Synthesis of Mesoporous Silica from Commercial Poly(ethylene oxide)/Poly(butylene oxide) Copolymers:  Toward the Rational Design of Ordered Mesoporous Materials

2003 ◽  
Vol 107 (48) ◽  
pp. 13368-13375 ◽  
Author(s):  
Chengzhong Yu ◽  
Jie Fan ◽  
Bozhi Tian ◽  
Galen D. Stucky ◽  
Dongyuan Zhao
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Oxide ◽  
Mesoporous Materials ◽  
Rational Design ◽  
Ordered Mesoporous Materials ◽  
Ordered Mesoporous ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Polyisobutylene-block-Poly(ethylene oxide) for Robust Templating of Highly Ordered Mesoporous Materials

2005 ◽  
Vol 17 (9) ◽  
pp. 1158-1162 ◽  
Author(s):  
M. Groenewolt ◽  
T. Brezesinski ◽  
H. Schlaad ◽  
M. Antonietti ◽  
P. W. Groh ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Mesoporous Materials ◽  
Ordered Mesoporous Materials ◽  
Ordered Mesoporous ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Crystallization ability of poly(lactic acid) block segments in templating poly(ethylene oxide-b-lactic acid) diblock copolymers affects the resulting structures of mesoporous silicas

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22625-22637 ◽  
Author(s):  
Oleksii Altukhov ◽  
Shiao-Wei Kuo
Keyword(s):  
Lactic Acid ◽  
Ethylene Oxide ◽  
Diblock Copolymers ◽  
Mesoporous Silicas ◽  
Poly Lactic Acid ◽  
Ordered Mesoporous Materials ◽  
Crystallization Ability ◽  
Ordered Mesoporous ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Eliminating the crystallization ability of PLLA to amorphous PLA block segment allowed us to obtain long-range-ordered mesoporous materials.

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.

Solvent-tuning of ordered mesoporous silicas prepared through evaporation-induced self-assembly templated by poly(ethylene oxide-b-ε-caprolactone)

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 61012-61021 ◽  
Author(s):  
Wei-Cheng Chu ◽  
Chen-Xin Lin ◽  
Shiao-Wei Kuo
Keyword(s):  
Ethylene Oxide ◽  
Self Assembly ◽  
Mesoporous Silicas ◽  
Size Distributions ◽  
Ordered Mesoporous ◽  
Pore Size Distributions ◽  
Evaporation Induced Self Assembly ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Selection Of

Highly ordered mesoporous silicas having narrow pore size distributions and various morphologies merely through selection of an appropriate solvent.

scholarly journals Multicompartmental Mesoporous Silica/Polymer Nanostructured Hybrids: Design Capabilities by Integrating Linear and Star-Shaped Block Copolymers

Polymers ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 51
Author(s):  
Zacharoula Iatridi ◽  
Kyriaki Evangelatou ◽  
Nikolaos Theodorakis ◽  
Athina Angelopoulou ◽  
Konstantinos Avgoustakis ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Oxide ◽  
Chemical Species ◽  
Multiple Drug ◽  
Layer By Layer ◽  
Hydrophobic Chemical ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Theranostic Applications ◽  
Multiple Drug Delivery

Poly(2-vinyl pyridine)-b-poly(ethylene oxide) (P2VP-b-PEO) linear diblock copolymer and polystyrene–poly(ethylene oxide) (PS10PEO10) heteroarm star copolymer were used as building elements to prepare organic–inorganic hybrids. By using the layer-by-layer (LbL) methodology, these elements were integrated on mesoporous silica through non-covalent interactions, namely, ionic and H-bonding. For the latter, tannic acid (TA) was used as an intermediate layer. The deposition of the various layers was monitored by thermogravimetric analysis (TGA), electrophoretic measurements, and confocal microscopy. The final silica hybrid, bearing alternating P2VP-b-PEO and PS10PEO10 star layers was capable of carrying one hydrophilic and two hydrophobic chemical species in distinct compartments. These multicompartmental organic–inorganic hybrids could be used as nanostructured carriers for pH-responsive multiple drug delivery and potential theranostic applications.

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