scholarly journals Preparation and characterization of a novel positively charged composite hollow fiber nanofiltration membrane based on chitosan lactate

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4361-4369 ◽  
Author(s):  
Yuantao He ◽  
Jing Miao ◽  
Shunquan Chen ◽  
Rui Zhang ◽  
Ling Zhang ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Trimesoyl Chloride ◽  
Positively Charged ◽  
Chitosan Lactate

A positively charged composite hollow fiber nanofiltration (NF) membrane was prepared via interfacial polymerization by using chitosan lactate and trimesoyl chloride (TMC).

Fabrication and characterization of a novel nanofiltration membrane by the interfacial polymerization of 1,4-diaminocyclohexane (DCH) and trimesoyl chloride (TMC)

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40742-40752 ◽  
Author(s):  
Gui-E. Chen ◽  
Yan-Jun Liu ◽  
Zhen-Liang Xu ◽  
Yong-Jian Tang ◽  
Hui-Hong Huang ◽  
...  
Keyword(s):  
Thin Film ◽  
Significant Influence ◽  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fabrication And Characterization ◽  
Polyamide Membrane ◽  
Trimesoyl Chloride

A novel thin-film composite polyamide membrane for nanofiltration is prepared, and the addition of sodium N-cyclohexylsulfamate is found to have a significant influence on its performance.

Preparation and characterization of a composite nanofiltration membrane from cyclen and trimesoyl chloride prepared by interfacial polymerization

2015 ◽  
Vol 132 (33) ◽  
pp. n/a-n/a ◽  
Author(s):  
Gui-E. Chen ◽  
Yan-Jun Liu ◽  
Zhen-Liang Xu ◽  
Deng Hu ◽  
Hui-Hong Huang ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Trimesoyl Chloride

Study on Compositions in Aqueous Phase of Hollow Fiber Composite Nanofiltration Membrane

2012 ◽  
Vol 529 ◽  
pp. 569-573 ◽  
Author(s):  
Lei Wen ◽  
Wei Wang
Keyword(s):  
Phase Composition ◽  
Aqueous Phase ◽  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Fiber Composite ◽  
Water Flux ◽  
Sulfamic Acid ◽  
Nanofiltration Membrane ◽  
Trimesoyl Chloride ◽  
Polymerization Method

Hollow fiber composite nanofiltration (NF) membranes were prepared by interfacial polymerization method, with polysulfone (PSF) hollow fiber ultrafiltration membrane as base membrane, piperazine (PIP) as the aqueous phase monomer and trimesoyl chloride (TMC) as the organic phase monomer. The effects of aqueous phase composition on composite NF were discussed. The experimental results show that the optimum compositions in aqueous phase: 1wt% PIP, 0.05wt% MPDA, 1wt% TEA, 3wt% sulfamic acid. The best rejection to MgSO4 was 94.7%, and water flux was 66.1L•m-2•h-1.

scholarly journals An acid-stable positively charged polysulfonamide nanofiltration membrane prepared by interfacial polymerization of polyallylamine and 1,3-benzenedisulfonyl chloride for water treatment

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2042-2054 ◽  
Author(s):  
Hao Wang ◽  
Zhong Wei ◽  
Heyun Wang ◽  
Haoji Jiang ◽  
Yinchun Li ◽  
...  
Keyword(s):  
Water Treatment ◽  
Metal Ions ◽  
Interfacial Polymerization ◽  
Divalent Metal ◽  
Separation Performance ◽  
Nanofiltration Membrane ◽  
Divalent Metal Ions ◽  
Acid Stable ◽  
Positively Charged

Here, an acid stable PSA membrane with positively charge was prepared through the IP between macromolecular PAH and BDSC on PES substrate. In addition, the PSA membrane exhibited excellent separation performance to divalent metal ions.

scholarly journals Aquaporin-Containing Proteopolymersomes in Polyelectrolyte Multilayer Membranes

Membranes ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 103
Author(s):  
Dennis M. Reurink ◽  
Fei Du ◽  
Radosław Górecki ◽  
Hendrik D.W. Roesink ◽  
Wiebe M. de Vos
Keyword(s):  
Hollow Fiber ◽  
Negative Charge ◽  
Interfacial Polymerization ◽  
Hollow Fiber Membrane ◽  
Layer Growth ◽  
Fiber Membrane ◽  
Polyelectrolyte Multilayer ◽  
Biomimetic Membranes ◽  
Separation Behavior ◽  
Positively Charged

