A facile method of surface modification for hydrophobic polymer membranes based on the adhesive behavior of poly(DOPA) and poly(dopamine)

Xi, Zhenyu; Xu, Yuan; Zhu, Liping; Wang, Yue; Zhu, Bao‐Ku

doi:10.1016/j.memsci.2008.11.037

Cited by 618 publications

(273 citation statements)

References 19 publications

Supporting

Mentioning

241

Contrasting

Unclassified

Order By: Relevance

“…Physical adsorption onto membrane surface by dipping is suitable for the formation or deposition of a functional layer that adheres to the surface of the membrane 22,24 . Kochan et al 38 reported similar results with surface modification of PES ultrafiltration membranes by polyelectrolyte using layerby-layer deposition technique to reduce the pore size (MWCO) of the membrane, consequently obtaining a better rejection performance by converting the membrane with open structure to a membrane with denser active layer.…”

Section: Effect Of Surface Coating On Membrane Surface Roughness and mentioning

confidence: 99%

“…Removal mechanism such as size exclusion, charge interaction, hydrophobic interaction/adsorption as well as fouling mechanism of membranes has been altered through various surface modification methods in earlier studies 18,19,[22][23][24][25] . Loose UF membranes have also been surface modified to enhance the selectivity by making the pore sizes smaller after modification and /or adding charged coating materials to improve selectivity by charge repulsion 18,38 .…”

Section: 4mentioning

confidence: 99%

“…Frequently reported methods of surface modification available on commercial scale include coating, blending, grafting, chemical, composite and combined methods 19,[22][23][24][25] . Surface grafting and blending are two common and most effective modifications used, which provides a more stable modification (physical and chemical stability) during the operation and cleaning process of the membrane 26 ; however, on an industrial application they are considered complicated and costly.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

Ojajuni

Holder

Cavalli

et al. 2016

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This research investigates surface coated ultrafiltration (UF) polyvinylidene fluoride (PVDF) hollow fiber membrane for the removal of organic micropollutants (OMPs) in water. Coating of PVDF membranes with Poly (1-phenylethene-1,2-diyl) -Polystyrene solution through physical adsorption was carried out under two modes, 'dipped' and 'sprayed'. The performance of the coated membrane in the rejection of model organic micropollutants, caffeine and carbamazepine spiked in deionised water (at 300 µg/L and 500 µg/L), correlated with the coating methods used. Dipped coated membrane showed a better removal of recalcitrant hydrophobic carbamazepine compared to the 'sprayed' coated membrane; while for both methods of coating, removal of caffeine was relatively insignificant. Inferably, hydrophobic interaction and size exclusion may be the major removal mechanism involved in the rejection by the coated membranes. The coating layer potentially enhanced reduction of pore size with resulting effect on membrane permeability and providing more sites for possible hydrophobic interaction.

show abstract

Section: Effect Of Surface Coating On Membrane Surface Roughness and mentioning

confidence: 99%

Section: 4mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

Ojajuni

Holder

Cavalli

et al. 2016

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…[15]. Li et al grafted PMMA polymer brush on the surface of PVDF to evolve it for lithium ion batteries [16]. Susanti et al reported an excel way for the highly uniform and ultrathin stable hydrophilic polymer coatings on the surface as well as the pores of PVDF MF membrane by coating a hydrophilic PEGDA in liquid carbon dioxide which already modified by chemical crosslinking reaction [17].…”

Section: Introductionmentioning

confidence: 99%

PVDF hydrophilicity enhancement via synthesizing brush polymer for membrane applications

2017

IJMTER

View full text Add to dashboard Cite

Abstract-Poly (vinylidene fluoride) (PVDF) has been used as a unique polymer for membrane application including water treatment and gas separation because of its outstanding properties such as high chemical resistance and good thermal stability. In this study, at first we fabricate PVDF flat sheet membrane with NIPS method by controlling the pore size and then improve its hydrophilicity property of PVDF by grafting the poly [oligo (ethylene glycol) methyl methacrylate] (POEGMA) brushes polymer synthesized on the surface of membrane. The results compared with physical modification by incorporation different percentage of poly (ethylene glycol) (PEG) as a modifier in the bulk of polymer matrix with optimization of the best amount of PEG loading. FE-SEM, AFM, CA and TGA tests were applied for characterization of the membrane.

