Polysulfone-based amphiphilic polymer for hydrophilicity and fouling-resistant modification of polyethersulfone membranes

Yi, Zhuan; Zhu, Liping; Xu, Yuan; Zhao, Yifan; Ma, Xiaoting; Zhu, Bao-Ku

doi:10.1016/j.memsci.2010.08.001

Cited by 141 publications

(43 citation statements)

References 40 publications

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“…These surfaces have been particularly applied to investigations surrounding marine related fouling. Examples of amphiphilic materials included: branched fluro-polymers with polyethylene glycol (PEG) chains [62,63]; perfluroethylene and PEG [64]; polysolfone-graft-poly (ethylene glycol) methyl ether methacrylate [65]. One issue is that many of these materials contain fluro-polymers that are present in the form of long perfluroalkyl chains, which can degrade to form toxic perfluroalkyl acids [7].…”

Section: Amphiphilic Materialsmentioning

confidence: 99%

Design of intelligent surfaces for energy intensive processing industry

2018

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Abstract.There are three different factors that can affect adhesion: the process fluid, the processing conditions and the surface of the processing equipment. Of these three factors, the surface properties of the processing equipment are the factor that offers the greatest opportunity for manipulation. The two key surface properties that have been identified to reduce adhesion are the surface energy and the surface topography. The surface energy of a material determines its degree of wettability and, a surface's affinity for water. In previous studies the surface energy of materials have been leveraged in order to create a surface with reduced levels of fouling through surface modification or the addition of polymer coatings with varying degrees of hydrophobicity. In addition, the topography of surfaces has been modified to reduce the level of particle adhesion. These modifications involve creating either a structured or random porous microstructure on the surface. Additional methods identified to reduce fouling include the application of liquid infused porous surfaces at low shear conditions and the use of non-contact heating through techniques such as microwave processing.

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Section: Amphiphilic Materialsmentioning

confidence: 99%

Design of intelligent surfaces for energy intensive processing industry

2018

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“…In many investigations, short-term (2-6 h) static protein or bacterial cell adhesion tests were performed [11,[42][43][44]. In some other cases short-term (2-24 h) cross-flow or dead end filtration tests were used to evaluate the impact of the coating on biofilm accumulation [9,16,[45][46][47].…”

Section: Need For Long-term Biofouling Studiesmentioning

confidence: 99%

“…Many studies showed that compared to uncoated membranes, less fouling was observed when membranes surfaces had a hydrophilic coating [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

Bucs¹,

Linares²,

Siddiqui³

et al. 2017

Desalination and Water Treatment

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a b s t r a c tSurface coating of membranes may be a promising option to control biofilm development and biofouling impact on membrane performance of spiral-wound reverse osmosis (RO) systems. The objective of this study was to investigate the impact of an amphiphilic copolymer coating on biofilm formation and biofouling control. The coating was composed of both hydrophilic and hydrophobic monomers hydroxyethyl methacrylate (HEMA) and perfluorodecyl acrylate (PFA), respectively. Commercial RO membranes were coated with HEMA-PFA copolymer film. Long and short term biofouling studies with coated and uncoated membranes and feed spacer were performed using membrane fouling simulators (MFSs) operated in parallel, fed with water containing nutrients. For the long-term studies pressure drop development in time was monitored and after eight days the MFSs were opened and the accumulated biofilm on the membrane and spacer sheets was quantified and characterized. The presence of the membrane coating was determined using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). Results showed that the amphiphilic coating (i) delayed biofouling (a lower pressure drop increase by a factor of 3 and a lower accumulated active biomass amount by a factor of 6), (ii) influenced the biofilm composition (23% lower polysaccharides and 132% higher protein content) and (iii) was still completely present on the membrane at the end of the biofouling study, showing that the coating was strongly attached to the membrane surface. Using coated membranes and feed spacers in combination with advanced cleaning strategies may be a suitable way to control biofouling.

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“…In addition to increasing membrane permeability, hydrophilicity is one of the most important properties of membranes that determine the antifouling ability [16,36,37]. A number of previous studies have attempted to increase membrane hydrophilicity by doping nanoparticles mostly through the blending additive method.…”

Section: Membrane Characterizationmentioning

confidence: 99%