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

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 59 ◽  
Author(s):  
Nikos D. Koromilas ◽  
Charalampos Anastasopoulos ◽  
Evdokia K. Oikonomou ◽  
Joannis K. Kallitsis
Keyword(s):  
Phase Separation ◽  
Polymeric Membranes ◽  
Membrane Matrix ◽  
Polyether Sulfone ◽  
Sulfonated Polymers ◽  
Properties Characterization

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.

scholarly journals An Experimental Investigation: Effect of Phase Inversion Methods on Membrane Structure and Its Performance on PEG Filtration

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Masooma Irfan ◽  
Hatijah Basri ◽  
M. Irfan
Keyword(s):  
Phase Separation ◽  
Phase Inversion ◽  
Multiwall Carbon Nanotubes ◽  
Polymeric Membranes ◽  
Inversion Method ◽  
Inversion Process ◽  
Membrane Morphology ◽  
And Performance ◽  
Phase Inversion Method ◽  
Multiwall Carbon

In this work, the effect of different phase inversion process on membrane morphology and performance was studied. Polyethersulfone (PES) based polymeric membranes was fabricated containing polyvinylpyrrolidone (PVP) and carboxylic functionalized multiwall carbon nanotubes (MWCNT) as additives and polyethylene glycol (PEG) having a molecular weight 1K, 10K and 35K (Dalton) were used as a model solution for observing the rejection/filteration ability of fabricated membranes. Non-solvent induce phase separation (NIP) and dry-wet phase separation (DWP) method was adopted for membrane synthesis. The FTIR spectra showed that PVP/MWCNT was effectively blended with PES polymer and different phase inversion method led to different internal morphologies of membranes as confirmed by FESEM images. The PEG rejection results suggested that membranes formed by DWP method had approximately double rejection ability than membranes formed by NIP process.

Analysis of the Thermal Behavior of Polypropylene–Camphor Mixtures for Understanding the Pathways to Polymeric Membranes via Thermally Induced Phase Separation

2019 ◽  
Vol 123 (49) ◽  
pp. 10533-10546 ◽  
Author(s):  
Konstantin V. Pochivalov ◽  
Andrey V. Basko ◽  
Tatiana N. Lebedeva ◽  
Anna N. Ilyasova ◽  
Roman Yu. Golovanov ◽  
...  
Keyword(s):  
Phase Separation ◽  
Thermal Behavior ◽  
Polymeric Membranes ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced

A Review on Polymeric Membranes and Hydrogels Prepared by Vapor-Induced Phase Separation Process

2013 ◽  
Vol 53 (4) ◽  
pp. 568-626 ◽  
Author(s):  
Antoine Venault ◽  
Yung Chang ◽  
Da-Ming Wang ◽  
Denis Bouyer
Keyword(s):  
Phase Separation ◽  
Separation Process ◽  
Polymeric Membranes ◽  
Phase Separation Process

Synthesis, characterization, and CO2 separation performance of polyether sulfone/[EMIM][Tf2N] ionic liquid-polymeric membranes (ILPMs)

2017 ◽  
Vol 54 ◽  
pp. 98-106 ◽  
Author(s):  
H.A. Mannan ◽  
D.F. Mohshim ◽  
H. Mukhtar ◽  
T. Murugesan ◽  
Z. Man ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymeric Membranes ◽  
Co2 Separation ◽  
Separation Performance ◽  
Polyether Sulfone

scholarly journals Polyether Sulfone-Based Epoxy Toughening: From Micro- to Nano-Phase Separation via PES End-Chain Modification and Process Engineering

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1960 ◽  
Author(s):  
Yann Rosetti ◽  
Pierre Alcouffe ◽  
Jean-Pierre Pascault ◽  
Jean-François Gérard ◽  
Frédéric Lortie
Keyword(s):  
Phase Separation ◽  
High Performance ◽  
Process Engineering ◽  
Aromatic Diamine ◽  
Curing Conditions ◽  
Epoxy Network ◽  
Nano Scale ◽  
Polyether Sulfone ◽  
Thermosetting Epoxy

The toughness of a high-performance thermosetting epoxy network can be greatly improved by generating polyether sulfone−based macro- to nano-scale morphologies. Two polyethersulfones (PES) which only differ by their chain-end nature have been successively investigated as potential tougheners of a high-Tg thermoset matrix based on a mixture of trifunctional and difunctional aromatic epoxies and an aromatic diamine. For a given PES content, morphologies and toughness of the resulting matrices have been tuned by changing curing conditions and put into perspective with PES chain-end nature.

scholarly journals A computational study of phase separation in polymer solutions under a concentration gradient

