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Structural Modifications in Chemically Polymerized Glass Networks and their Effects
Author(s) -
Yoldas Bulent E.
Publication year - 2010
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/j.2041-1294.2010.00013.x
Subject(s) - materials science , polymerization , thermoplastic , oxide , photoluminescence , sintering , chemical engineering , viscosity , photonics , rheology , composite material , chemical physics , polymer , metallurgy , chemistry , optoelectronics , engineering
The network morphology of oxides and glasses formed by chemical polymerization is subject to considerable structural manipulations. The structural variations are introduced by the chemical reactions of metal organic compounds that construct and shape the underlying oxide networks in these sol–gel systems. In addition, significant nonstoichiometry may be introduced during the thermal removal of structural hydroxyl and organic groups that frame the oxide networks. Resultant nonequilibrium states persist at very high temperatures and affect thermoplastic and photonic properties of these materials. Among the strongly affected properties are sintering and melting temperatures, molten state viscosity, and emergence of photoluminescence. In this article, the genesis and nature of the structural variations in the chemically polymerized glass networks and exploratory experiments showing their effect on the thermoplastic and photonic properties are presented.