scholarly journals Poly(ethylene oxide)-b-poly(l-lactide) Diblock Copolymer/Carbon Nanotube-Based Nanocomposites: LiCl as Supramolecular Structure-Directing Agent

2011 ◽  
Vol 12 (11) ◽  
pp. 4086-4094 ◽  
Author(s):  
Franck Meyer ◽  
Jean-Marie Raquez ◽  
Pierre Verge ◽  
Inger Martínez de Arenaza ◽  
Borja Coto ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Ethylene Oxide ◽  
Diblock Copolymer ◽  
Supramolecular Structure ◽  
Structure Directing Agent ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Preparation of Organized Mesoporous Silica from Sodium Metasilicate Solutions in Alkaline Medium Using Nonionic Surfactants

2003 ◽  
Vol 68 (10) ◽  
pp. 2019-2031 ◽  
Author(s):  
Markéta Zukalová ◽  
Jiří Rathouský ◽  
Arnošt Zukal
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Oxide ◽  
Sodium Metasilicate ◽  
Spherical Particles ◽  
Structure Directing Agent ◽  
Inorganic Species ◽  
Poly Ethylene Oxide ◽  
Acidic Conditions ◽  
Poly Ethylene ◽  
Hydrolysis Of

A new procedure has been developed, which is based on homogeneous precipitation of organized mesoporous silica from an aqueous solution of sodium metasilicate and a nonionic poly(ethylene oxide) surfactant serving as a structure-directing agent. The decrease in pH, which induces the polycondensation of silica, is achieved by hydrolysis of ethyl acetate. Owing to the complexation of Na+ cations by poly(ethylene oxide) segments, assembling of the mesostructure appears to occur under electrostatic control by the S0Na+I- pathway, where S0 and I- are surfactant and inorganic species, respectively. As the complexation of Na+ cations causes extended conformation of poly(ethylene oxide) segments, the pore size and pore volume of organized mesoporous silica increase in comparison with materials prepared under neutral or acidic conditions. The assembling of particles can be fully separated from their solidification, which results in the formation of highly regular spherical particles of mesoporous silica.

Molecular Dynamics Study of Polystyrene-b-poly(ethylene oxide) Asymmetric Diblock Copolymer Systems

Langmuir ◽  
2017 ◽  
Vol 33 (36) ◽  
pp. 8856-8868 ◽  
Author(s):  
M. Dobies ◽  
M. Makrocka-Rydzyk ◽  
J. Jenczyk ◽  
M. Jarek ◽  
R. J. Spontak ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ethylene Oxide ◽  
Diblock Copolymer ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Synthesis and self-assembly of a novel amphiphilic diblock copolymer consisting of isotactic polystyrene and 1,4-trans-polybutadiene-graft-poly(ethylene oxide)

RSC Advances ◽  
2018 ◽  
Vol 8 (23) ◽  
pp. 12752-12759
Author(s):  
HuaQing Liang ◽  
QiHua Zhou ◽  
YongJiang Long ◽  
WanChu Wei ◽  
Shuo Feng ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Amphiphilic Diblock Copolymer ◽  
Isotactic Polystyrene ◽  
Poly Ethylene Oxide ◽  
Assembly Behavior ◽  
Poly Ethylene

Herein, a novel amphiphilic diblock copolymer consisting of isotactic polystyrene and 1,4-trans-polybutadiene-graft-poly(ethylene oxide) was synthesized and its self-assembly behavior was investigated.

Synthesis of Multi-walled Carbon Nanotube/Poly(ethylene oxide) Hybrids

Polymer Korea ◽  
2010 ◽  
Vol 34 (3) ◽  
pp. 198-201
Author(s):  
Chae Hwan Hong ◽  
Do Suk Han ◽  
Byeong Uk Nam
Keyword(s):  
Carbon Nanotube ◽  
Ethylene Oxide ◽  
Multi Walled Carbon Nanotube ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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