Effect of Cellulose Acetate Phthalate (CAP) on Characteristics and Morphology of Polysulfone/Cellulose Acetate Phthalate (PSf/CAP) Blend Membranes

2014 ◽  
Vol 493 ◽  
pp. 640-644 ◽  
Author(s):  
Asmadi Ali ◽  
Rosli Mohd Yunus ◽  
Mohamad Awang ◽  
Anwar Johari ◽  
Ramli Mat
Keyword(s):  
Cellulose Acetate ◽  
Phase Inversion ◽  
Membrane Properties ◽  
Inversion Method ◽  
Hydrophilic Polymer ◽  
Cellulose Acetate Phthalate ◽  
Hydrophobic Membrane ◽  
Blend Membranes ◽  
And Performance ◽  
Uf Membranes

Polysulfone (PSf) membrane is catogorized as hydrophobic membrane that easily fouled during membrane operation process. The presence of second hydrophilic polymer which added into membrane casting solutions plays a crucial role in adjusting the membrane properties. This hydrophilic polymer was employed in hydrophobic polymer membranes in order to improve hydrophilicity and performance as well as formed antifouling ultrafiltration (UF) membranes. In this study, a hydrophilic polymer, cellulose acetate phthalate (CAP) was added into polysulfone (PSf) membrane casting solutions by blending technique to produce PSf/CAP blend membranes. Flat sheet asymmetric PSf/CAP blend membranes were prepared by wet phase inversion method. The results revealed that an increase in CAP increased the hydrophilicity properties of PSf/CAP blend membranes compared to pure PSf membrane. The significant changes in size and numbers of microvoids and macrovoids in the morphological structures of PSf/CAP blend membranes were due to CAP promote the instantaneous liquid-liquid demixing during phase inversion process.

The Effects of Evaporation Time on Morphological Structure of Polysulfone/Cellulose Acetate Phthalate/Polyvinylpyrrolidone (PSf/CAP/PVP) Blend Membranes

2014 ◽  
Vol 695 ◽  
pp. 77-80 ◽  
Author(s):  
Asmadi Ali ◽  
Rosli Mohd Yunus ◽  
Mohamad Awang ◽  
Ramli Mat
Keyword(s):  
Cellulose Acetate ◽  
Morphological Structure ◽  
Cellulose Acetate Phthalate ◽  
Evaporation Time ◽  
Membrane Morphology ◽  
Membrane Fabrication ◽  
Time Period ◽  
Blend Membranes ◽  
Fabrication Parameter ◽  
And Performance

Evaporation time is one of the important membrane fabrication parameter that can be manipulated in order to produce the desired membrane morphology in ultrafiltration (UF) separation process. The morphology of UF membrane has a significant effect on structural properties and performance of UF membrane. In this study, flat sheet asymmetric polysulfone/cellulose acetate phthalate/polyvinylpyrrolidone (PSf/CAP/PVP) blend membranes were prepared at different evaporation time in the range of 0 to 20 s to investigate its effect on the morphological structures of the blend membranes. The morphological structure of these blend membranes were characterized by using Scanning Electron Microscopy (SEM). The results showed that in the absence of evaporation time, the morphology of blend membrane consits of open finger-like structure and microvoids. Introduction of evaporation time period between 5 to 10 s, produced spongy blend membranes with less finger-like structure. Further increment of evaporation time between 15 to 20s, formed incomplete dense structure with small microvoids PSf/CAP/PVP blend membranes.

scholarly journals WASTEWATER TREATMENT USING A MODIFIED CELLULOSE ACETATE MEMBRANE

2021 ◽  
Vol 55 (5-6) ◽  
pp. 697-704
Author(s):  
HANANE ABURIDEH ◽  
ZAHIA TIGRINE ◽  
DJAMILA ZIOUI ◽  
SARAH HOUT ◽  
DJILALI TASSALIT ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Cellulose Acetate ◽  
Phase Inversion ◽  
Morphological Structure ◽  
Polymeric Membranes ◽  
Inversion Method ◽  
Cellulose Acetate Membrane ◽  
And Performance ◽  
Phase Inversion Method ◽  
Modified Cellulose

The main objective of this work has been to study the performance of membranes developed for treating purified wastewater. Polymeric membranes have been developed from solutions containing cellulose acetate (AC) and polysulfone (PSF), using N,N-dimethylformamide (DMF) as solvent and polyethylene glycol (PEG) as additive. The phase inversion method was chosen as a technique for producing the membrane films. The incorporation of PEG allowed us to study the effect of the additive on the morphological structure, and to predict the performance of the membranes formed. Examining the flux, permeability and selectivity of the membranes allowed studying the efficiency and performance of each membrane. The application results achieved in wastewater treatment at Chenoua/TIPAZA station were very satisfactory and in accordance with the standards required by WHO. The optimal performance, in terms of permeability and selectivity, was obtained for the MC membrane with the composition: PSF/PEG/AC of 25/12/63.

Biodegradable blend membranes of poly (butylene succinate)/cellulose acetate/dextran: Preparation, characterization and performance

2017 ◽  
Vol 173 ◽  
pp. 497-507 ◽  
Author(s):  
Ali Hoseinzadeh Bahremand ◽  
Seyed Mahmoud Mousavi ◽  
Ali Ahmadpour ◽  
Mostafa Taherian
Keyword(s):  
Cellulose Acetate ◽  
Butylene Succinate ◽  
Blend Membranes ◽  
And Performance

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.

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