Effect of surface interaction of silica nanoparticles modified by silane coupling agents on viscosity of methylethylketone suspension

2007 ◽  
Vol 305 (2) ◽  
pp. 315-323 ◽  
Author(s):  
Motoyuki Iijima ◽  
Mayumi Tsukada ◽  
Hidehiro Kamiya
Keyword(s):  
Silica Nanoparticles ◽  
Surface Interaction ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Effect Of Surface

Preparation of Polymer Microspheres Using Silane Coupling Agent Modified Nano-SiO2 as Single Stabilizer

2011 ◽  
Vol 341-342 ◽  
pp. 247-251 ◽  
Author(s):  
Guang Hui Ma ◽  
Fa Ai Zhang ◽  
Chang Sheng Gu
Keyword(s):  
Silica Nanoparticles ◽  
Average Particle Size ◽  
Optical Microscope ◽  
Coupling Agents ◽  
Average Particle ◽  
Silane Coupling Agents ◽  
Pickering Emulsion Polymerization ◽  
Silane Coupling ◽  
Unmodified Silica

This paper demonstrates that silica nanoparticles were modified by the four silane coupling agents (KH-151, KH-550, KH-560, KH-570) firstly, then polystyrene/silica (PS/SiO2) composite microsphere with PS core and silica nanoparticles shell were prepared by Pickering emulsion polymerization. The characterization of optical microscope (OM), scanning electron microscope (SEM), and thermogravimetic analysis ( TGA) illustrates that these microsphere are composed of PS and silica nanoparticles. Silica nanoparticles modified by the different silane coupling agents could form the stable PS/SiO2 microsphere over 70 °C, while the unmodified silica nanoparticles are difficult to form stable PS/SiO2 microspheres at the same temperature. The PS/KH-151-SiO2 microsphere exhibits the least average particle size, while the PS/KH-570-SiO2 microsphere produces the largest. Both SEM and TGA confirm that microsphere surface exists solid nanoparticles.

Effect of surface treatment with commercial silane coupling agents

2015 ◽  
Vol 31 ◽  
pp. e16
Author(s):  
K. Ohashi ◽  
K. Miyake ◽  
H. Yamaguchi ◽  
A. Teranaka ◽  
T. Shiiya ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Effect Of Surface

Effect of Surface Modification on Properties of Natural Hydroxyapatite/Polypropylene Composites

2007 ◽  
Vol 361-363 ◽  
pp. 511-514 ◽  
Author(s):  
Nitinat Suppakarn ◽  
S. Sanmaung ◽  
Yupaporn Ruksakulpiwat ◽  
Wimonlak Sutapun
Keyword(s):  
Surface Modification ◽  
Silane Coupling Agent ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Effective Agent ◽  
Polypropylene Composites ◽  
Silane Coupling ◽  
Pp Composites ◽  
Natural Hydroxyapatite ◽  
Effect Of Surface

Cattle bone-based hydroxyapatite (HA) powders were prepared. Three types of silane coupling agents, i.e. γ-aminopropyl triethoxysilane (APES), methyl trimethoxysilane (MTMS), and γ-glycidoxypropyl trimethoxysilane (GPMS) were used to modify the HA surface. Untreated HA powders and silane-treated HA powders were utilized to produce HA/polypropylene (PP) composites containing a 60% (w/w) of HA content. Effect of filler surface modification on properties of HA/PP composites were investigated. The results suggested that treating HA surface with a silane coupling agent enhances interaction at HA-PP interface. Among the silane coupling agents used in this study, APES is, on average, the most effective agent for enhancing stiffness of HA/PP composites.

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
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