Please use this identifier to cite or link to this item: doi:10.22028/D291-24302
Title: New materials for contact lenses prepared from Si- and Ti-alkoxides by the sol-gel process
Author(s): Philipp, Gottfried
Schmidt, Helmut K.
Language: English
Year of Publication: 1984
OPUS Source: Journal of non-crystalline solids. - 63. 1984, 1/2, S. 283-292
SWD key words: Kontaktlinse
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Methods of synthesizing materials for hard contact lenses were developed by hydrolysis and condensation of an epoxide substituted alkoxysilane and Ti-alkoxides. To enforce sufficient tensile strength, polymethacrylates were incorporated as linear crosslinking elements using a methacryloxy substituted alkoxysilane as a hook between the siliceous network and the polymer chain. The incorporation of titania led to dense monolithic products which could be cured only with some minor shrinkages. Good wettabilities [contact angles with water: (25 ± 5)°] are due to glycol groupings formed by the epoxide radicals. O2-permeabilities of P = (13 ± 1)
Link to this record: urn:nbn:de:bsz:291-scidok-25893
Date of registration: 28-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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