Modification of polysulfone membranes via surface-initiated atom transfer radical polymerization

Dong, Han-Bang; Xu, Yuan; Yi, Zhuan; Shi, Junli

doi:10.1016/j.apsusc.2009.06.075

Cited by 67 publications

(26 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Relative to other grafting methods, SI-ATRP reaction conditions are flexible and it can be done in environmentally friendly solvent, such as water. Xu et al grafted hydrophilic poly (poly (ethylene glycol) methyl ether methacrylate) and poly (glycidylmethacrylate) brushes onto Chloromethylated polysulfone (CMPSF) membrane via SI-ATRP to modify surface property [23]. In our previous work, living behavior of acrylamide SI-ATRP on CMPSF membrane surface and linear control of hydrophilic property was studied [24].…”

Section: Introductionmentioning

confidence: 98%

Synthesis and antibacterial activity of copper-immobilized membrane comprising grafted poly(4-vinylpyridine) chains

Qiu

Zhang

et al. 2011

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

Synthesis and antibacterial activity of copper-immobilized membrane comprising grafted poly(4-vinylpyridine) chains

Qiu

Zhang

et al. 2011

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Due to its low cost, superior membrane-forming ability and good mechanical and anti-compaction properties, polysulfone (PSf) is widely used to prepare ultrafiltration (UF) membranes [1][2][3]. However, the hydrophobic nature of PSf leads to the low permeability and high fouling of the PSf membranes, which reduce the membranes' life and limit their application [4,5]. Therefore, the modification of PSf membranes is becoming increasingly important.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of PSf Hollow Fiber Membranes with Different Molecular Weight Hyperbranched Polyester Using Pentaerythritol as Core

Zhao

Wei

et al. 2020

Polymers

View full text Add to dashboard Cite

A homologous series of hyperbranched polyesters (HBPEs) was successfully synthesized via an esterification reaction of 2,2-bis(methylol)propionic acid (bis-MPA) with pentaerythritol. The molecular weights of the HBPEs were 2160, 2660, 4150 and 5840 g/mol, respectively. These HBPEs were used as additives to prepare polysulfone (PSf) hollow fiber membranes via non-solvent induced phase separation. The characteristic behaviors of the casting solution were investigated, as well as the morphologies, hydrophilicity and mechanical properties of the PSf membranes. The results showed that the initial viscosities of the casting solutions were increased, and the shear-thinning phenomenon became increasingly obvious. The demixing rate first increased and then decreased when increasing the HBPE molecular weight, and the turning point was 2660 g/mol. The PSf hollow fiber membranes with different molecular weights of HBPEs had a co-existing morphology of double finger-like and sponge-like structures. The starting pure water contact angle decreased obviously, and the mechanical properties improved.Polymers 2020, 12, 383 2 of 15 effects of TMB-5 on the PVDF membranes. With the addition of TMB-5, the structures of the membranes were interconnected and bi-continuous. Yuan et al. [13] investigated the effects of perfluorosulfonic acid (PFSA) on PVDF hollow fiber membranes. With the addition of PFSA, the morphology of the membrane cross-section was altered, and finger-like macrovoids developed from inside the skin layer of the nascent membrane. With an increase in the PFSA content, the membranes showed improved wetting properties. Xu et al. [16] studied the effects of poly(ethyleneglycol) (PEG) with various molecular weights (M w = 200, 600, 2000, 6000 and 10,000 Da) on the performance of polyethersulfone (PES) hollow fiber ultrafiltration membranes. They reported that not only the additive content but also the additive molecular weight significantly determined the performance of the membranes. When the molecular weight of PEG increased from 200 to 10,000 g/mol, the membrane structures were converted from a double-layer finger-like structure to microvoids in the form of spheres or ellipsoids, and the pure water permeation fluxes increased from 22.0 to 64.0 L/m 2 h, but the mechanical properties worsened.Hyperbranched polyesters (HBPEs) based on 2,2-bis(methylol)propionic acid (bis-MPA) have been a research focus in recent years due to their high functionality, globular structure, low solution, melt viscosity, good thermal stability and high solubility [17][18][19]. Currently, few studies have reported using HBPEs as additives to prepare hollow fiber membranes, but Zhao et al. [20][21][22] investigated the effect of hyperbranched polyglycerol (HPG) and its derivatives on the morphology and properties of polyvinylidene fluoride porous membranes. Compared with membranes modified by linear PEG as additives, HPG not only acted as a pore-forming agent but also as a hydrophilic modifier. In our previous work [23], the effects of HBPE conte...

show abstract

“…However, at present, the operating costs of PSf membrane processes are still quite high because of fouling, limitations on filtering capacity, and longevity, which are due to their high hydrophobic properties [2-4, 6, 7]. Recently, the increase in hydrophilicity and the minimization of fouling of PSf membranes have been tested through a variety of solutions including modifying the surface [8,9], coating onto the membrane surface [10][11][12][13][14], and blending the hydrophilic materials into the membrane casting solution before fabricating the membrane [2,5,[15][16][17][18][19][20]. Among the aforementioned methods, the method of blending PSf with some hydrophilic polymers or inorganic nanoparticles to increase the surface hydrophilic and antifouling properties has proven remarkably effective [2,5,[20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Nguyen

Ngo

Dinh

et al. 2019

Journal of Chemistry

View full text Add to dashboard Cite

In general, the polysulfone (PSf ) membranes are popular choices for water treatment because they have high thermal stability and good chemical resistance. On the other hand, the filtration capacity of the polysulfone membrane is limited because of its low water flux and poor antifouling ability, which are caused by the low surface hydrophilicity of the membranes. In this research, blending of graphene oxide (GO) or graphene oxide-titanium dioxide (GO-TiO 2 ) mixture into the polysulfone matrix had been carried out through the phase inversion method to enhance the hydrophilic and antifouling properties. Methods such as energydispersive X-ray spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and water contact angle measurement were used to examine the surface properties of the prepared membranes. Experimental results have led to a conclusion that graphene oxide can be stabilized into prepared membranes, and then, by reducing the water contact angle values, the surface of these membranes becomes hydrophilic, which increases the permeability and the water flux of methylene blue from the aqueous feed solution, improving the membrane's antifouling resistance.

show abstract

Modification of polysulfone membranes via surface-initiated atom transfer radical polymerization

Cited by 67 publications

References 31 publications

Synthesis and antibacterial activity of copper-immobilized membrane comprising grafted poly(4-vinylpyridine) chains

Synthesis and antibacterial activity of copper-immobilized membrane comprising grafted poly(4-vinylpyridine) chains

Structure and Properties of PSf Hollow Fiber Membranes with Different Molecular Weight Hyperbranched Polyester Using Pentaerythritol as Core

Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Contact Info

Product

Resources

About