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Glass Fibers with Oriented Chain Molecules
Author(s) -
GOLDSTEIN MARTIN,
DAVIES T. H.
Publication year - 1955
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1955.tb14935.x
Subject(s) - metaphosphate , birefringence , polymer , molecule , materials science , viscoelasticity , sodium , chain (unit) , diffraction , linear polymer , monomer , silicon , polymer chemistry , chemical engineering , composite material , chemistry , organic chemistry , optics , phosphate , physics , astronomy , metallurgy , engineering
The concept of glass as a polymer of silicon, phosphorus, or other glassforming atoms connected by oxygen atoms suggests that fibers with oriented linear chains may be prepared. Previous attempts to demonstrate such orientation have failed, however, with glasses of the usual compositions. The composition in which linear chains seem most likely to occur is that of the “meta” salts in which each glassformer is bound, on the average, to two others through oxygen atoms. Under drawing conditions indicated by the theory of viscoelastic properties of high polymers, fibers of sodium metaphosphate glass have been prepared that show birefringence and give X‐ray diffraction patterns similar to those of organic fibers with oriented chain molecules. Under analogous treatment sodium metasilicate failed to give such effects.