The gas flow rate and the liquid flow rate were 200 ml min −1 and 30 ml min −1 respectively

Surface Modification of Polypropylene Membrane to

• Modification was successful Future Work • Conduct membrane distillation with modified membrane • Investigate fouling resistance • Compare data with unmodified membrane fouling resistance Surface Modification of Polypropylene Membrane to Investigate Membrane Fouling Resistance Student: Tharaka Hawpe Gamage Degree: M S May 2019

Surface Modification of CTA

Surface Modification of CTA-FO Membrane by CO2 Plasma Treatment The aim of this research was to examine the influence of CO 2 plasma activation on CTA membrane in order to improve its the hydrophilicity This research also investigated the enhancement of CTA membrane whether it could increase the anti-fouling in FO process The plasma power was used varied in the range of 10-50 W

Surface Modification of Polypropylene Microporous

Surface Modification of Polypropylene Microporous Membrane by the Immobilization of Dextran YANG Qian 1 XU Zhi-Kang 1 Mathias Ulbricht 2 1 Institute of Polymer Science College of Chemical Engineering of Material Zhejiang University Hangzhou 310027 China 2 Institut fr Technische Chemie Universitt Essen 45117 Essen Germany Received:2004-08-31 Online:2005-01-10 Published:2005-01

Microorganisms

Biofouling control by hydrophilic surface modification of polypropylene feed spacers by plasma polymerisation Katherine Reid Mike Dixon Con Pelekani Karyn Jarvis Mason Willis Yang Yu SA Water 250 Victoria Square Adelaide 5000 SA Australia Abstract Biofouling compromises the efficiency of membrane desalination systems especially energy and product water quality Feed spacers

Surface modification of polysulfone membranes applied for

1 Surface modification of polysulfone membranes applied for a membrane reactor with immobilized alcohol dehydrogenase Christian Hoffmanna Harald Silaua Manuel Pinelob John M Woodleyc Anders E Daugaarda* aDanish Polymer Centre Department of Chemical and Biochemical Engineering Technical University of Denmark Sltofts Plads Building 229 Tongwei-2800 Kgs

Surface evaluation of reactive plasma

The surface modification of micro-porous polypropylene membrane is achieved by low-pressure reactive plasma treatments using Ar and He gases The reactive plasma modified microporous polypropylene membranes which are used as the battery separators were evaluated by the electrochemical performance and static contact angle analysis

Surface Modification of Polypropylene Microporous Membrane

Surface Modification of Polypropylene Microporous Membrane by Atmospheric-pressure Plasma Induced N-vinyl-2-pyrrolidone Graft Polymerization 【】:Membrane surfaces modified with poly(N-vinyl-2-pyrrolidone)(PNVP)can be endowed with hydrophilicity biocompatibility and functionality In this work atmospheric pressure dielectric barrier discharge plasma graft polymerization of

Modification of biomaterials surface by mimetic cell

Modification of biomaterials surface by mimetic cell membrane for improving biocompatibility to imitate the excellent biological and physiological properties of the natural cell membrane is an important research area in materials science Numerous studies have been attempted to construct a mimetic cell membrane biointerface composed of phosphorylcholine (PC)-containing polymers or other

Hydrophilization of microporous polypropylene

To obtain these results it is necessary to modify the membrane chemically by grafting polar monomers onto the surface and also within the pore surface of the membrane 20 Recently Bamford and Al-Lamee39 reported a simple chemical modification method for the surface functionalization and grafting of polar monomers onto microporous polypropylene (PP) hollow fibers and also onto nonporous

Surface modification of polypropylene membrane for the

Surface modification of polypropylene membrane for the removal of iodine using polydopamine chemistry Chemosphere ( IF 5 108) Pub Date : 2020-02-04 DOI: 10 1016/j chemosphere 2020 126079 Zinat Changani Amir Razmjou Asghar Taheri-Kafrani Majid Ebrahimi Warkiani Mohsen Asadnia

polypropylene microporous membranes

Surface Modification of Polypropylene Microporous Membranes to Improve the Biocompatibility : : Immobilization of Lipase on Polypropylene Microporous Membranes: : In an attempt to minimize the influence of these unfavorable interactions the immobilization of

Entrapping Method Surface Modification for

In this work surface modification with UV irradiation using photoinitiator entrapping method was used to produce membrane adsorber This is based on the simplicity and the economic value of such method [1 2] Polypropylene microporous membrane was used as substrate benzophenone was used as photoititiator in different range of concentration (0 01-1 wt %) and Acrylic acid (AA) Acrylamide (AAm

