Combinatorial Plasma-Based Surface Modification of Polymers by Means of Plasma Printing with Gas-Carrying Plasma Stamps at Ambient Pressure

2013 ◽  
pp. 1-25 ◽  
Author(s):  
Alena Hinze ◽  
Andrew Marchesseault ◽  
Stephanus Büttgenbach ◽  
Michael Thomas ◽  
Claus-Peter Klages
Keyword(s):  
Surface Modification ◽  
Ambient Pressure

Synthesis of low shrinkage monolith alumina aerogels by surface modification and ambient pressure drying

2018 ◽  
Vol 13 (9) ◽  
pp. 1240-1244
Author(s):  
Chi Li ◽  
Zheng Gong ◽  
Likang Ding ◽  
Donglai Guo ◽  
Wenbin Hu
Keyword(s):  
Surface Modification ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Alumina Aerogels

A Novel Route for Preparation of Transparent and Superhydrophobic Silica Aerogels

2009 ◽  
Vol 1234 ◽  
Author(s):  
Guo-you Wu ◽  
Xuan Cheng ◽  
Yu-xi Yu ◽  
Ying Zhang
Keyword(s):  
Surface Modification ◽  
Ambient Pressure ◽  
Sol Gel ◽  
Three Dimensional ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Nanoporous Structure ◽  
Surface Areas ◽  
Superhydrophobic Silica ◽  
Dta Curve

AbstractSilica aerogels were synthesized via sol-gel processing followed by a two-step surface modification and ambient pressure drying, using methyltrimethoxysilane (MTMS) and trimethylchlorosilane (TMCS)/ethanol/n-hexane as surface modification agents. The transparent silica aerogels possessed the porosities, densities and specific surface areas in the range of 87.7–92.3%, 0.27–0.17 g·cm-3 and 852–1005 m2·g-1, respectively. The SEM and HRTEM analysis revealed the three-dimensional nanoporous structure of the silica aerogels. The presence of –CH3 functional groups on the surface of silica particles as indicated by the FTIR spectra was further confirmed by two visible exothermic peaks at 310 and 450–500 °C from the DTA curve. In addition, the silica aerogels were superhydrophobic with the contact angle as high as 160°.

Preparation of monolithic titania aerogels with high surface area by a sol–gel process combined surface modification

RSC Advances ◽  
2014 ◽  
Vol 4 (62) ◽  
pp. 32934-32940 ◽  
Author(s):  
Hui Yang ◽  
Wenjun Zhu ◽  
Sai Sun ◽  
Xingzhong Guo
Keyword(s):  
Surface Modification ◽  
Surface Area ◽  
Ambient Pressure ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Ambient Pressure Drying ◽  
Sol Gel Process

Monolithic titania (TiO2) aerogels with high surface area were successfully synthesized by the sol–gel process combined surface modification, followed by ambient pressure drying.

Characterization and comparison of uniform hydrophilic/hydrophobic transparent silica aerogel beads: skeleton strength and surface modification

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 55579-55587 ◽  
Author(s):  
Sekai Zong ◽  
Wei Wei ◽  
Zhifeng Jiang ◽  
Zaoxue Yan ◽  
Jianjun Zhu ◽  
...  
Keyword(s):  
Surface Modification ◽  
Industrial Production ◽  
Silica Aerogel ◽  
Large Scale ◽  
Preparation Method ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Silica Beads

This preparation method of skeleton improvement of wet silica beads by ambient pressure drying is suitable for economic and large-scale industrial production of silica aerogel beads.

Characteristics of ambient-pressure-dried aerogels synthesized via different surface modification methods

2015 ◽  
Vol 76 (1) ◽  
pp. 138-149 ◽  
Author(s):  
Zhi Li ◽  
Xudong Cheng ◽  
Song He ◽  
Xiaojing Shi ◽  
Hui Yang
Keyword(s):  
Surface Modification ◽  
Ambient Pressure

Facile synthesis of silica aerogel composites via ambient-pressure drying without surface modification or solvent exchange

Vacuum ◽  
2020 ◽  
Vol 173 ◽  
pp. 109117 ◽  
Author(s):  
Dongxuan Du ◽  
Yonggang Jiang ◽  
Junzong Feng ◽  
Liangjun Li ◽  
Jian Feng
Keyword(s):  
Surface Modification ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Solvent Exchange ◽  
Facile Synthesis

Fabrication of hydrophobic alumina aerogel monoliths by surface modification and ambient pressure drying

2010 ◽  
Vol 256 (20) ◽  
pp. 5973-5977 ◽  
Author(s):  
Lina Wu ◽  
Yudong Huang ◽  
Zhijiang Wang ◽  
Li Liu ◽  
Huifang Xu
Keyword(s):  
Surface Modification ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Alumina Aerogel

Surface Modification and Properties of SiO2 Nano Porous Aerogels

2008 ◽  
Vol 373-374 ◽  
pp. 702-705 ◽  
Author(s):  
Xing Yuan Ni ◽  
Yang Li ◽  
Zhi Hua Zhang ◽  
Jun Shen ◽  
Bin Zhou ◽  
...  
Keyword(s):  
Surface Modification ◽  
Activated Carbon ◽  
Surface Property ◽  
Ambient Pressure ◽  
Average Pore Size ◽  
Activated Carbon Fiber ◽  
Toxic Substances ◽  
High Porosity ◽  
Average Pore ◽  
Oh Groups

Surface modification is a process in which Si-CH3 groups of trimethylchlorosilane (TMCS) replace -OH groups on the inner surface of SiO2 aerogels, so the surface property of aerogels has shown hydrophobic performance which could be changed back to hydrophilic by 450 heat treatment. This aerogels with surface property controlled are prepared via sol-gel process with polyethoxydisiloxanes (E-40) used as precursor, and have typical porous structures dried at ambient pressure: high porosity (above 90 %), super specific surface area (about 1000 m2/g), low bulk density (down to 3.03 kg/m3) and average pore size is about 20 nm. This paper presents adsorption mechanisms in aerogels and illustrates that the adsorption capacity of aerogels is three or four times as much as that of activated carbon fiber (ACF) and granule of activated carbon (GAC). So SiO2 aerogels are potentially important to be used as absorbents being quite efficient to adsorb toxic substances.

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