Enhancing the performance of PVDF membranes by hydrophilic surface modification via amine treatment

Sun, Chenggui; Feng, Xinbin

doi:10.1016/j.seppur.2017.05.022

Cited by 94 publications

(29 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, it is reasonable to conclude that increasing membrane hydrophilicity is a good approach to improve the membrane performance. In this regard, modifications of polysulfone membranes to increase their hydrophilicity have been carried out in several ways …”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Investigation of structure‐performance properties of a special type of polysulfone blended membranes

Mahmoudian

Kochameshki

Mahdavi

et al. 2018

Polymers for Advanced Techs

View full text Add to dashboard Cite

Membranes require superior mechanical strength due to applied harsh conditions. The mechanical properties of membranes decrease with increasing hydrophilicity of its elements. In this study, mechanical properties were investigated for two special blended membranes which were made by blending polysulfone with (polysulfone-gpoly (n-butylacrylate) and polysulfone-g-poly (tert-butylacrylate) as components. All of the prepared membranes were characterized by differential scanning calorimeter, thermal gravimetric analysis, field emission scanning electron microscope, and atomic electron microscope and were investigated in terms of pure water flux, water contact angle, molecular weight cut off, and morphology. It was found that water contact angle decreased from 73.6°which belongs to neat membrane decreased to 46°for blended membranes containing higher amounts of copolymers; however, the pure water flux increased with increasing copolymer content considerably compared with the neat membrane. Also, molecular weight cut off increased aggressively. Furthermore, mechanical properties including tensile strength, Young modulus, and elongation at break were measured and compared with the neat polysulfone membrane.Results showed that the tensile strength and modulus decreased with an increase in the copolymers content, despite the increase in the elongation at break. The effect of applied pressure on the membrane structure and also bursting strength were studied, and it has been proved that not only the structure of the membranes but also their performance is strongly affected by the composition of the membranes.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED: Investigation of structure‐performance properties of a special type of polysulfone blended membranes

Mahmoudian

Kochameshki

Mahdavi

et al. 2018

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…Filter-incorporation method is widely used in industrial applications due to its low cost and easier to use. On comparison of metal cations properties they observed that Al 3+ and Mg 2+ based GO membranes possessed more properties as compared to Cu 2+ and Cr 3+ based GO membranes [198][199][200][201][202][203][204][205].…”

Section: Role Of Graphene Oxide In Polymer Nano-composite Membranesmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

190

View full text Add to dashboard Cite

During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

show abstract

“…Another explanation is that there is similarity between the spectral patterns of zwitterions molecules, PVP and the PVDF membrane [64]. However, two distinct bands (1540 & 1570 cm -1 ) were observed for the Phos-10kGy membranes and might be attributed to NH bending in amide II compounds [65].…”

Section: Membrane Surface Characterizationmentioning

confidence: 98%

Electron beam irradiation of polyvinylidene fluoride/polyvinylpyrrolidone ultrafiltration membrane in presence of zwitterions molecules evaluation of filtration performances

Nguyen

Loulergue

Karpel

et al. 2019

Radiation Physics and Chemistry

View full text Add to dashboard Cite

To cite this version:M.N. Nguyen, Patrick Loulergue, N. Karpel, B. Teychene. Electron beam irradiation of polyvinylidene fluoride/polyvinylpyrrolidone ultrafiltration membrane in presence of zwitterions molecules evaluation of filtration performances. Radiation Physics and Chemistry, Elsevier, 2019, 159, pp. Abstract:In this research, the commercial PVDF/PVP membrane was irradiated at 10 and 100 kGy with electron beam (EB) to improve its fouling resistance capacity. Membrane irradiation was conducted in the presence of zwitterionic molecules (L-Cysteine, Phosphocholine) and with 2-(Dimethylamino)ethyl methacrylate). The main goal was to investigate the impact of irradiation in presence of zwitterions on the modification route of PVP within the polymer blend and to relate it to filtration performances. Globally, EB irradiation enhanced the membrane's filtration performance but this improvement cannot be sustained after several filtration cycles. Membranes irradiated with the lower absorbed dose (10 kGy) displayed higher permeate flux and lower cake resistance than membranes irradiated with the 100 kGy dose. The best sustainable anti-fouling capacity was observed for the membrane irradiated with 10 kGy in the presence of L-Cysteine. Membrane characterization showed that the membrane surface was modified by EB irradiation, with features such as smoother surface, modification of PVP and increased amount of crosslinking emphasizing the potential formation of PVP hydrogels. Despite obvious changes observed on membrane surface depending on the chosen compounds used for irradiation, membranes' analyses failed to identify sulphur, phosphorous grafted moieties. From this study, it is confirmed that membranes EB irradiation in presence of zwitterionic molecules is a promising technique to modify the PVDF/PVP blended polymer.

show abstract

Enhancing the performance of PVDF membranes by hydrophilic surface modification via amine treatment

Cited by 94 publications

References 41 publications

RETRACTED: Investigation of structure‐performance properties of a special type of polysulfone blended membranes

RETRACTED: Investigation of structure‐performance properties of a special type of polysulfone blended membranes

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Electron beam irradiation of polyvinylidene fluoride/polyvinylpyrrolidone ultrafiltration membrane in presence of zwitterions molecules evaluation of filtration performances

Contact Info

Product

Resources

About