The author describes a novel method of preparing hydrolysis-stable non-silicate glasses which is based on experimental work accomplished over the past twenty years. As such, the method is the beginning of a new approach to glass-making by the use of a molecularly-polymerizable precursor. The book elucidates the technical details required to produce such molecularly-polymerized glasses from carefully prepared inorganic molecular monomers. Essentially, only silicate-based glasses have been known to be stable, whereas non-silicate glasses could not be attributed with such properties. Such glasses have, therefore, not found widespread usage in industry. The new phosphate glasses described here exhibit stabilities superior to many of the silicate glasses. For example, the nuclear-waste glass shows no measurable loss at all in boiling water, something entirely foreign to the zinc borosilicate glasses developed for nuclear waste encapsulation in the U.S. by Battelle-Northwest. The exceptional stability of the new glasses is achieved by selecting an inorganic compound capable of being polymerized, and then causing it to polymerize in a proper manner, in the absence of chain-stoppers. To obtain glasses equal or superior in hydrolysis stability to silicate-based systems it is imperative to employ molecular polymerization in situ, starting from carefully prepared precursors of exact stoichiometric proportion. Researchers in glass and glass properties will find this volume extremely useful and those involved in organic polymers will be intrigued by the similarities and disparities of the two systems.
For B.Sc. Part I,II & III Classes of all Indian Universities and also covering U.G.C. model curriculum.
The high chemical durability of these glasses could be due to the formation of the white protective coating which can be Ca(OH)2 and/or Mg(OH)2. ... [5] R.C. Ropp, Inorganic Polymeric Glasses, Elsevier, New York, (1992).
Inorganic polymers are also extensively employed as abrasives and cutting materials [diamond, boron carbide, silicon carbide (carborundum), aluminum oxide], coatings, flame retardants, building and construction materials (window glass, ...
Inorganic Polymers
In: Forecasting and Planning for Volcanic Hazards, Risks, and Disasters Vol 2. Papale P (ed) Elsevier Lavallée Y, Hess K-U, Cordonnier B, Dingwell DB (2007) Non-Newtonian rheological law for highly crystalline dome lavas.
In comparing inorganic polymer glass-forming substances with typical organic polymer glass-formers two significant differences have to be mentioned: (i.) In most cases the stiffness of the inorganic chains like –Se – Se – Se–, ...
Silverstein, R. M., Bassler, G. C. (1997): Spectrometric Identification of Organic Compounds, 6th ed., Wiley, New York. Smith, C. (2002): Pocket Handbook of Polymers and Other Macromolecules Instrumental Techniques for Analytical ...
Out, G. J. J.; Turetskii, A. A.; Moller, M. Makromol. Chem., Rapid Commun. 1995, 16, 107–112. Out, G. J. J.; Schlossels, F.; Turetskii, A. A.; Moller, M. Makromol. Chem. Phys. 1995, 196, 2035–2046. Turetskii, A. A.; Out, G. J. J.; Klok, ...
Current LEDs are encapsulated by organic polymers or silicones, which are limited by heat, UV exposure, and gas permeability ... Inorganic Polymeric Glasses. ... Variation in P–O bonding in phosphate glass – a neutron diffraction study.
From the preceding discussion it appears that purely inorganic polymers are rarely encountered. ... there are in fact a number of common materials which fulfil the requirements; these include the silicate minerals and silicate glasses.