Structure-performance-fouling studies of polysulfone microfiltration hollow fibre membranes

Singh, Puyam S.; Parashuram, K.; Maurya, Sandip; Ray, Paramita; Reddy, A.V.R.

doi:10.1007/s12034-012-0362-y

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…From a structural perspective, these devices each use an internal polyethylene terephthalate (PET) yarn scaffold. The membrane, which is porous and manufactured using traditional polymer phase-inversion techniques, allows oxygen and nutrients in the vitreous to freely diffuse inward, and allows therapeutics to freely diffuse outward as well as it resists protein fouling by serum proteins such as those found in the vitreous (Singh et al, 2012). The potency of this system is supported by evidence showing the benefits of CNTF as a potential therapeutic for retinal degenerative diseases (Bok et al, 2002;Rhee et al, 2013) as it reduces photoreceptor loss associated with degeneration of the cells of the outer retina.…”

Section: Delivery Of Ciliary Neurotrophic Factor From Encapsulated Cementioning

confidence: 99%

3D cell-laden polymers to release bioactive products in the eye

Orive

Santos‐Vizcaíno

Pedraz

et al. 2019

Progress in Retinal and Eye Research

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Section: Delivery Of Ciliary Neurotrophic Factor From Encapsulated Cementioning

confidence: 99%

3D cell-laden polymers to release bioactive products in the eye

Orive

Santos‐Vizcaíno

Pedraz

et al. 2019

Progress in Retinal and Eye Research

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“…203 207 However, PVP is attacked by oxidizing agents such as sodium hypochlorite. 208 Therefore, PVP based AEMs may not be stable in the long term for VRFB applications. Jung et al studied the chemical stability of quaternary ammonium PS AEMs in a solution containing 1.5 M VO 2 + and 3 M H 2 SO 4 for 90 days.…”

Section: Chemical Stability Of Aemsmentioning

confidence: 99%

A review on recent developments of anion exchange membranes for fuel cells and redox flow batteries

et al. 2015

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1Cation exchange membranes (CEMs) have attracted tremendous attention in electrochemical 2 energy conversion and storage systems owing to their high proton conductivity and chemical 3 stability. However, applications of CEMs suffer from a number of disadvantages such as 4 requirement of costly platinum catalyst, and high crossover of fuels or positively charged redox 5 species due to the electro-osmotic drag. Anion exchange membranes (AEMs) have shown 6 promising characteristics to overcome some of the problems associated with CEMs; the 7 advantages of AEMs being selective transport anionic charge carriers, lower crossover of 8 cationic redox couples, and facile reaction kinetics in energy conversion processes. These unique 9 properties of AEMs result mainly from the density and distribution of positively charged 10 functional groups, along with a macromolecular polymer backbone. As a result, there has been 11 an increasing demand for the development of AEMs with better selectivity, higher chemical 12 stability and conductivity, and a lot of work have been carried out in this area. The aim of this 13 review is to discuss developments in the synthesis and applications of AEMs in the field of 14 electrochemical energy conversion and storage, on which many researchers are working in recent 15 years. 16 2 for sustainable energy sources, and the need for energy security have forced the migration from 3 hydrocarbon based fossil fuels to renewable and environmentally friendly energy sources. 1 Also, 4 an increased awareness of the environmental issues along with a potential energy shortage has 5 led to accelerated research efforts in energy conversion and storage. Distributed power 6 generation systems based on fuel cells are expected to be an important power source in the future 7 due to their advantages, such as attractive efficiency, low carbon emission, and flexible 8 operations. 2 However, their inherent characteristics such as a long start-up time and poor 9 response to immediate power demands are major obstacles for the commercialization of such 10 systems. Therefore, hybrid distributed power systems based on fuel cells and batteries are 11 introduced, in order to best utilize the individual characteristics of each device. 3,4 Most 12 electrochemical conversion and storage systems such as fuel cells and redox flow batteries are 13 dependent on ion exchange membranes (IEMs). 5-7 These devices can work only if the IEM 14 separates the anode and the cathode chambers and mediate the conducting ions (e.g., protons and 15 hydroxide ions) for the electrochemical reactions in the system. Apart from good conducting 16 properties, some other requirements such as crossover and chemical stability are major concerns 17 in the development of IEMs. 8,9 18 Polymer electrolyte membrane fuel cells (PEMFC) 19 While fuel cells were invented in 1839 by Sir William Grove, their first practical use was 20 reported only in the 1950s in the NASA Apollo space program. 10 Over the past two decades, fuel 21 cell research has gained pace due...

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“…This is primarily because the high mechanical strength properties of the polymer material used in fabricating the membranes make its application in water treatment desirable. The main drawback of the membranes produced from PES is that they are relatively hydrophobic and have an inherent problem of fouling [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Assessment of ZnO Modified Polyethersulfone Membranes for Fouling Reduction of Bovine Serum Albumin

Dipheko

Matabola

Kotlhao

et al. 2017

International Journal of Polymer Science

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ZnO/PES composite membranes were fabricated by phase inversion method using DMAc as a solvent. The structure of ZnO was investigated using TEM, SEM, XRD, and TGA. TEM images of ZnO nanoparticles were well-defined, small, and spherically shaped with agglomerated nanoparticles particles of 50 nm. The SEM and XRD results were an indication that ZnO nanoparticles were present in the prepared ZnO/PES composites membranes. Contact angle measurements were used to investigate surface structures of the composite membranes. The amount of ZnO nanoparticles on PES membranes was varied to obtain the optimal performance of the composite membranes in terms of pure water flux, flux recovery, and fouling resistance using the protein bovine serum albumin (BSA) as a model organic foulant. The results showed that addition of ZnO to PES membranes improved the hydrophilicity, permeation, and fouling resistance properties of the membranes. Pure water flux increased from a low of 250 L/m2h for the neat membrane to a high of 410 L/m2h for the composite membranes. A high flux recovery of 80–94% was obtained for the composite membranes. The optimal performance of the composite membranes was obtained at 1.5 wt% of ZnO.

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Structure-performance-fouling studies of polysulfone microfiltration hollow fibre membranes

Cited by 10 publications

References 20 publications

3D cell-laden polymers to release bioactive products in the eye

3D cell-laden polymers to release bioactive products in the eye

A review on recent developments of anion exchange membranes for fuel cells and redox flow batteries

Fabrication and Assessment of ZnO Modified Polyethersulfone Membranes for Fouling Reduction of Bovine Serum Albumin

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