Effect of Pluronic F127 on porous and dense membrane structure formation via non-solvent induced and evaporation induced phase separation

Plisko, Tatiana; Penkova, Anastasia V.; Burts, Katsiaryna S.; Bildyukevich, A. V.; Dmitrenko, Mariia; Melnikova, G. B.; Atta, R.R.; Mazur, Anton S.; Золотарев, А. А.; Missyul, Alexander

doi:10.1016/j.memsci.2019.03.028

Cited by 58 publications

(33 citation statements)

References 49 publications

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“…An effective strategy for suppression of membrane fouling is to minimize attractive interactions between the membrane surface and components of the feed by chemical modification of the membrane surface which can be implemented by increasing membrane surface charge to promote electrostatic repulsion and hydrophilization to increase water-surface interaction [9,10]. The approaches utilized for the design of antifouling membranes involve (1) membrane polymer modification (pre-modification) [11], (2) blending of the membrane polymer with a modifying agent (additive) [12][13][14] and (3) surface modification after membrane preparation (post-modification) [15]. Grafting [5,7,[15][16][17][18][19][20] and coating [21,22] are the most important and frequently utilized membrane surface modification methods.…”

Section: Introductionmentioning

confidence: 99%

One-Step Preparation of Antifouling Polysulfone Ultrafiltration Membranes via Modification by a Cationic Polyelectrolyte Based on Polyacrylamide

et al. 2020

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A novel method for one-step preparation of antifouling ultrafiltration membranes via a non-solvent induced phase separation (NIPS) technique is proposed. It involves using aqueous 0.05–0.3 wt.% solutions of cationic polyelectrolyte based on a copolymer of acrylamide and 2-acryloxyethyltrimethylammonium chloride (Praestol 859) as a coagulant in NIPS. A systematic study of the effect of the cationic polyelectrolyte addition to the coagulant on the structure, performance and antifouling stability of polysulfone membranes was carried out. The methods for membrane characterization involved scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), contact angle and zeta-potential measurements and evaluation of the permeability, rejection and antifouling performance in human serum albumin solution and surface water ultrafiltration. It was revealed that in the presence of cationic polyelectrolyte in the coagulation bath, its concentration has a major influence on the rate of “solvent–non-solvent” exchange and thus also on the rate of phase separation which significantly affects membrane structure. The immobilization of cationic polyelectrolyte macromolecules into the selective layer was confirmed by FTIR spectroscopy. It was revealed that polyelectrolyte macromolecules predominately immobilize on the surface of the selective layer and not on the bottom layer. Membrane modification was found to improve the hydrophilicity of the selective layer, to increase surface roughness and to change zeta-potential which yields the substantial improvement of membrane antifouling stability toward natural organic matter and human serum albumin.

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Section: Introductionmentioning

confidence: 99%

One-Step Preparation of Antifouling Polysulfone Ultrafiltration Membranes via Modification by a Cationic Polyelectrolyte Based on Polyacrylamide

et al. 2020

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“…The macrovoids cause reduced resistance during the transfer of components through the membrane, resulting in increased permeation flux in the SA/PAN membrane ( Table 2 ). It is also worth noting that the cross-sectional structure of all substrates was uneven, which is attributed to the viscosity of the casting polymer solution and the preparation phase inversion method [ 61 , 62 ]. The UPM substrate had a compact skin top layer, where the thickest transition from a dense structure with small pores (a top layer of the substrate, on which dense SA layer was deposited) to a porous structure with large pores in the cross-section, was observed.…”

Section: Resultsmentioning

confidence: 99%

“…The permeability showed the following increasing trend: UPM < RC < PAN. The highest water permeability of the PAN substrate was attributed to increased porosity and surface roughness, the largest pore size of the skin top layer, and the hydrophilicity of the material [ 61 ]. Thus, the PAN substrate significantly improved transport properties of the developed supported membrane with a thin selective layer based on SA.…”