The field of membranes saw huge developments in the last decades with the introduction of both polyelectrolyte multilayer (PEM)-based membranes and biomimetic membranes. In this work, we combine these two promising systems and demonstrate that proteopolymersomes (PP+) with the incorporated aquaporin protein can be distributed in a controlled fashion using PEMs, even on the inner surface of a hollow fiber membrane. In this way, various proteopolymersome multilayers (PPMs) are fabricated using PP+ as the positively charged species in combination with the polyanions poly(styrene 4-sulfonate) (PSS) and poly(acrylic acid) (PAA). It is shown by reflectometry through alternately adsorbing the polyanions and PP+ that, for both PAA and PSS, a good layer growth is possible. However, when the multilayers are imaged by SEM, the PAA-based PPMs show dewetting, whereas vesicular structures can only be clearly observed in and on the PSS-based PPMs. In addition, membrane permeability decreases upon coating the PPMs to 2.6 L∙m−2∙h−1∙bar−1 for PAA/PP+ and 7.7 L∙m−2∙h−1∙bar−1 for PSS/PP+. Salt retentions show that PAA/PP+ layers are defective (salt retentions <10% and high molecular weight cut-off (MWCO)), in line with the observed dewetting behavior, while PPMs based on PSS show 80% MgSO4 retention in combination with a low MWCO. The PSS/PP+ membranes show a Donnan-exclusion behavior with moderate MgCl2 retention (50%–55%) and high Na2SO4 retention (85%–90%) indicating a high amount of negative charge present within the PPMs. The corresponding PEMs, on the other hand, are predominately positively charged with MgCl2 retention of 97%–98% and Na2SO4 retention of 57%–80%. This means that the charge inside the multilayer and, thus, its separation behavior can be changed when PP+ is used instead of a polycation. When comparing the PPM membranes to the literature, similar performances are observed with other biomimetic membranes that are not based on interfacial polymerization, but these are the only ones prepared using a desired hollow fiber geometry. Combining PEMs and biomimetic approaches can, thus, lead to relevant membranes, especially adding to the versatility of both systems.

scholarly journals A novel cellulose/chitosan composite nanofiltration membrane prepared with piperazine and trimesoyl chloride by interfacial polymerization

RSC Advances ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 1309-1318 ◽  
Author(s):  
Rengui Weng ◽  
Xin Huang ◽  
Dongqi Liao ◽  
Sheng Xu ◽  
Lei Peng ◽  
...  
Keyword(s):  
Organic Materials ◽  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Trimesoyl Chloride ◽  
Chitosan Composite

Bamboo cellulose (BC) is one of the most abundant renewable, hydrophilic, inexpensive, and biodegradable organic materials.

scholarly journals A novel positively charged composite nanofiltration membrane based on polyethyleneimine with a tunable active layer structure developed via interfacial polymerization

RSC Advances ◽  
2019 ◽  
Vol 9 (19) ◽  
pp. 10796-10806 ◽  
Author(s):  
Zhibin Jiang ◽  
Jing Miao ◽  
Yuantao He ◽  
Kai Tu ◽  
Shunquan Chen ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Active Layer ◽  
Organic Phase ◽  
Interfacial Polymerization ◽  
Layer Structure ◽  
Nanofiltration Membrane ◽  
Positively Charged

The tunable active layer structure was developed via interfacial polymerization, using polyethyleneimine as the monomer of the aqueous phase, and a mixture of isophthaloyl dichloride and tri-mesoyl chloride as the monomer of the organic phase.

Positively charged thin-film composite hollow fiber nanofiltration membrane for the removal of cationic dyes through submerged filtration

Desalination ◽  
2013 ◽  
Vol 328 ◽  
pp. 42-50 ◽  
Author(s):  
Yinping Zheng ◽  
Guohua Yao ◽  
Qibo Cheng ◽  
Sanchuan Yu ◽  
Meihong Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Hollow Fiber ◽  
Cationic Dyes ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Positively Charged

Preparation and Characterization of a Novel Organic-Inorganic Nanofiltration Membranes Prepared by Interfacial Polymerization

2011 ◽  
Vol 374-377 ◽  
pp. 1059-1063
Author(s):  
Li Mei Jin ◽  
Wen Xin Shi ◽  
Shui Li Yu ◽  
Xue Song Yi
Keyword(s):  
Salt Solution ◽  
Interfacial Polymerization ◽  
Rejection Rate ◽  
Pamam Dendrimer ◽  
Skin Layer ◽  
Separation Performance ◽  
Gravimetric Analysis ◽  
Scanning Electron Microcopy ◽  
Trimesoyl Chloride

A novel organic-inorganic nanocomposite NF membrane containing SiO2 were prepared by interfacial polymerization on polysulfone (PSF) ultrafiltration membrane with poly(amidoamine) (PAMAM) dendrimer and trimesoyl chloride (TMC) as monomers. The membranes were investigated by Thermal Gravimetric Analysis (TGA), Field Emission Scanning Electron Microcopy(FESEM) and Energy Dispersive X-ray Detector(EDX), then the separation performance of salt solution was investigated. The results indicated that the nanoparticles were well-distributed in the membranes. The addition of SiO2 in the skin layer increased thermal stability and improved roughness and hydrophility of membrane. The pure flux for PA-SiO2 increased than neat PA membrane while the rejection rate of Na2SO4 salt solution was lower than the latter.

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