Characterization of the Phases in Centrifuged Mesophase Pitches
- 1 January 1986
- journal article
- liquid crystals
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 132 (1-2), 65-79
- https://doi.org/10.1080/00268948608079529
Abstract
Mesophase pitches derived from petroleum, coal tar, and naphthalene have been separated into their isotropic and anisotropic phases by high-temperature centrifugation. The separated phases have been characterized by determining their elemental constitutions, densities, solubilities, glass transition temperatures, molecular weight distributions, and X-ray and EPR spectra. The data demonstrate the sensitivity of mesophase formation in carbonaceous pitches to molecular structure and distribution.Keywords
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