Effects of water on the preparation, morphology, and properties of polyimide/silica nanocomposite films prepared by sol–gel process

2007 ◽  
Vol 104 (3) ◽  
pp. 1579-1586 ◽  
Author(s):  
Lizhong Jiang ◽  
Wencai Wang ◽  
Xiaowei Wei ◽  
Dezhen Wu ◽  
Riguang Jin
Keyword(s):  
Sol Gel ◽  
Nanocomposite Films ◽  
Sol Gel Process ◽  
Silica Nanocomposite

A modified sol-gel process for multiferroic nanocomposite films

2007 ◽  
Vol 102 (8) ◽  
pp. 083911 ◽  
Author(s):  
Ming Liu ◽  
Xin Li ◽  
Jing Lou ◽  
Shijian Zheng ◽  
Kui Du ◽  
...  
Keyword(s):  
Sol Gel ◽  
Nanocomposite Films ◽  
Sol Gel Process

Polyacrylate/silica nanocomposite materials prepared by sol–gel process

2007 ◽  
Vol 43 (10) ◽  
pp. 4169-4177 ◽  
Author(s):  
Jian-Zhong Ma ◽  
Jing Hu ◽  
Zhi-Jie Zhang
Keyword(s):  
Sol Gel ◽  
Nanocomposite Materials ◽  
Sol Gel Process ◽  
Silica Nanocomposite

Synthesis and Characterization of Ordered Mesoporous Carbon/Silica Hybrid Thin Films

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Xiaoxian Wang ◽  
Tiehu Li ◽  
Qilang Lin ◽  
Dawei Wang ◽  
Tingkai Zhao
Keyword(s):  
Electron Microscopy ◽  
Pore Size ◽  
Self Assembly ◽  
Sol Gel ◽  
Dip Coating ◽  
Silica Matrix ◽  
Nanocomposite Films ◽  
Evaporation Induced Self Assembly ◽  
Hybrid Thin Films ◽  
Silica Nanocomposite

Carbon/silica nanocomposite films with a hexagonal P6mm structure were fabricated directly by the oxidation and carbonization of surfactant/silica nanocomposite films, which were obtained by a dip-coating technique through a combination of sol-gel and evaporation-induced self-assembly. The as-synthesized nanocomposite films were characterized by scanning electron microscopy, X-ray diffraction, transmission electron microscopy and N2 adsorption-desorption. These analyses reveal that the carbon/silica nanocomposite films, with a narrow pore size distribution of mesopores, have an ordered symmetric structure. The pore sizes of this hybrid film can be controlled within a certain range by changing the carbonization temperature. In addition, the films are composed of a continuous silica matrix and a continuous carbon coating in about 1 nm adhered well to the silica matrix. The formation of carbon coatings from surfactant acts as a framework support to prevent the pore size of the silica matrix from shrinking.

Preparation and Characterization of Organic-Inorganic Nanocomposite Films for Holographic Recording

2005 ◽  
Vol 277-279 ◽  
pp. 1039-1043 ◽  
Author(s):  
Ji Young Park ◽  
Eunkyoung Kim
Keyword(s):  
Visible Light ◽  
Diffraction Efficiency ◽  
Sol Gel ◽  
High Refractive Index ◽  
Nanocomposite Films ◽  
Holographic Recording ◽  
Hybrid Solutions ◽  
Sol Gel Process ◽  
High Diffraction

The photopolymerization of aromatic methacrylate in organic-inorganic nanocomposite films for holographic recording media was investigated. Thick photopolymer films (thickness>200 µm) were prepared using organic-inorganic hybrid solutions containing high refractive index monomers, through the sol-gel process. These photopolymer films were polymerized upon exposure to a visible light with high photo conversions. The photopolymerization was highly effective under visible light irradiation and could be applied to a holographic medium with high diffraction efficiency (>95 %) by using a 532nm laser. The diffraction efficiency of the film was much affected by morphology, which might affect monomer diffusion during the recording.

Sol–gel chemistry for graphene–silica nanocomposite films

2014 ◽  
Vol 38 (8) ◽  
pp. 3777-3782 ◽  
Author(s):  
Plinio Innocenzi ◽  
Luca Malfatti ◽  
Barbara Lasio ◽  
Alessandra Pinna ◽  
Danilo Loche ◽  
...  
Keyword(s):  
Sol Gel ◽  
Silica Sol ◽  
Optical Transparency ◽  
Nanocomposite Films ◽  
Silica Films ◽  
Exfoliated Graphene ◽  
Silica Nanocomposite

Graphene–silica films with high optical transparency have been obtained by adding a dispersion of exfoliated graphene into a silica sol.

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