The effect of sulfonated polysulfone on the compatibility and structure of polyethersulfone-based blend membranes

Li, Shiwen; Cui, Zhenyu; Zhang, Lei; He, Benqiao; Li, Jianxin

doi:10.1016/j.memsci.2016.04.035

Cited by 142 publications

(73 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, water uptake results for blended membranes showed a substantial increment in the absorbed water and proved the hydrophilic nature of modified membranes. In this respect, it should be noted that the presence of hydrophilic ingredients in the membrane matrix affected the porosity and cross‐sectional structure results in more and bigger pores, and consequently, performance properties such as pure water flux improved . These changes in the membrane structure were clearly observed in the FESEM images (Figures and ), and the obtained porosity percentage from the water uptake test (Table ) confirms it entirely.…”

Section: Resultssupporting

confidence: 52%

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: Resultssupporting

confidence: 52%

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

“…To overcome these issues in the preparation of membranes with enhanced hydrophilicity, significant efforts have been made by introducing sulfonic acid groups (SO 3 H) into the structure of the hydrophobic polymeric matrix. This can be achieved by blending the polysulfone hydrophobic matrix with a sulfonated polymer [25,26]. These membranes combine all the aforementioned properties of the matrix with the hydrophilicity imparted by the polymer-bearing sulfonic acid groups.…”

Section: Introductionmentioning

confidence: 99%

“…These membranes combine all the aforementioned properties of the matrix with the hydrophilicity imparted by the polymer-bearing sulfonic acid groups. The presence of these groups not only increases water flux and water permeability, but also improves the antifouling action [25,26]. Besides, such groups can also offer ion-exchange properties to the membranes [27,28], broadening their application fields.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Porous Polymeric Membranes Based on a Pyridine Containing Aromatic Polyether Sulfone

et al. 2019

View full text Add to dashboard Cite

Polymeric membranes, based on a polysulfone-type aromatic polyether matrix, were successfully developed via the non-solvent induced phase separation (NIPS) method. The polyethersulfone type polymer poly[2-(4-(diphenylsulfonyl)-phenoxy)-6-(4-phenoxy) pyridine] (PDSPP) was used as the membrane matrix, and mixed with its sulfonated derivative (SPDSPP) and a polymeric porogen. The SPDPPP was added to impart hydrophilicity, while at the same time maintaining the interactions with the non-sulfonated aromatic polyether forming the membrane matrix. Different techniques were used for the membranes’ properties characterization. The results revealed that the use of the non-sulfonated and sulfonated polymers of the same polymeric backbone, at certain compositions, can lead to membranes with controllable porosity and hydrophilicity.

show abstract

“…A dense layer on the top surface and a spherulitic matrix was formed for the three membranes. This observation could be explained by considering the high hydrophobicity of PVDF, which caused a fast demixing with the formation of a skin layer [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

Polyvinylidene Fluoride-Graphene Oxide Membranes for Dye Removal under Visible Light Irradiation

et al. 2020

View full text Add to dashboard Cite

In this study, polyvinylidene fluoride (PVDF)-graphene oxide (GO) membranes were obtained by employing triethyl phosphate (TEP) as a solvent. GO nanosheets were prepared and characterized in terms of scanning and transmission electron microscopy (SEM and TEM, respectively), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), chemical analysis and inductively coupled plasma mass spectroscopy (ICP). Two different phase inversion techniques, Non-Solvent Induced Phase Separation (NIPS) and Vapour-Induced Phase Separation (VIPS)/NIPS, were applied to study the effect of fabrication procedure on the membrane structure and properties. Membranes were characterized by SEM, AFM, pore size, porosity, contact angle and mechanical tests, and finally tested for photocatalytic methylene blue (MB+) degradation under visible light irradiation. The effect of different pH values of dye aqueous solutions on the photocatalytic efficiency was investigated. Finally, the influence of NaCl salt on the MB+ photodegradation process was also evaluated.

show abstract

The effect of sulfonated polysulfone on the compatibility and structure of polyethersulfone-based blend membranes

Cited by 142 publications

References 36 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

Preparation of Porous Polymeric Membranes Based on a Pyridine Containing Aromatic Polyether Sulfone

Polyvinylidene Fluoride-Graphene Oxide Membranes for Dye Removal under Visible Light Irradiation

Contact Info

Product

Resources

About