Abstracts 147 wedge disclinations (+?T, -or, t2r, -274 at the free surface of carbonaceous mesophase have been observed dynamically on a hot stage. The response of the disclinations to mechanical deformation is illustrated and discussed. key role in the depolymerization and subsequent reaction of c
Study of the extrusion of a typical pitch mesophase and the nature of the cokes derived therefrom
β Scribed by John Conway Jenkins; Gwyn Morgan Jenkins
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 852 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0016-2361
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β¦ Synopsis
It is shown that the mesomorphic state of a typical pitch (Ashland 240), immediately prior to coking, can be extruded to produce a specified coke morphology.
The rheology of the extrudate, the degree of preferred orientation induced and the nature of the cokes derived therefrom vary enormously depending on the thermal history of the pyrolysate.
The extrudates and derived cokes are characterized by dilatometry and X-ray diffraction.
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