Ultrathin Film Composite Membranes Fabricated by Novel In Situ Free Interfacial Polymerization for Desalination

2020 ◽  
Vol 12 (22) ◽  
pp. 25304-25315 ◽  
Author(s):  
Chi Jiang ◽  
Liping Zhang ◽  
Peng Li ◽  
Haixiang Sun ◽  
Yingfei Hou ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Ultrathin Film ◽  
Film Composite

scholarly journals Designing ultrathin film composite membranes: the impact of a gutter layer

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Moon Kattula ◽  
Koushik Ponnuru ◽  
Lingxiang Zhu ◽  
Weiguang Jia ◽  
Haiqing Lin ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Ultrathin Film ◽  
Film Composite ◽  
The Impact

Electrochemical synthesis of ultrathin film composite membranes

1992 ◽  
Vol 65 (1-2) ◽  
pp. 113-128 ◽  
Author(s):  
Chao Liu ◽  
Wen-Janq Chen ◽  
Charles R. Martin
Keyword(s):  
Electrochemical Synthesis ◽  
Composite Membranes ◽  
Ultrathin Film ◽  
Film Composite

scholarly journals An In Situ Incorporation of Acrylic Acid and ZnO Nanoparticles into Polyamide Thin Film Composite Membranes for Their Effect on Membrane pH Responsive Behavior

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 910
Author(s):  
Kgolofelo I. Malatjie ◽  
Bhekani S. Mbuli ◽  
Richard M. Moutloali ◽  
Catherine J. Ngila
Keyword(s):  
Thin Film ◽  
Acrylic Acid ◽  
Water Permeability ◽  
Zno Nanoparticles ◽  
Composite Membranes ◽  
Ph Responsive ◽  
Film Composite ◽  
Water Permeation ◽  
Thin Film Composite

This paper focuses on an in situ interfacial polymerization modification of polyamide thin film composite membranes with acrylic acid (AA) and zinc oxide (ZnO) nanoparticles. Consequent to this modification, the modified polyamide thin film composite (PA–TFC) membranes exhibited enhanced water permeability and Pb (II) heavy metal rejection. For example, the 0.50:1.50% ZnO/AA modified membranes showed water permeability of 29.85 ± 0.06 L·m−2·h−1·kPa−1 (pH 3), 4.16 ± 0.39 L·m−2·h−1·kPa−1 (pH 7), and 2.80 ± 0.21 L·m−2·h−1·kPa−1 1 (pH 11). This demonstrated enhanced pH responsive properties, and improved water permeability properties against unmodified membranes (2.29 ± 0.59 L·m−2·h−1·kPa−1, 1.79 ± 0.27 L·m−2·h−1·kPa−1, and 0.90 ± 0.21 L·m−2·h−1·kPa−1, respectively). Furthermore, the rejection of Pb (II) ions by the modified PA–TFC membranes was found to be 16.11 ± 0.12% (pH 3), 30.58 ± 0.33% (pH 7), and 96.67 ± 0.09% (pH 11). Additionally, the membranes modified with AA and ZnO/AA demonstrated a significant pH responsiveness compared to membranes modified with only ZnO nanoparticles and unmodified membranes. As such, this demonstrated the swelling behavior due to the inherent “gate effect” of the modified membranes. This was illustrated by the rejection and water permeation behavior, hydrophilic properties, and ion exchange capacity of the modified membranes. The pH responsiveness for the modified membranes was due to the –COOH and –OH functional groups introduced by the AA hydrogel and ZnO nanoparticles.

Highly selective thin film composite hollow fiber membranes for mixed vapor/gas separation

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78950-78957 ◽  
Author(s):  
Pravin G. Ingole ◽  
Won Kil Choi ◽  
Il-Hyun Baek ◽  
Hyung Keun Lee
Keyword(s):  
Thin Film ◽  
Gas Separation ◽  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Hollow Fiber Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fiber Membranes ◽  
Polymerization Method

In the present study, thin film composite membranes have been prepared using an interfacial polymerization method.

Vapour phase interfacial polymerization: a method to synthesize thin film composite membranes without using organic solvents

2021 ◽  
Author(s):  
Lorena Paseta ◽  
Carlos Echaide-Gorriz ◽  
Carlos Téllez Ariso ◽  
Joaquin Coronas
Keyword(s):  
Thin Film ◽  
Reverse Osmosis ◽  
Organic Solvents ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Vapour Phase ◽  
Acyl Chloride ◽  
Film Composite ◽  
Thin Film Composite

Thin film composite membranes (TFC) of polyamide (PA) prepared by interfacial polymerization (IP) between a diamine and an acyl chloride are those applied to industrial nanofiltration and reverse osmosis. Water,...

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