Mechanistic Insight into Surface-Initiated Polymerization of Methyl Methacrylate and Styrene via ATRP from Ordered Mesoporous Silica Particles

2009 ◽  
Vol 42 (16) ◽  
pp. 5983-5995 ◽  
Author(s):  
Pamela Pasetto ◽  
Hélène Blas ◽  
Fabrice Audouin ◽  
Cédric Boissière ◽  
Clément Sanchez ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Methyl Methacrylate ◽  
Silica Particles ◽  
Ordered Mesoporous Silica ◽  
Surface Initiated Polymerization ◽  
Mechanistic Insight ◽  
Ordered Mesoporous ◽  
Insight Into

Thermal conductivity of monolithic assemblies of SBA-15 ordered mesoporous silica particles

2015 ◽  
Vol 201 ◽  
pp. 124-133 ◽  
Author(s):  
Yassine Belmoujahid ◽  
Magali Bonne ◽  
Yves Scudeller ◽  
Donald Schleich ◽  
Yves Grohens ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Mesoporous Silica ◽  
Silica Particles ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous

Luminescence properties of Eu-complex formations into ordered mesoporous silica particles obtained by the spray pyrolysis process

2015 ◽  
Vol 26 (33) ◽  
pp. 335604 ◽  
Author(s):  
Lucas A Rocha ◽  
Janaina do C Freiria ◽  
José Maurício A Caiut ◽  
Sidney J L Ribeiro ◽  
Younes Messaddeq ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Spray Pyrolysis ◽  
Silica Particles ◽  
Luminescence Properties ◽  
Ordered Mesoporous Silica ◽  
Pyrolysis Process ◽  
Ordered Mesoporous ◽  
Spray Pyrolysis Process ◽  
Complex Formations

scholarly journals Improvement in Comprehensive Properties of Poly(Methyl Methacrylate)-Based Gel Polymer Electrolyte by a Core-Shell Poly(Methyl Methacrylate)-Grafted Ordered Mesoporous Silica

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Lixin Xu ◽  
Feng Xu ◽  
Feng Chen ◽  
Jintao Yang ◽  
Mingqiang Zhong
Keyword(s):  
Ionic Conductivity ◽  
Mesoporous Silica ◽  
Methyl Methacrylate ◽  
Gel Polymer Electrolyte ◽  
Core Shell ◽  
Ordered Mesoporous Silica ◽  
Exterior Surface ◽  
Poly Methyl Methacrylate ◽  
Comprehensive Properties ◽  
Ordered Mesoporous

A novel strategy, herein, is demonstrated for improving comprehensive properties of poly (methyl methacrylate)(PMMA)-based gel polymer electrolyte (GPE) with a core-shell PMMA-grafted ordered mesoporous silica (OMS-g-PMMA). The OMS-g-PMMA was synthesized by surface-initiated atom transfer radical polymerization of methyl methacrylate from the exterior surface of OMS particle. A series of PMMA-based GPE membrances, filled with the OMS-g-PMMA of different contents, were further prepared by solution casting technique. The OMS-g-PMMA was confirmed to possess regular core-shell structure, in which a PMMA shell is chemically grafted to the exterior surface of silica core remaining intact mesoporous characteristics. Compared to the bare OMS, the OMS-g-PMMA is found to more effectively improve the comprehensive properties of PMMA-based GPE including ionic conductivity, thermal stability, and mechanical properties as well. For the PMMA-based GPE filled with 15 phr OMS-g-PMMA, the ionic conductivity at 25°C reaches 1.59 × 10−4 S⋅cm−1, which is higher by nearly two orders than that of the corresponding filler-free parent GPE. Meanwhile, the tensile strength and Young's modulus increase by 2.39 and 2.41 times, respectively, with an improvement in glass-transition temperature (Tg) about 10°C. The excellent comprehensive properties make the PMMA-based GPE filled with OMS-g-PMMA as potential candidate for electrochemical devices.

Micron to Sub-Micron Sized Highly Ordered Mesoporous Silica Particles Prepared Using a High Energy Ball Milling Process

2003 ◽  
Vol 775 ◽  
Author(s):  
J. Eric Hampsey ◽  
Claudio L. De Castro ◽  
Byron F. McCaughey ◽  
Donghai Wang ◽  
Brian S. Mitchell ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mesoporous Silica ◽  
Ball Milling ◽  
High Energy ◽  
Silica Particles ◽  
Milling Process ◽  
High Energy Ball Milling ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous ◽  
Energy Ball

AbstractHighly ordered mesoporous silica particles with sizes in the micron to sub-micron range are of great interest due to their applications as catalysts and filler materials. Currently, mesoporous silica particles are synthesized using large amounts of solvent, which is impractical for large scale-up in industry. This paper reports on a high-energy ball milling process that has been employed to create micron to sub-micron sized mesoporous silica particles starting from a silica xerogel prepared by a surfactant self-assembly sol-gel process. We have studied the effect of parameters such as milling media (e.g., zirconia, stainless steel, and steel centered nylon balls), milling time, the presence of surfactants during milling, particle size, and pore structure. Results from transmission electron microscopy (TEM), scanning electron microscopy (SEM), Xray diffraction (XRD), and nitrogen adsorption demonstrate the feasibility of producing large quantities of mesostructured particles by a simple milling process.

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