石炭系ピッチを加熱噴霧して調製した微粒子の不融化における構造変化
1988 年 67 巻 1 号 p. 43-49
詳細
1988 年 67 巻 1 号 p. 43-49
This investigation was carried out to produce a new and high quality carbon material from atomization of modified coal tar pitch.
As a result, we obtained fine particles of pitch with 10μm average diameter. When this par-ticles were oxidized at 150-350°C with air, they were converted into infusible particles over 250°C. Elementary analysis showed that amounts of oxygen in sample increased with increasing temperature. FT-IR spectroscopy showed that the oxygen containing functional groups were formed in the air oxidation. The above results indicate the conclusion that oxygen induced dehydrogenative polymerization and development of three-dimensional cross-linked structure. Study of polarized light microscopy showed that the oxidation prevented the mesophase develop-ment.
