Layer-by-layer assembly of nanocomposite interlayers on a kaolin substrate for enhancing membrane performance of Pb(II) and Cd(II) removal

2022 ◽  
pp. 153149
Author(s):  
Wei Zhou ◽  
Pute Wu ◽  
Lin Zhang ◽  
Shengyu Yao ◽  
Delan Zhu ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Membrane Performance ◽  
Layer By Layer Assembly ◽  
Layer Assembly

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.

Complex formation of modified chitosan and carboxymethyl cellulose and its effect on paper properties

TAPPI Journal ◽  
2009 ◽  
Vol 8 (6) ◽  
pp. 29-35 ◽  
Author(s):  
PEDRAM FATEHI ◽  
LIYING QIAN ◽  
RATTANA KITITERAKUN ◽  
THIRASAK RIRKSOMBOON ◽  
HUINING XIAO
Keyword(s):  
Carboxymethyl Cellulose ◽  
Polymer System ◽  
Layer By Layer ◽  
Paper Strength ◽  
Anionic Polymer ◽  
Paper Properties ◽  
Modified Chitosan ◽  
Layer By Layer Assembly ◽  
Polyelectrolyte Titration ◽  
Layer Assembly

The application of an oppositely charged dual polymer system is a promising approach to enhance paper strength. In this work, modified chitosan (MCN), a cationic polymer, and carboxymethyl cellulose (CMC), an anionic polymer, were used sequentially to improve paper strength. The adsorption of MCN on cellulose fibers was analyzed via polyelectrolyte titration. The formation of MCN/CMC complex in water and the deposition of this complex on silicon wafers were investigated by means of atomic force microscope and quasi-elastic light scattering techniques. The results showed that paper strength was enhanced slightly with a layer-by-layer assembly of the polymers. However, if the washing stage, which was required for layer-by-layer assembly, was eliminated, the MCN/CMC complex was deposited on fibers more efficiently, and the paper strength was improved more significantly. The significant improvement was attributed to the extra development of fiber bonding, confirmed further by scanning electron microscope observation of the bonding area of fibers treated with or without washing. However, the brightness of papers was somewhat decreased by the deposition of the complex on fibers. Higher paper strength also was achieved using rapid drying rather than air drying.

Stabilization of starch-based microgel-lysozyme complexes using a layer-by-layer assembly technique

2017 ◽  
Vol 214 ◽  
pp. 213-217 ◽  
Author(s):  
Bao Zhang ◽  
Yi Pan ◽  
Hanqing Chen ◽  
Tengfei Liu ◽  
Han Tao ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Assembly Technique ◽  
Layer Assembly

Layer-by-layer assembly of hemoglobin and gold nanoparticles for enhancing the ability of oxygen carrying

2016 ◽  
Vol 363 ◽  
pp. 566-571 ◽  
Author(s):  
Lijun Sun ◽  
Xiaojun Liu ◽  
Qiaoling Sun ◽  
Meng Cai ◽  
Jiajing Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly

scholarly journals Single‐Cell Nanoencapsulation of Saccharomyces cerevisiae by Cytocompatible Layer‐by‐Layer Assembly of Eggshell Membrane Hydrolysate and Tannic Acid

2021 ◽  
Vol 1 (1) ◽  
pp. 2170013
Author(s):  
Sang Yeong Han ◽  
Hojae Lee ◽  
Duc Tai Nguyen ◽  
Gyeongwon Yun ◽  
Seulbi Kim ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Single Cell ◽  
Tannic Acid ◽  
Eggshell Membrane ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly
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