Preparation, characterization, and performance evaluation of coated PES polymer materials fabricated via dry/wet phase inversion technique

2013 ◽  
Vol 131 (1) ◽  
pp. n/a-n/a ◽  
Author(s):  
KeeHong Kim ◽  
ChanHeui Hyung ◽  
Pravin G. Ingole ◽  
JongHak Kim ◽  
HyungKeun Lee
Keyword(s):  
Performance Evaluation ◽  
Phase Inversion ◽  
Polymer Materials ◽  
Inversion Technique ◽  
Phase Inversion Technique ◽  
Wet Phase Inversion ◽  
And Performance

scholarly journals Preparation and Characterization of Asymmetric Ultrafiltration Membrane for Lysozyme Separation: Effect of Polymer Concentration

2017 ◽  
Vol 11 (1) ◽  
Author(s):  
A. Nora’aini ◽  
H. Sofiah ◽  
A. Asmadi ◽  
M. Abdul Wahab
Keyword(s):  
Phase Inversion ◽  
Protein Production ◽  
Polymer Concentration ◽  
Downstream Processing ◽  
High Yield ◽  
Membrane Performance ◽  
Phase Inversion Technique ◽  
Wet Phase Inversion ◽  
And Performance

Penetrations of membrane technology in the downstream processing of protein production are now well accepted due its effectiveness and ability to generate high yield of product. This study aimed to investigate the effects of polymer concentrations on morphology and performance of ultrafiltration membranes for lysozyme separation. Three membrane solutions with different polymer concentration of Polyehtersulfone/N–Methyl pyrolidone/water with 15% w/w, 17% w/w and 19% w/w (15% [UF 15], 17% [UF 17] and 19% [UF 19]) were used to prepare asymmetric flat sheets membranes via a simple dry/wet phase inversion technique. The data obtained shows that the permeability coefficient decreased from 10.9 × 10–6 to 0.44 × 10–6m3/m2.s.bar with increasing polymer concentrations. UF 15 membrane discovers the highest flux and lysozyme transmission, consequently promoted this membrane as an optimum membrane for lysozyme separation. This study proves that the polymer concentration was greatly affected the membrane performance and structural properties consecutively, promoted an improvement of UF membrane capability for lysozyme separation.

scholarly journals Effect of Methanol Concentration on the Performance of Asymmetric Cellulose Acetate Reverse Osmosis Membranes Using Dry/Wet Phase Inversion Technique

2012 ◽  
Author(s):  
Ani Idris ◽  
Ahmad Fauzi Ismail ◽  
S. Iswandi ◽  
Simon J. Shilton
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Phase Inversion ◽  
Pure Water ◽  
Permeation Rate ◽  
Transport Parameter ◽  
Water Permeation ◽  
Inversion Technique ◽  
Phase Inversion Technique ◽  
Wet Phase Inversion

Membran asimetrik telah dihasilkan daripada larutan polimer multikomponen yang terdiri daripada selulosa asetat, aseton formamid dan metanol. Dalam kajian ini, teknik fasa balikan kering/basah telah digunakan dan kehadiran metanol dikaji. Selain itu, kajian ini juga mengemukakan isu asas yang terlibat dalam pengubahsuaian larutan tuangan kepingan rata, bagi menghasilkan larutan yang berpotensi untuk digunakan bagi penyediaan membran gentian geronggang, yang mempunyai lapisan memilih yang bebas daripada kecacatan. Pengubahsuaian komposisi larutan multikomponen telah menghasilkan membran osmosis balikan yang berbeza prestasinya. Prestasi membran ditentukan secara uji kaji oleh pemboleh ubah asas seperti fluks air tulen (PWP), kadar kebolehtelapan air garam (PR) dan kadar buangan. Daripada data tersebut, parameter sekunder seperti pemalar kebolehtelapan air tulen (A), parameter pengangkutan bahan larut (DAM /Kδ) dan pekali pemindahan jisim (k) dapat ditentukan. Parameter tersebut adalah penting dalam meramal prestasi membran osmosis balikan dan pencirian morfologi membran. Keputusan uji kaji menunjukkan bahawa kehadiran metonal dalam formulasi larutan polimer telah meningkatkan kadar buangan dan aliran fluks. Nilai (DAM/Kδ) yang lebih rendah bagi larutan rujukan menunjukkan bahawa purata saiz liang pada permukaan membran secara bandingan adalah lebih kecil. Kata kunci: Asimetrik membran; osmosis balikan; selulosa asetat; fasa balikan. Asymmetric membranes were prepared from a multicomponent dope polymer solution consisting of cellulose acetate, acetone, formamide and methanol. In this work, the dry/wet phase inversion technique is used and the presence of methanol is studied. In addition, this work also presents the fundamental issues involved in altering flat sheet casting solutions to produce solutions, potentially useful for preparing hollow fibers within, defect free selective layers. Variations in the composition of multicomponent casting solution resulted in membranes with drastically different reverse osmosis performance. The membrane performance are determined experimentally by primary parameters such as the pure water permeation rate (PWP), salt permeation rate (PR) and rejection rates. From these data, the secondary parameter such as pure water permeability constant (A), solute transport parameter (DAM/Kδ) and mass transfer coefficient (k) are determined. These parameters are important in the prediction of reverse osmosis performance and also in characterising membrane morphology. The results revealed that the presence of methanol in the dope formulation increases the percentage of salt rejection and flux flow. The relatively lower value of (DAM /Kδ) for a reference solute indicates a relatively a relatively smaller average pore size on the membrane surface. Key words: Asymmetric membrane; reverse osmosis; cellulose acetate; dry/wet phase inversion

PEEKWC Capsules Prepared by Phase Inversion Technique: A Morphological and Dimensional Study

2007 ◽  
Vol 42 (13) ◽  
pp. 2809-2827 ◽  
Author(s):  
A. Figoli ◽  
G. De Luca ◽  
E. Longavita ◽  
E. Drioli
Keyword(s):  
Phase Inversion ◽  
Inversion Technique ◽  
Phase Inversion Technique

Dual-layer hollow fiber MT-SOFC using lithium doped CGO electrolyte fabricated via phase-inversion technique

2017 ◽  
Vol 304 ◽  
pp. 113-125 ◽  
Author(s):  
Siti Munira Jamil ◽  
Mohd Hafiz Dzarfan Othman ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar ◽  
Mohamad Azuwa Mohamed ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Phase Inversion ◽  
Inversion Technique ◽  
Phase Inversion Technique

scholarly journals Fabrication and Characterization of Polycaprolactone / Nanozeolite Membrane Films via Phase Inversion Technique

2020 ◽  
Vol 894 ◽  
pp. 012004
Author(s):  
Ruth R Aquino ◽  
Marvin S Tolentino ◽  
MariaJenina S Foronda ◽  
Deseree A Mata ◽  
Keille Peter B Susbilla
Keyword(s):  
Phase Inversion ◽  
Inversion Technique ◽  
Phase Inversion Technique ◽  
Fabrication And Characterization
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