Acceleration of petroleum based mesophase pitch formation by PET (polyethylene terephthalate) additive

Ji Hong Kim, Yun Jeong Choi, Seung Eun Lee, Ji Sun Im, Ki Bong Lee, Byong Chol Bai

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


To improve mesophase formation in petroleum-based pitch, the PET (polyethylene terephthalate) additive reaction was studied. PFO (pyrolysis fuel oil) was used to prepare the petroleum pitch, and PET was added at a weight ratio of 0.33–1.50%. The chemical structure of PET-added pitch was analyzed by Fourier transform infrared spectroscopy, and the thermal properties were characterized by thermogravimetric analysis and the softening point method. Added PET provides oxygen during the pitch synthesis reaction, and the polycondensation of the pitch was accelerated by oxygen crosslinking. Thus, the softening point and carbonization value increased with the amount of PET added; moreover, the mesophase content increased by more than three times with 0.33 wt% PET addition. However, at more than 0.67 wt% PET addition, the fluidity rapidly decreased, so the mesophase spheres decreased in size and were independently distributed.

Original languageEnglish
Pages (from-to)476-481
Number of pages6
JournalJournal of Industrial and Engineering Chemistry
Publication statusPublished - 2021 Jan 25

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20181110200070 , Functional porous composite for mitigating air pollutant by using coal combustion products) and also supported by the Technology Innovation Program ( 20006696 , Development of isotropic graphite block for semiconductor process) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

Publisher Copyright:
© 2020 The Korean Society of Industrial and Engineering Chemistry


  • Mesophase pitch
  • Oxygen cross-link
  • Petroleum pitch
  • Petroleum residue
  • Polyethylene terephthalate

ASJC Scopus subject areas

  • General Chemical Engineering


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