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Sol-Gel derived SrTiO3 and SrZrO3 coatings on SIC and C fibers

Book ID
104275174
Publisher
Elsevier Science
Year
2001
Weight
183 KB
Volume
42
Category
Article
ISSN
0140-6701

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✦ Synopsis

By-products related to fuels NMR spectroscopy.

Structural characterization by elemental analysis, FTIR, and NMR spectroscopy on both vacuum-distilled and air-blown pitches showed that distillation of lighter fractions, reduction of atomic H/C ratio, and dehydrogenation raised their softening points. Structural analysis by NMR showed that asphaltite pitches consist of condensed aromatic rings combined with methylene bridges and heterocyclic groups and substituted with alkyl and naphthenic groups. Aspbaltite pitches, which were prepared by solvent extraction (HI-BS) and vacuum distillation (AVD3), resulted in very good and medium spinnable green fibres, respectively. Scanning electron microscope analysis was used to study the morphology of the stabilized fibres. 00100236

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