Abstract:
Benzene has been carried out to
examine whether it is possible for it to be fused togotller
,I so as to produce TPlaner sheets of arum"tic rings to form
graphite. In the initial stages ot nucleation and growth
a liquid-state mesophase of optical anisotropy appears as
spherules as ill all graphitiz",bl" organic_ materials. With
the progress of carbonisattQfl. the growing mesophase
c;pherules coalesce and.chauge ill sl1"pe ill [o,ming .elatively
complex bulk mesophase. Rail,ected pola.rized-ligl,t micrography
using cross polari:<ers has been employed to investigate
the microstructure of carbonaceous meso phase. A thermal
alla.!ys~s of tho ,;ample has been unde.taken to locate the
temperature i£lterva.!s of mesophese forma.tion. A particle
size analysis has Deen carried OLIt LI.s~Jlg polariLed_liglJt
microscopy in order to find out the size of the spherules
at different heat-treatment temperatures.
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