Surface modification of PVDF hollow fiber membrane to

Surface Modification of PVDF Hollow Fiber Membrane to Enhance Hydrophobicity Using Organosilanes Sermpong Sairiam 1 2 Chun Heng Loh 3 4 Rong Wang 3 4 Ratana Jiraratananon5 1International Postgraduate Programs in Environmental Management Graduate School Chulalongkorn University Bangkok 10330 Thailand 2Center of Excellence for Environmental and Hazardous Waste

Teffil™ and Teffil™ HF Superior PTFE Membrane Filters

Teffil™ and Teffil™ HF Superior PTFE Membrane Filters These cartridge filters are suitable for use within a number of microelectronics process and chemical applications This chemically inert filter range offers the removal of fine particulate from 0 05-10 micron in challenging operating conditions

Amino modification of a polypropylene membrane

Amino modification of a polypropylene membrane surface and its application in gold nano-particle adsorption: LV Wei YANG WanTai: College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Surface mineralized modification of microporous

The results confirmed that Ca CO3 mineral was dispersed uniformly on the surface of MPPM Due to intrinsic wettability of CaCO3 mineral the mineralized membranes were superhydrophilic and showed excellent water permeability with high pure water flux(up to 6450 Lm-2h-1) and low membrane permeation resistance Under the drive of external pressure of 0 01 MPa water could permeate

Polymer Surface Modification: Relevance to Adhesion

The topic of polymer surface modification is of tremendous contemporary interest because of its critical importance in many and varied technological applications where polymers are used Currently there is brisk research activity in unraveling the mechanisms of surface modification and finding ways to prolong the life of surface treatment Also the

Antibacterial and Hemocompatibility Switchable

In this article a facile approach to fabricate a biofunctional polypropylene nonwoven fabric membrane (PP NWF) with a switchable surface from antibacterial property to hemocompatibility is presented In the first step a cationic carboxybetaine ester monomer [(2-(methacryboxy) ethyl)]-N N-dimethylamino-ethylammonium bromide methyl ester (CABA-1-ester) was synthesized

What is Plasma Treatment and What Can It Do For You?

Plasma Surface Treatment Solutions - Atmospheric Plasma Vacuum Plasma and Cold Active Plasma for solving adhesion wetting problems Plasma surface modification is the solution for the cleaning activation of component surfaces before further processing Local UK Supplier with fully equipped laboratory in Lichfield Staffordshire

Biofouling control by hydrophilic surface modification

Biofouling control by hydrophilic surface modification of polypropylene feed spacers by plasma polymerisation Katherine Reid Mike Dixon Con Pelekani Karyn Jarvis Mason Willis Yang Yu Research output: Contribution to journal › Article 14 Citations (Scopus) Abstract Biofouling compromises the efficiency of membrane desalination systems especially energy and product water quality

Application of wet chemical surface functionalization

Application of wet chemical surface functionalization method in preparation of anti-fouling polysulfone microporous membrane for water treatment Journal of Water and Environmental Nanotechnology 4 4 2019 308-320 doi: 10 22090/jwent 2019 04 005

Surface modification of polyethylene and polypropylene in

Surface modification of polyethylene and polypropylene in atmospheric pressure glow discharge View the table of contents for this issue or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience

1 Introduction

Surface chemistry and morphology of membranes play an important role in the efficiency of the membrane modification process [8] Generally the objective of the modification is not only to increase the flux and/or selectivity but also to improve the chemical resistance [9]

Superhydrophobic membrane: progress in preparation

Superhydrophobic membrane that is highly resistant to wetting by aqueous solution has gained great attention because of its potential to be applied in many emerging membrane processes such as membrane gas absorption (MGA) and membrane distillation (MD) Numerous approaches have been proposed to obtain membranes with superhydrophobic surface from materials with various degrees of

Surface modification of poly(vinylidene fluoride) hollow

A uniform surface coating on the PVDF upper layer resulted from the presence of micrometre and nanometre-sized roughness on the surface of the PVDF membrane which was achieved with a SiO2 concentration of 4 44 mg ml-1 (0 2 g/45 ml) in the coating solution As a result the water contact angle of the modified surface was recorded as 155 3 which is higher than that of the pristine surface

Nanofiltration extends the range of membrane filtration

Nanofiltration is a pressure driven membrane process between reverse osmosis and ultrafiltration The rejection is low for salts with monovalent anion and nonionized organics with molecular weight below 150 while high for salts with di‐ and multivalent anions and organics with molecular weight above 300

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