Preparation of highly asymmetric hollow fiber membranes from poly(ether imide) by a modified dry–wet phase inversion technique using a triple spinneret

2005 ◽  
Vol 262 (1-2) ◽  
pp. 69-80 ◽  
Author(s):  
W. Albrecht ◽  
K. Kneifel ◽  
Th. Weigel ◽  
R. Hilke ◽  
R. Just ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Phase Inversion ◽  
Hollow Fiber Membranes ◽  
Inversion Technique ◽  
Phase Inversion Technique ◽  
Fiber Membranes ◽  
Wet Phase Inversion

scholarly journals Study on the effect of spinning conditions on the performance of PSf/PVP ultrafiltration hollow fiber membrane

2018 ◽  
Vol 14 (3) ◽  
pp. 343-347 ◽  
Author(s):  
Sumarni Mansur ◽  
Mohd Hafiz Dzarfan Othman ◽  
Ahmad Fauzi Ismail ◽  
Muhammad Nidzhom Zainol Abidin ◽  
Noresah Said ◽  
...  
Keyword(s):  
Pore Size ◽  
Hollow Fiber ◽  
Phase Inversion ◽  
Hollow Fiber Membrane ◽  
Hollow Fibers ◽  
Hollow Fiber Membranes ◽  
Fiber Membrane ◽  
Membrane Pore ◽  
Phase Inversion Technique ◽  
Fiber Membranes

Asymmetric, porous ultrafiltration polysulfone (PSf) hollow fiber membranes were fabricated via the dry-wet phase inversion spinning technique specifically for haemodialysis membrane. The objective was to discover the suitable spinning condition for the fabrication of ultrafiltration hollow fiber membrane with desired sponge-like structure. During haemodialysis procedure, uremic toxins such as urea and creatinine range from size 10,000-55,000 Da needs to be excreted out from the blood. While, proteins such as albumin (66,000 Da) need to be retained. The physical structure or morphology of a fabricated membrane is a major concern in determining the efficiency of a dialysis membrane. Different type of membrane morphology will give a different result in term of its permeability and clearance efficiency. The phase inversion spinning technique is suitable in producing ultrafiltation (UF) membrane where the average pore size of the fabricated membrane is in the range of 0.001 – 0.1 µm. However, there is many factors need to be controlled and manipulated in the phase inversion technique. In this study, the effect of the PVP on membrane pore size and performances were analysed. The contact angle measurement was measured to determine the hydrophilicity of the fibers. The hydrophilic polymer is favorable to avoid fouling and increase its biocompatibility. Furthermore, the diameter of the hollow fibers was determined using a scanning electron microscope (SEM). The effects of different morphology of the hollow fibers on the performance of the membranes were evaluated by pure water flux and BSA rejection. Both techniques were tested using permeation flux system. Based on the results obtained, it is found that the finger-like macrovoids in PSf hollow fiber membranes were suppressed by adding 8% PVP (Mw of 360 kDa) into the spinning dope solution as the result of a drastic increase in dope viscosity. On top of that, fiber spun with 8% PVP show more porous structure which contribute to higher permeability of the membrane. The result of this study can benefit to the membrane field of research especially in membrane technology for haemodialysis application.

Structure Morphology of Polyethersulfone Hollow Fiber Membrane via Immersion Precipitation Phase Inversion Process

2012 ◽  
Vol 152-154 ◽  
pp. 574-578 ◽  
Author(s):  
Ping Lan ◽  
Wei Wang
Keyword(s):  
Hollow Fiber ◽  
Phase Inversion ◽  
Hollow Fiber Membrane ◽  
Pure Water ◽  
Water Flux ◽  
Additive Concentration ◽  
Hollow Fiber Membranes ◽  
Fiber Membrane ◽  
Fiber Membranes ◽  
And Performance

Polyethersulfone (PES) hollow fiber membranes have been widely used in many fields, such as ultrafiltration, microfiltration, reverse osmosis, liquid/liquid or liquid/solid separation, gas separation, hemodialysis, and so on. In this paper, the sheet PES hollow fiber membranes were prepared. The morphology and performance of membranes can be controlled. By studying the influence of the compositions and conditions on the morphology and performance of PES hollow fiber membrane, the relationship of morphology and performance of the membrane is acquired. The additives were used such as glycerol, BuOH and PEG. In addition, immerse phase inversion was used as membranes preparation method. The morphology of the membrane was controlled by changing kinds of additive, concentration of additive and so on. It was found that the membrane morphologies were changed by additive obviously. Porosity , pure water flux, scanning electron microscopy(SEM) were used to characterize the morphology and performance of the membranes.

Phase inversion spinning of ultrafine hollow fiber membranes through a single orifice spinneret

2012 ◽  
Vol 421-422 ◽  
pp. 8-14 ◽  
Author(s):  
Jianfeng Yao ◽  
Kun Wang ◽  
Manrui Ren ◽  
Jefferson Zhe Liu ◽  
Huanting Wang
Keyword(s):  
Hollow Fiber ◽  
Phase Inversion ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

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

On the search of rigorous thermo-kinetic model for wet phase inversion technique

2017 ◽  
Vol 538 ◽  
pp. 18-33 ◽  
Author(s):  
Milad Asgarpour Khansary ◽  
Azam Marjani ◽  
Saeed Shirazian
Keyword(s):  
Kinetic Model ◽  
Phase Inversion ◽  
Inversion Technique ◽  
Phase Inversion Technique ◽  
Wet Phase Inversion
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