Relationship between Polyelectrolyte Bulk Complexation and Kinetics of Their Layer-by-Layer Assembly

2015 ◽  
Vol 48 (2) ◽  
pp. 400-409 ◽  
Author(s):  
Ali Salehi ◽  
Priyanka S. Desai ◽  
Jingyi Li ◽  
Caleb A. Steele ◽  
Ronald G. Larson
Keyword(s):  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Kinetics Of ◽  
Layer Assembly

Polymer Complexation by Hydrogen Bonding at the Interface

2014 ◽  
Vol 67 (1) ◽  
pp. 11 ◽  
Author(s):  
Shuguang Yang ◽  
Songmei Ma ◽  
Chunyan Wang ◽  
Jian Xu ◽  
Meifang Zhu
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Complex ◽  
Layer By Layer ◽  
Polymer Complexes ◽  
Layer By Layer Assembly ◽  
Long Time ◽  
Assembly Technique ◽  
Kinetics Of ◽  
Complexation Process ◽  
Layer Assembly

Polymer complexes can form in the bulk and at interfaces. Polymer complex formation in the bulk has been studied for a long time. The recently developed layer-by-layer assembly technique well realizes polymer complexation at interfaces. The layer-by-layer assembly of polymers based on Coulomb forces or hydrogen bonding is a repeated complexation process conducted at a surface. This paper reviews both single (once only) and repeatable interfacial complexation by hydrogen bonding, the available hydrogen bonding pairs for complexation, the thermodynamics and kinetics of complexation, and construction schemes.

Strongly coupled polypyrrole/molybdenum oxide hybrid films via electrochemical layer-by-layer assembly for pseudocapacitors

2019 ◽  
Vol 7 (16) ◽  
pp. 9815-9821 ◽  
Author(s):  
Ming-Yue Zhang ◽  
Yu Song ◽  
Di Guo ◽  
Duo Yang ◽  
Xiaoqi Sun ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Molybdenum Oxide ◽  
Valence State ◽  
Hybrid Film ◽  
Layer By Layer ◽  
Hybrid Films ◽  
Strongly Coupled ◽  
Layer By Layer Assembly ◽  
Kinetics Of ◽  
Layer Assembly

A strongly coupled layer-by-layer (LbL) PPy/MoOx hybrid film is demonstrated. The spectroscopy results indicate the protonation level of PPy is enhanced and the valence state of Mo in MoOx is reduced, which synergistically improve the charge transfer kinetics of the composites.

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
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