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where X = O-tris-(tnmethylsiloxy) silyl-y-propyl methacrylate (TRIS) or
X = NH-tris-(trimethylsiloxy) silyl-y-propilmetakriloil-carbamate (TMSK)
Currently, syntheses involving these monomers used to prepare the silicone
-hydrogel-materials for soft contact lenses with hydrophilic properties
combining high oxygen permeability [83-88]. Compatibility components in such
systems significantly improved, if the hydrophobic component used partially
fluorinated silicone macromonomer [88].
There are exotic approaches to solving the problem of compatibility of
components in the synthesis of amphiphilic conetworks. Upon receipt
conetworks first hydrophilic monomer is used instead of its precursor -
monomer containing hydrophobic trimethylsiloxane group. After completion of
the synthesis conetwork monomer units hydrolyzed, resulting in the elimination
of organic silicon fragments and substitution of hydroxyl groups on [26].
The process embodiment discussed the synthesis of amphiphilic
conetworks options depends on the purpose of the resulting composite hydrogel.
If a hydrogel is used as soft contact lenses or membranes, crosslinked
considering the nature of the polymer, the most suitable methods are the reaction
of processing methods, such as carrying out the polymerization in a mold having
the configuration of the product. If the hydrogel is intended to apply as a drug
carrier or other material, the various embodiments suitable dispersion
polymerization, allowing the material to obtain a pellet of the desired size.
Potential use of composite hydrogels conetworks type can be quite varied.
But because of possible applications - the production of silicone - hydrogel soft
contact lenses. Currently, in - apparently, this is the main and most advanced
area of use of amphiphilic conetworks. An advantage of silicone - hydrogel soft
contact lenses prior to the lenses made of conventional hydrogels, is a
combination of a hydrophilic material properties providing biocompatibility of
the hydrogel with living tissues with high oxygen permeability, which reduces
the risk of hypoxic damage the cornea of extended continuous wear.
Manufacture of soft contact lenses extended continuous wear - promising, but
also the most difficult areas of conetworks, because along with hydrophilic
property and oxygen permeability the material must have certain optical
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