Direct generation of an ultrathin (8.5 nm) polyamide film with ultrahigh water permeance via in-situ interfacial polymerization on commercial substrate membrane

2021 ◽  
pp. 119450
Author(s):  
Jiayu Tian ◽  
Hailin Chang ◽  
Shanshan Gao ◽  
Yue Zong ◽  
Bart Van der Bruggen ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Direct Generation ◽  
Polyamide Film ◽  
Water Permeance

scholarly journals Monitoring the Interfacial Polymerization of Piperazine and Trimesoyl Chloride with Hydrophilic Interlayer or Macromolecular Additive by in-situ FT-IR Spectroscopy

2019 ◽  
Author(s):  
Xi Yang
Keyword(s):  
Ir Spectroscopy ◽  
Reaction Rate ◽  
Interfacial Polymerization ◽  
Reaction System ◽  
Reaction Rates ◽  
Water Permeation ◽  
Ft Ir ◽  
Trimesoyl Chloride ◽  
Ft Ir Spectroscopy

The interfacial polymerization (IP) of piperazine (PIP) and trimesoyl chloride (TMC) has been extensively utilized to synthesize the nanofiltration (NF) membrane. However, it is still a huge challenge to monitor the IP reaction, because of the fast reaction rate and the formed ultra-thin film. Herein, two effective strategies are applied to reduce the IP reaction rate: (1) the introduction of hydrophilic interlayers between the porous substrate and the formed polyamide layer; (2) the addition of macromolecular additives in the aqueous solution of PIP. As a result, in-situ FT-IR spectroscopy was firstly used to monitor the IP reaction of PIP/TMC reaction system, with hydrophilic interlayers or macromolecular additives. Moreover, we study the formed polyamide layer growth on the substrate, in a real-time manner. The in-situ FT-IR experimental results confirm that the IP reaction rates are effectively suppressed and the formed polyamide thickness reduces from 138±24 nm to 46±2 nm. Furthermore, the optimized NF membrane with excellent performance are consequently obtained, which include the boosted water permeation flux about 141~238 (L·m2·h/MPa) and superior salt rejection of Na2SO4 > 98.4%.

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

An ultrahighly permeable-selective nanofiltration membrane mediated by an in situ formed interlayer

2020 ◽  
Vol 8 (10) ◽  
pp. 5275-5283 ◽  
Author(s):  
Yufan Hao ◽  
Quan Li ◽  
Benqiao He ◽  
Bo Liao ◽  
Xianhui Li ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Nanofiltration Membrane

An interlayer is in situ formed to regulate the morphologies and thickness of the polyamide layer during a chitosan assisted interfacial polymerization. The resulted NF membrane exhibits an ultrahigh permeability without compromising on selectivity.

scholarly journals Nano-ZnO impregnated inorganic–polymer hybrid thinfilm nanocomposite nanofiltration membranes: an investigation of variation in structure, morphology and transport properties

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 34134-34151 ◽  
Author(s):  
Avishek Pal ◽  
T. K. Dey ◽  
Anshu Singhal ◽  
R. C. Bindal ◽  
P. K. Tewari
Keyword(s):  
Transport Properties ◽  
Organic Phase ◽  
Interfacial Polymerization ◽  
Inorganic Polymer ◽  
Nanofiltration Membranes ◽  
Nano Zno ◽  
Polymer Hybrid ◽  
Structure Morphology ◽  
Trimesoyl Chloride

TFN-NF membranes prepared byin situinterfacial polymerization of branched polyethyleneimine and trimesoyl chloride, with simultaneous impregnation of as-synthesized hexagonal wurtzite nano-ZnO either through aqueous or organic phase.

Nylon 610 and carbon nanotube composite by in situ interfacial polymerization

Polymer ◽  
2006 ◽  
Vol 47 (11) ◽  
pp. 3961-3966 ◽  
Author(s):  
Minsung Kang ◽  
Seung Jun Myung ◽  
Hyoung-Joon Jin
Keyword(s):  
Carbon Nanotube ◽  
Interfacial Polymerization ◽  
Carbon Nanotube Composite
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