show abstract

“…The best cell attachment was achieved with a coating of L-3,4-dihydroxyphenylalanine (L-Dopa) ( Figure 5). The same coating is used for many materials [100,101], and various cell lines (human pluripotent stem cells for example [102], HK-2, HPTC and ciPTEC). This and / or poly(ether imide) as having good haemocompatibility, and as promoting cell attachment, proliferation and/or differentiation.…”

Section:  Chemical Surface Modificationsmentioning

confidence: 99%

Development of an upscaled bioartificial kidney

Chevtchik¹

View full text Add to dashboard Cite

Printed by Gildeprint, Enschede, the Netherlands, Cover design by Natalia Chevtchik and Felix Broens Front page: confocal microscopy image of conditionnaly imrtalized proximal tubule renal epithelial cells (ciPTEC) cultured on polymeric hollow fiber membranes (HFM) with DAPI staining of the nuclei and immunostaining for the tight junction protein ZO-1. The kidneys are composed of hundreds of thousands of filtration units called nephrons (see Figure 1). In the nephron, blood initially passes through the glomerulus where small and middle-size solutes and excess fluids are removed out of the blood by convection. This glomerular filtrate is then transferred to the proximal tubules, which are responsible for reabsorbing essential components of the pre-urine but also for additional removal of a great variety of solutes and wastes from the blood stream, among which, the protein-bound toxins. More details about kidney physiology are explained in chapter 2 of this thesis. DEVELOPMENT OF AN UPSCALED BIOARTIFICIAL KIDNEY Kidney diseaseMore than 10% of the worldwide population is estimated to present a more or less severe form of kidney disease [4][5][6] Chapter 1 4 Renal replacement therapiesThe most common treatment for CKD, ESRD and AKI patients is artificial kidney or dialysis, applied for 2.2 million patients worldwide [10]. This treatment only covers a fraction of the physiological renal function -mostly that of the glomerulus in the normal kidney -and its efficiency in waste removal is incomplete [11, 12]. Indeed, only small water-soluble molecules, inferior to 40 kDa, present in free fraction in the blood, can be eliminated [13] whereas most of the big size and protein bound toxins cannot be removed. Their accumulation is strongly linked to the fatal outcome of the hemodialysed population [14][15][16].These toxins are in large part handled by the proximal tubules in the healthy kidneys [13, 17]. Besides, dialysis is removing a part of the toxin population but is not replacing the kidney endocrine and metabolic physiological functions. The need for a more complete renal replacement therapyThere is a strong need for a device, extracorporeal or implantable, which could fully replace the kidney function. Such a device could be a hybrid combination of polymeric membranes and renal proximal tubule epithelial cells (PTEC), called the bioartificial kidney (BAK). The BAK is conceived to be used in combination with a classical hemofilter [18, 19]. In this way, there is a direct similitude with the natural kidney. First, the glomerular function is replaced by the classical hemodialysis for removal of small size water-soluble molecules.Second, the glomerular filtrate, which comes out of the hemodialysis module, can be processed by the PTEC of the BAK. The principle of application of the BAK is presented in Figure 2.The first BAK prototype was presented by Aebisher et al. in 1987 [21]. Since then, several other prototypes have been proposed by the groups of Humes, Zink and Saito [18,[22][23][24][25][26][27][28][29]. The first...

show abstract

A facile method of surface modification for hydrophobic polymer membranes based on the adhesive behavior of poly(DOPA) and poly(dopamine)

Cited by 618 publications

References 19 publications

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

Rejection of Caffeine and Carbamazepine by Surface-Coated PVDF Hollow-Fiber Membrane System

PVDF hydrophilicity enhancement via synthesizing brush polymer for membrane applications

Development of an upscaled bioartificial kidney

Contact Info

Product

Resources

About