Silanization
Silanization is the covering of a surface through self-assembly with organofunctional alkoxysilane molecules. Mineral components like Mica, glass and metal oxide surfaces can all be silanized, because they contain hydroxyl groups which attack and displace the alkoxy groups on the silane thus forming a covalent -Si-O-Si- bond. The goal of silanization is to form bonds across the interface between mineral components and organic components present in paints, adhesives, etc. Silanization (or siliconization) of glassware increases its hydrophobicity and is used in cell culturing to reduce adherence of cells to flask walls.[1]
Contents
Properties
Organofunctional alkoxysilane molecules have both organic and inorganic properties. Lua error in package.lua at line 80: module 'strict' not found.
Mechanism
Lua error in package.lua at line 80: module 'strict' not found.
Organofunctional alkoxysilanes
The alkoxy groups usually used are the methoxy (-OCH3) and the ethoxy (-OCH2CH3) groups. The organofunctional alkoxysilanes are classified according to their organic functions:
Aminosilanes
The organic function is a primary or secondary amine:
- APTES (3-aminopropyl)-triethoxysilane CAS# 919-30-2
- APDEMS (3-aminopropyl)-diethoxy-methylsilane
- APDMES (3-aminopropyl)-dimethyl-ethoxysilane
- APTMS (3-aminopropyl)-trimethoxysilane CAS# 13822-56-5
Glycidoxysilanes
The organic function is an epoxide:
- GPMES (3-glycidoxypropyl)-dimethyl-ethoxysilane
Mercaptosilanes
The organic function is a thiol:
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />- ↑ Lua error in package.lua at line 80: module 'strict' not found.
