scholarly journals Surface Layer Analysis of Silica Particles Treated with Mixed Silane Coupling Agents Having Different Alkoxy Group Number Using Pulse NMR

2010 ◽  
Vol 46 (8) ◽  
pp. 283-288
Author(s):  
Yoshinobu NAKAMURA ◽  
Yuji NISHIDA ◽  
Hiroaki HONDA ◽  
Syuji FUJII ◽  
Mariko SASAKI
Keyword(s):  
Surface Layer ◽  
Silica Particles ◽  
Alkoxy Group ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Layer Analysis ◽  
Silane Coupling ◽  
Group Number

A Facial Route for Preparation of Hydrophobic Nano-Silica Modified by Silane Coupling Agents

2017 ◽  
Vol 727 ◽  
pp. 353-358 ◽  
Author(s):  
Jian Hui Luo ◽  
Yuan Yang Li ◽  
Ping Mei Wang ◽  
Bi Bo Xia ◽  
Li Peng He ◽  
...  
Keyword(s):  
Sol Gel ◽  
Silica Particles ◽  
Coupling Agents ◽  
Nano Silica ◽  
Silane Coupling Agents ◽  
Stöber Method ◽  
Inorganic Hybrid ◽  
Organic Functional Groups ◽  
Silane Coupling ◽  
The Fourier Transform

Nano-silica was prepared using tetraethylorthosilicate (TEOS) as precursor by sol-gel technology based on stÖber method. These silica nanoparticals were further modified with silane coupling agents, i.e., Hexadecyltrimethoxysilane (HDTMS), dimethoxydiphenylsilane (DMMPS), to introduce organic functional groups on the surface of SiO2 nanoparticles. The Fourier transform-infrared (FTIR) spectra indicated that these silane coupling agents were anchored on the surface of silica particles. And the obtained organic–inorganic hybrid SiO2 particles showed an improvement in hydrophobicity, which can effectively inhibit these silica particles from aggregating.

Increasing chemisorbed silane coupling agents in surface‐treated layer of silica particles

2021 ◽  
pp. 51297
Author(s):  
Takashi Nakamura ◽  
Ryota Tsutsumi ◽  
Chisato Hashiguchi ◽  
Toshiki Terao ◽  
Kei Manabe ◽  
...  
Keyword(s):  
Silica Particles ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Treated Layer

Functionalization of Porous Clay Heterostructures with Silane Coupling Agents

2017 ◽  
Vol 54 (2) ◽  
pp. 341-344
Author(s):  
Anda Ionelia Mihai (Voicu) ◽  
Sorina Alexandra Garea ◽  
Eugeniu Vasile ◽  
Cristina Lavinia Nistor ◽  
Horia Iovu
Keyword(s):  
Pore Volume ◽  
Total Pore Volume ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Porous Clay Heterostructures ◽  
Bet Analysis ◽  
Silane Coupling ◽  
Ftir Spectrometry ◽  
Textural Parameters ◽  
Epoxy Groups

The goal of this paper was to study the modification of porous clay heterostructures (PCHs) with various silane coupling agents. Two commercial coupling agents (3-aminopropyl-triethoxysilane (APTES) and 3-glycidoxypropyl-trimethoxysilane (GPTMS)) with different functional groups (amine and epoxy groups) were used as modifying agents for the PCHs functionalization. The functionalization of PCH with APTES and GPTMS was evaluated by Fourier transform infrared (FTIR) spectrometry, thermogravimetric analysis (TGA), X-Ray Diffractions (XRD) and BET Analysis. FTIR spectra of modified PCHs confirmed the presence of characteristic peaks of silane coupling agents. TGA results highlighted an increase of weight loss for the modified PCHs that was assigned to the degradation of silane coupling agents (APTES and GPTMS) attached to the PCHs. The XRD results showed that the structure of modified PCHs was influenced by the type of the silane coupling agent. The functionalization of PCHs with silane coupling agents was also confirmed by BET analysis. Textural parameters (specific surface area (SBET), total pore volume (Vt )) suggested that the modified PCHs exhibit lower values of SBET and a significant decrease of total pore volume than unmodified PCHs.

Selection and Optimization of Silane Coupling Agents to Develop Durable Functional Cotton Fabrics Using TiO2 Nanoparticles

2021 ◽  
Vol 22 (1) ◽  
pp. 109-122
Author(s):  
S. Riaz ◽  
M. Ashraf ◽  
T. Hussain ◽  
M. T. Hussain ◽  
A. Younus ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Cotton Fabrics ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling

Effect of Silane Coupling Agents on Flowability and Compressibility of the Compound for Bonded NdFeB Magnet

2021 ◽  
Author(s):  
Xiaowei Zhang ◽  
Zilong Wang ◽  
Tianhao Li ◽  
Shengjie Zhu ◽  
Dunbo Yu ◽  
...  
Keyword(s):  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Ndfeb Magnet ◽  
Silane Coupling
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