Examples of 'silanol groups' in a sentence
Meaning of "silanol groups"
silanol groups: Silanol groups are chemical groups consisting of a silicon atom bonded to an oxygen atom and a hydroxyl group (OH). They are commonly found in silica-based compounds and play a role in various chemical processes
How to use "silanol groups" in a sentence
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silanol groups
It carries silanol groups on its surface.
Curing will polymerize the hydrolyzed silanol groups.
Subsequent condensation of silanol groups produces siloxane from silanols.
The silanol groups may especially be substituted with hydrophobic groups.
Hydrophilic silicas have a large number of silanol groups at their surface.
These silanol groups may become ionized in the presence of the.
These processes provide capping of a major proportion of the silanol groups.
Silanol groups in inorganic phase can undergo a condensation reaction at high pH.
Alkoxysilanes are known to hydrolyze upon exposure to water to form reactive silanol groups.
They have silanol groups at the terminal positions of the polymer molecule.
The resulting material possess hydrophilic properties due to a maximization of silanol groups.
The coating comprising silanol groups on the surface thereof will be described hereafter.
On neutralization with an acid the metal is removed and terminal silanol groups are formed.
Silanol groups may for instance be substituted with hydrophobic groups resulting in a hydrophobic silica.
The reactive groups which cause the crosslinking reaction may be silanol groups.
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These silanol groups can chemically react with various reagents to render the silica hydrophobic.
Infrared absorption spectrum elucidates that allyl chloride is adsorbed by the silanol groups.
The shielding agents cover some of the silanol groups making the silica surface less polar.
The fumed silica particles readily aggregate through hydrogen bonding at the silanol groups therein.
During this process, silanol groups are reacted.
The alkoxy groups In such an unsaturated organosilicon compounds can be hydrolyzed into silanol groups.
Silicon substrates have an abundance of charged silanol groups and thus generate considerable EOF.
The silanol groups formed then react further, with crosslinking.
Preferably, step c is stopped while silanol groups still remain.
Silanol groups can in particular be replaced by hydrophobic groups, a hydrophobic silica is then obtained.
Agents used for functionalizing the silanol groups of the silica,.
In a second step, the silanol groups are crosslinked by a condensation reaction splitting off water.
Usually, it has several percentages by weight of silanol groups or alkoxy groups.
In a second step the silanol groups are cross-linked by a condensation reaction.
Optionally, such surface regions are siliceous in nature, containing silanol groups.
Remaining silanol groups also interact unfavourably with analytes, especially basic analytes.
Providing a substrate coated with a coating comprising silanol groups on its surface ;.
In particular, silanol groups can be substituted with hydrophobic groups to obtain a hydrophobic silica.
Preferably, it is desirable to react or at least shield all the surface silanol groups.
For glass, there is a fixed quantity of silanol groups per unit surface área.
The polysiloxane is obtained by the ( dehydration ) condensation of silane compounds having silanol groups.
It is also known that through condensation, silanol groups form siloxane chains.
These silicones are high molecular weight polydimethylsiloxane emulsion, containing reactive silanol groups.
Silanol groups can in particular be substituted with hydrophobic groups, a hydrophobic silica is then obtained.
Alternatively, the aminosilane compound is provided prehydrolyzed, containing one or more silanol groups.
In some embodiments, silanol groups are substituted with hydrophobic groups, a hydrophobic silica is then obtained.
In another embodiment, the substrate is selected from inorganic solid substrates comprising silanol groups.
In the same way as for silicon, silanol groups cover the surface of the glass.
Silanol groups SiOH arranged in pairs, originating from the breaking open of siloxane groups.
To promote affinity for glass fibers, a silicone oil containing silanol groups is preferably chosen.
For example, silanol groups may be substituted by hydrophobic groups, a hydrophobic silica is then obtained.
It also favors internal cross-linking between the silanol groups of the polymer chains.
The obtained silanol groups react with each other producing cross-links in the copolymer.
Fused silica, relative to precipitated silica, has a low number of surface hydroxyl or silanol groups.
In this hybrid resin, hydroxyl groups react with silanol groups to stabilize the molecular structure.
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Preferred silanol condensation catalysts are organometallic compounds
A blend of the ester with a silanol condensation catalyst
A silanol cure condensation polymerization technique can be employed
