본문 바로가기
  • Home

In situ observation of mesophase transformation behaviour and mechanistic analysis in β-resin

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(1), pp.51-63
  • DOI : 10.1007/s42823-023-00643-8
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : August 28, 2023
  • Accepted : November 4, 2023
  • Published : February 1, 2024

Liu Ben 1 Yan Xi 1 Tao Zechao 1 Li Xiangfen 1 Lei Shiwen 1 Zhang Dongqing 1 Yang Zonghe 2 Liu Zhanjun 2

1중국 태원시 중국과학원 석탄화학연구소
2중국 베이징 중국과학원 재료과학 및 광전자 공학 센터

Accredited

ABSTRACT

β-Resin was extracted by solvent separation of refined coal tar pitch. Several analytical methods revealed that β-resin had a better aromatic plane packing structure and a higher number of carbon residues, making it ideal for mesophase transformation. The mesophase transformation process of β-resin (the formation of liquid-crystalline spheres, the growth of mesophase spheres, and the coalescence and disintegration of mesophase spheres) was observed in situ using a polarizing microscope with a hot stage. Moreover, the mesophase transformation mechanism of β-resin was investigated at each transformation stage. The mesophase content and mesophase transformation kinetics were analyzed based on the area method and quinoline insoluble (QI) substitution method. Both methods revealed changes in the mesophase content of β-resin. However, the test results of the two methods were slightly different at the initial stage of mesophase transformation and tended to be consistent during the later stage.

Citation status

* References for papers published after 2022 are currently being built.