Acid-induced Control of Surface Properties Using a Catecholic Silane Coupling Reagent

2019 ◽  
Vol 48 (6) ◽  
pp. 551-554 ◽  
Author(s):  
Michinari Kohri ◽  
Saki Irie ◽  
Shigeaki Yamazaki ◽  
Kotona Kohaku ◽  
Tatsuo Taniguchi ◽  
...  
Keyword(s):  
Surface Properties ◽  
Coupling Reagent ◽  
Silane Coupling

scholarly journals In vitro apatite formation on organic polymers modified with a silane coupling reagent

2005 ◽  
Vol 2 (4) ◽  
pp. 335-340 ◽  
Author(s):  
Yuki Shirosaki ◽  
Masaaki Kubo ◽  
Seisuke Takashima ◽  
Kanji Tsuru ◽  
Satoshi Hayakawa ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Body Fluid ◽  
Contact Angles ◽  
Organic Polymer ◽  
Apatite Formation ◽  
Distilled Water ◽  
Organic Polymers ◽  
Coupling Reagent ◽  
Silane Coupling

γ-Methacryloxypropyltrimethoxysilane (γ-MPS) was grafted to high-density polyethylene, polyamide and silicone rubber substrates by the emulsion polymerization procedure in order to provide these organic polymers with in vitro apatite-forming ability. The contact angles towards distilled water of the γ-MPS-grafted specimens were lower than those of the original organic polymer specimens, indicating that the grafted substrates were more hydrophilic. The in vitro apatite formation in a simulated body fluid (Kokubo solution) was confirmed for several of the γ-MPS-grafted specimens.

Performances improvement of eosin Y sensitized solar cells by modifying TiO2 electrode with silane-coupling reagent

2009 ◽  
Vol 54 (15) ◽  
pp. 2633-2640 ◽  
Author(s):  
YanFang Zhou ◽  
XuePing Li ◽  
JingBo Zhang ◽  
XiaoWen Zhou ◽  
Yuan Lin
Keyword(s):  
Solar Cells ◽  
Tio2 Electrode ◽  
Eosin Y ◽  
Coupling Reagent ◽  
Silane Coupling ◽  
Sensitized Solar Cells

Photoacoustic study of silica—silane coupling reagent interactions

1981 ◽  
Vol 16 (4) ◽  
pp. 279-288 ◽  
Author(s):  
M.E. Abu-Zeid ◽  
G.S. Mahmoud ◽  
A.A. Anani ◽  
A.F. Halasa ◽  
A.A. Mobasher
Keyword(s):  
Coupling Reagent ◽  
Silane Coupling

scholarly journals Dispersion and deagglomerat1on of nano-SiO2 particles with a silane modification reagent in supercritical CO2

2007 ◽  
Vol 61 (3) ◽  
pp. 109-116
Author(s):  
Dusica Stojanovic ◽  
Goran Vukovic ◽  
Aleksandar Orlovic ◽  
Petar Uskokovic ◽  
Radoslav Aleksic ◽  
...  
Keyword(s):  
Conventional Method ◽  
Supercritical Co2 ◽  
Particle Surface ◽  
Comparison Method ◽  
The Other ◽  
Hydroxyl Groups ◽  
Nano Sio2 ◽  
Coupling Reagent ◽  
Silane Coupling ◽  
Sio2 Particles

The supercritical CO2 method was used in order to perform deagglomeration and improve the dispersion of nano-SiO2 particles. ?-Met-hacryloxypropyltrimethoxysilane was used as the surface modification reagent. The conventional method for coating nano-SiO2 particles was used as the comparison method. Considerable improvement of the dispersion and deagglomeration was found using supercritical CO2. Analysis of the TEM micrographs and DLS results showed the reduction of the average size of the agglomerates with the silane coupling reagent. Thermogravimetric analysis (TGA) showed that the particles treated in super?critical CO2 were more thermally stable than particles treated by conventional method. Encapsulation of several particles coated with the silane coupling reagent was observed in certain parts of the primary particles. A chemical reaction takes place between the modification reagent, MEMO silane, and active hydroxyl groups on the surface of the nano-SiO2 particles. A larger quantity of MEMO silane reacted using the con?ventional method instead of the supercritical method. On the other hand, the reacted silane molecules were better arranged around the particle surface in the supercritical method because of the formation of covalent or self-assembled structures. Polycondensed structures were preferentially obtained in the conventional method. This was achieved by using supercritical CO2, which has a high solvating power such as organic solvents and physical properties (low viscosity, low surface tension and high diffusion coefficient) similar to gases on the other side. These properties enable the sufficient and uniform wettability of nano-SiO2 particle surfaces. These results are important for obtaining nanofillers with improved dispersion and polymer wettability. Such nanofillers can be used to obtain composite materials with considerably improved mechanical characteristics.

Ex Cathedra Immobilization of 8-Hydroxyquinoline to Inorganic Carriers via a New Silane Coupling Reagent for Extractive Sample Cleanup of Iron(III)

2017 ◽  
Vol 62 (10) ◽  
pp. 3284-3296 ◽  
Author(s):  
Dipika Roy ◽  
Rimi Sarkar ◽  
Bhavya Srivastava ◽  
Mousumi Chatterjee ◽  
Sneha Mondal ◽  
...  
Keyword(s):  
Coupling Reagent ◽  
Silane Coupling

Design of Experiment: A Statistical Approach to Understanding Factors Influencing Surface Properties of Sol-Gel Based Non-Stick Ceramic Coatings

2012 ◽  
Vol 622-623 ◽  
pp. 420-425
Author(s):  
Alex Kwasi Kumi ◽  
Allan Chelashaw ◽  
Yu Mei Zhang ◽  
Li Feng Li
Keyword(s):  
Contact Angle ◽  
Surface Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Sol Gel ◽  
Ceramic Coatings ◽  
Curing Temperature ◽  
Factors Influencing ◽  
Silane Coupling ◽  
Advancing Contact Angle

Ceramic coatings based on sol-gel method have increasingly gained much attention in recent times. In order to ascertain important experimental factors (variables) influencing surface properties, such as adhesion, pencil hardness and advancing contact angle (non-stick) of sol coatings, a 26-1-factorial screening design with six experimental variables, precursor mole ratio, low surface energy polymer concentration, silane coupling agent (SCA) concentration, silica nanoparticles concentration (SNP’s),curing temperature and three responses ( surface properties) were investigated. The results indicate that silane coupling agent concentration, SNP’s concentration and their interaction were the most significant experimental factors influencing advancing contact angle. None of the experimental factors studied were statistically significant with respect to hardness and adhesion.

Improvement of the pervaporation performance of silicalite membranes by modification with a silane coupling reagent

1995 ◽  
Vol 5 (3) ◽  
pp. 179-184 ◽  
Author(s):  
Tsuneji Sano ◽  
Masaru Hasegawa ◽  
Shigeyuki Ejiri ◽  
Yusuke Kawakami ◽  
Hiroshi Yanagishita
Keyword(s):  
Coupling Reagent ◽  
Silane Coupling

Photoacoustic study of silica—silane coupling reagent interactions

1981 ◽  
Vol 16 (3) ◽  
pp. 279-288 ◽  
Author(s):  
M.E. Abu-Zeid ◽  
G.S. Mahmoud ◽  
A.A. Anani ◽  
A.F. Halasa ◽  
A.A. Mobasher
Keyword(s):  
Coupling Reagent ◽  
Silane Coupling
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