scholarly journals Thin film composite polyelectrolyte multilayer nanofiltration membrane fabricated using spin assisted layer by layer assembly: Application of solution diffusion film model

2020 ◽  
Vol 5 (1) ◽  
pp. 10-15
Author(s):  
Ahmad Alghamdi ◽  
Farid Fadhillah
Keyword(s):  
Thin Film ◽  
Operating Conditions ◽  
Layer By Layer ◽  
Polyelectrolyte Multilayer ◽  
Film Composite ◽  
Film Model ◽  
Membrane Performance ◽  
Thin Film Composite ◽  
Layer By Layer Assembly ◽  
Layer Assembly

Thin Film Composite (TFC) Polyelectrolyte Multilayer (PEM) Nanofiltration (NF) membrane consisting of multilayer of Poly(diallyl dimethyl ammonium chloride) (PDAC) and Poly(sodium 4-styrenesulfonate) (PSS) deposited on  polyethersulfone (PES) support  was prepared using spin-assisted layer by layer assembly (SA-LbL). This work is an effort to discover new material having better characteristics and performance than commercial polyamide (PA) NF membrane. Two main operating conditions namely temperature and salt concentration were investigated and the effect of both on membrane performance was studied. Solution-diffusion Film Model (SDFM) membrane employing two fitting parameters i.e. membrane salt permeability (PS) and stagnant layer salt permeability PS(d), was used to explain membrane transport across the membrane. The result showed an good agreement between experimental and observed rejection rate suggests PEM membrane behaves similar to typical solution diffusion-type  composite membrane and SDFM can be used to predict the membrane performance and behavior.

Effects of the polymerization and pervaporation operating conditions on the dehydration performance of interfacially polymerized thin-film composite membranes

2009 ◽  
Vol 114 (3) ◽  
pp. 1511-1522 ◽  
Author(s):  
Shu-Hsien Huang ◽  
George J. Jiang ◽  
Der-Jang Liaw ◽  
Chi-Lan Li ◽  
Chien-Chieh Hu ◽  
...  
Keyword(s):  
Thin Film ◽  
Composite Membranes ◽  
Operating Conditions ◽  
Film Composite ◽  
Thin Film Composite

Layer-by-layer assembly of thin film oxygen barrier

2008 ◽  
Vol 516 (15) ◽  
pp. 4819-4825 ◽  
Author(s):  
Woo-Sik Jang ◽  
Ian Rawson ◽  
Jaime C. Grunlan
Keyword(s):  
Thin Film ◽  
Oxygen Barrier ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly

scholarly journals Zwitterion Co-Polymer PEI-SBMA Nanofiltration Membrane Modified by Fast Second Interfacial Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 269 ◽  
Author(s):  
Yu-Hsuan Chiao ◽  
Tanmoy Patra ◽  
Micah Belle Marie Yap Ang ◽  
Shu-Ting Chen ◽  
Jorge Almodovar ◽  
...  
Keyword(s):  
Thin Film ◽  
Wastewater Treatment ◽  
Large Scale ◽  
Interfacial Polymerization ◽  
Antibacterial Properties ◽  
Operating Conditions ◽  
Nanofiltration Membrane ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

Nanofiltration membranes have evolved as a promising solution to tackle the clean water scarcity and wastewater treatment processes with their low energy requirement and environment friendly operating conditions. Thin film composite nanofiltration membranes with high permeability, and excellent antifouling and antibacterial properties are important component for wastewater treatment and clean drinking water production units. In the scope of this study, thin film composite nanofiltration membranes were fabricated using polyacrylonitrile (PAN) support and fast second interfacial polymerization modification methods by grafting polyethylene amine and zwitterionic sulfobutane methacrylate moieties. Chemical and physical alteration in structure of the membranes were characterized using methods like ATR-FTIR spectroscopy, XPS analysis, FESEM and AFM imaging. The effects of second interfacial polymerization to incorporate polyamide layer and ‘ion pair’ characteristics, in terms of water contact angle and surface charge analysis was investigated in correlation with nanofiltration performance. Furthermore, the membrane characteristics in terms of antifouling properties were evaluated using model protein foulants like bovine serum albumin and lysozyme. Antibacterial properties of the modified membranes were investigated using E. coli as model biofoulant. Overall, the effect of second interfacial polymerization without affecting the selectivity layer of nanofiltration membrane for their potential large-scale application was investigated in detail.

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