Multilayer composite surfaces prepared by an electrostatic self-assembly technique with quaternary ammonium salt and poly(acrylic acid) on poly(acrylonitrile-co-acrylic acid) membranes

2008 ◽  
Vol 110 (5) ◽  
pp. 3234-3241 ◽  
Author(s):  
Takaomi Kobayashi ◽  
Huitan Fu ◽  
Qian Cui ◽  
Hongying Wang
2018 ◽  
Vol 42 (11) ◽  
pp. 8320-8324 ◽  
Author(s):  
Yufan Wu ◽  
Haojie Hua ◽  
Qiaochun Wang

An emissive supramolecular polymer was constructed by the self-assembly between a TPE quaternary ammonium salt and a cucurbit[5]uril analogue.


2010 ◽  
Vol 663-665 ◽  
pp. 252-255
Author(s):  
Xue Feng Li ◽  
Shao Xian Peng

A stable and high lubricant ultrathin film was fabricated by self-assembled procedure at room temperature. Thickness of the films was regularly increased with the layer-by-layer self-assembly process in which poly (acrylic acid)-ferric hydroxide (PAA-Fe(OH)3) sol as anion polyelectrolyte and photosensitive diazoresin (DR) as cationic polyelectrolyte. And the process which based on electrostatic attraction was verified by UV-vis measurement. Furthermore, the ionic bonds in the films converted to covalent bonds under UV irradiation. Finally, the surface morphology and microtribology of the films were investigated by atomic force microscopy (AFM) and friction force microscopy (FFM). The results indicate that the films are flat and uniform through the self-assembly technique and the surface friction coefficients maintain at a rather low value.


2020 ◽  
Vol 22 (19) ◽  
pp. 6437-6443
Author(s):  
Cheng-Kou Liu ◽  
Meng-Yi Chen ◽  
Xin-Xin Lin ◽  
Zheng Fang ◽  
Kai Guo

A catalyst-, oxidant-, acidic solvent- and quaternary ammonium salt-free electrochemical para-selective hydroxylation of N-arylamides at rt in batch and continuous-flow was developed.


2013 ◽  
Vol 50 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Yong-Qiang Sun ◽  
Wen-Jing Li ◽  
Wan-Xu Wang ◽  
Qiu-Xiao Li ◽  
Wieslaw Hreczuch ◽  
...  

1997 ◽  
Vol 62 (6) ◽  
pp. 849-854 ◽  
Author(s):  
Vladislav Holba ◽  
Renata Košická

The paper deals with instability of solutions of quaternary ammonium permanganates, QMnO4 (Q = tetraethyl-, tetra-1-propyl-, tetra-1-butyl-, tetra-1-pentyl-, tetra-1-octyl-, and cetyltrimethylammonium), in dichloromethane and presents the rate constants and activation parameters of the reduction of permanganate. Attention was paid to the properties of colloidal Mn(IV) intermediate. The stability of the solutions depends markedly on the quaternary ammonium salt used.


Fuel ◽  
2021 ◽  
Vol 287 ◽  
pp. 119434
Author(s):  
Jun Chen ◽  
Hongliang Li ◽  
Chunfu Liu ◽  
Lingyun Liu ◽  
Yu Sun ◽  
...  

RSC Advances ◽  
2019 ◽  
Vol 9 (44) ◽  
pp. 25667-25676 ◽  
Author(s):  
Jingyu Wang ◽  
Minghao Sui ◽  
Zhanfang Ma ◽  
Hongwei Li ◽  
Bojie Yuan

Polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) were synthesized, and they exhibited significant antibacterial capacity against Bacillus subtilis.


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