Section: Resultsmentioning

confidence: 99%

Modification Approaches to Enhance Dehydration Properties of Sodium Alginate-Based Pervaporation Membranes

et al. 2021

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Transport characteristics of sodium alginate (SA) membranes cross-linked with CaCl2 and modified with fullerenol and fullerene derivative with L-arginine for pervaporation dehydration were improved applying various approaches, including the selection of a porous substrate for the creation of a thin selective SA-based layer, and the deposition of nano-sized polyelectrolyte (PEL) layers through the use of a layer-by-layer (Lbl) method. The impacts of commercial porous substrates made of polyacrylonitrile (PAN), regenerated cellulose, and aromatic polysulfone amide were investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), standard porosimetry method, and water filtration. The effects of PEL combinations (such as poly(sodium 4-styrene sulfonate) (PSS)/SA, PSS/chitosan, PSS/polyacrylic acid, PSS/poly(allylamine hydrochloride)) and the number of PEL bilayers deposited with the Lbl technique on the properties of the SA and SA/fullerene derivative membranes were studied by SEM, AFM, and contact angle measurements. The best characteristics were exhibited by a cross-linked PAN-supported SA/fullerenol (5%) membrane with five PSS/SA bilayers: permeation flux of 0.68–1.38 kg/(m2h), 0.18–1.55 kg/(m2h), and 0.50–1.15 kg/(m2h), and over 99.7, 99.0, and 89.0 wt.% water in the permeate for the pervaporation dehydration of isopropanol (12–70 wt.% water), ethanol (4–70 wt.% water), and tetrahydrofuran (5.7–70 wt.% water), respectively. It was demonstrated that the mutual application of bulk and surface modifications essentially improved the membrane’s characteristics in pervaporation dehydration.

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“…This approach promotes the formation of larger pore sizes and higher porosity. Pore precursors are ultimately removed from the scaffold by an appropriate solvent (porogen-leaching) [ 71 , 97 , 117 , 118 , 125 , 126 , 127 ]. Another similar method is solvent-casting particulate leaching (SCPL).…”

Section: Scaffold For Articular Cartilage Repair: Requirements Mamentioning

confidence: 99%

Review of Synthetic and Hybrid Scaffolds in Cartilage Tissue Engineering

2020

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Cartilage tissue is under extensive investigation in tissue engineering and regenerative medicine studies because of its limited regenerative potential. Currently, many scaffolds are undergoing scientific and clinical research. A key for appropriate scaffolding is the assurance of a temporary cellular environment that allows the cells to function as in native tissue. These scaffolds should meet the relevant requirements, including appropriate architecture and physicochemical and biological properties. This is necessary for proper cell growth, which is associated with the adequate regeneration of cartilage. This paper presents a review of the development of scaffolds from synthetic polymers and hybrid materials employed for the engineering of cartilage tissue and regenerative medicine. Initially, general information on articular cartilage and an overview of the clinical strategies for the treatment of cartilage defects are presented. Then, the requirements for scaffolds in regenerative medicine, materials intended for membranes, and methods for obtaining them are briefly described. We also describe the hybrid materials that combine the advantages of both synthetic and natural polymers, which provide better properties for the scaffold. The last part of the article is focused on scaffolds in cartilage tissue engineering that have been confirmed by undergoing preclinical and clinical tests.

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Effect of Pluronic F127 on porous and dense membrane structure formation via non-solvent induced and evaporation induced phase separation

Cited by 58 publications

References 49 publications

One-Step Preparation of Antifouling Polysulfone Ultrafiltration Membranes via Modification by a Cationic Polyelectrolyte Based on Polyacrylamide

One-Step Preparation of Antifouling Polysulfone Ultrafiltration Membranes via Modification by a Cationic Polyelectrolyte Based on Polyacrylamide

Modification Approaches to Enhance Dehydration Properties of Sodium Alginate-Based Pervaporation Membranes

Review of Synthetic and Hybrid Scaffolds in Cartilage Tissue Engineering

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