2021 ◽  
Author(s):  
Baitao Jiang
Keyword(s):  
Phase Separation ◽  
Polymer Solution ◽  
Spinodal Decomposition ◽  
Concentration Gradient ◽  
Computational Study ◽  
Polymeric Materials ◽  
Polymeric Membranes ◽  
Separation Processes ◽  
Initial Concentration ◽  
Linear Concentration

Anisotropic porous polymeric materials fabricated from the phase separation method via spinodal decomposition are used in various practical engineering applications. Examples include anisotropic porous polymeric membranes for separation processes and holographic polymer dispersed liquid crystal films for electro-optical devices. We have studied numerically the formation of anisotropic porous polymeric materials by imposing an initial linear concentration gradient across a model polymer solution. The mathematical model is composed of the non-linear Cahn-Hilliard theory to describe spinodal decomposition dynamics, the Flory-Huggins theory for polymer solution thermodynamics, and the slow mode theory combined with the Rouse law for polymer diffusion. The computer simulations include uniform (no gradient) and non-uniform (with an initial concentration gradient) cases. For the non-uniform cases, the initial concentration gradient is placed at three different regions of polymer sample for the purpose of comparison. All the simulation results are in good agreement with published experimental observations which are reported from the applications of porous polymeric membranes. The structure development shows that an anisotropic porous morphology forms when an initial linear concentration gradient is applied to the model polymer solution.

scholarly journals A computational study of phase separation in polymer solutions under a concentration gradient

2021 ◽  
Author(s):  
Baitao Jiang
Keyword(s):  
Phase Separation ◽  
Polymer Solution ◽  
Spinodal Decomposition ◽  
Concentration Gradient ◽  
Computational Study ◽  
Polymeric Materials ◽  
Polymeric Membranes ◽  
Separation Processes ◽  
Initial Concentration ◽  
Linear Concentration

Anisotropic porous polymeric materials fabricated from the phase separation method via spinodal decomposition are used in various practical engineering applications. Examples include anisotropic porous polymeric membranes for separation processes and holographic polymer dispersed liquid crystal films for electro-optical devices. We have studied numerically the formation of anisotropic porous polymeric materials by imposing an initial linear concentration gradient across a model polymer solution. The mathematical model is composed of the non-linear Cahn-Hilliard theory to describe spinodal decomposition dynamics, the Flory-Huggins theory for polymer solution thermodynamics, and the slow mode theory combined with the Rouse law for polymer diffusion. The computer simulations include uniform (no gradient) and non-uniform (with an initial concentration gradient) cases. For the non-uniform cases, the initial concentration gradient is placed at three different regions of polymer sample for the purpose of comparison. All the simulation results are in good agreement with published experimental observations which are reported from the applications of porous polymeric membranes. The structure development shows that an anisotropic porous morphology forms when an initial linear concentration gradient is applied to the model polymer solution.

Formation of microporous polymeric membranes via thermally induced phase separation: A review

2016 ◽  
Vol 10 (1) ◽  
pp. 57-75 ◽  
Author(s):  
Min Liu ◽  
Shenghui Liu ◽  
Zhenliang Xu ◽  
Yongming Wei ◽  
Hu Yang
Keyword(s):  
Phase Separation ◽  
Polymeric Membranes ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced

scholarly journals A Review on Porous Polymeric Membrane Preparation. Part II: Production Techniques with Polyethylene, Polydimethylsiloxane, Polypropylene, Polyimide, and Polytetrafluoroethylene

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1310 ◽  
Author(s):  
Tan ◽  
Rodrigue
Keyword(s):  
Phase Separation ◽  
Melt Spinning ◽  
Low Cost ◽  
Three Dimensional ◽  
Solvent System ◽  
Processing Parameters ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Ambient Conditions ◽  
Thermally Induced

The development of porous polymeric membranes is an important area of application in separation technology. This article summarizes the development of porous polymers from the perspectives of materials and methods for membrane production. Polymers such as polyethylene, polydimethylsiloxane, polypropylene, polyimide, and polytetrafluoroethylene are reviewed due to their outstanding thermal stability, chemical resistance, mechanical strength, and low cost. Six different methods for membrane fabrication are critically reviewed, including thermally induced phase separation, melt-spinning and cold-stretching, phase separation micromolding, imprinting/soft molding, manual punching, and three-dimensional printing. Each method is described in details related to the strategy used to produce the porous polymeric membranes with a specific morphology and separation performances. The key factors associated with each method are presented, including solvent/non-solvent system type and composition, polymer solution composition and concentration, processing parameters, and ambient conditions. Current challenges are also described, leading to future development and innovation to improve these membranes in terms of materials, fabrication equipment, and possible modifications.

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