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Enhanced mechanical properties and thermal conductivity of polyimide nanocomposites incorporating individualized boron-doped graphene

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2020, 30(4), pp.457-464
  • DOI : 10.1007/s42823-019-00115-y
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 7, 2019
  • Accepted : December 10, 2019
  • Published : August 1, 2020

Ha Yu-Mi 1 Kim Young Nam 1 Kim Young-O 1 sochan 2 Lee Jae-Suk 3 Kim, Jaewook 1 Jung Yong Chae 1

1한국과학기술연구원
2포항공과대학교
3광주과학기술원

Accredited

ABSTRACT

Herein, we report signifcantly enhanced mechanical properties and thermal conductivity of polyimide (PI) by incorporating a small amount (0.01 wt %) of individualized boron-doped high-quality graphene as a fller. The boron-doped expandable graphite (B-EG) was synthesized by mixing boric acid (H3BO4) with expandable graphite (EG) and thermally treating the mixture at 2450 °C for 30 min using a graphite furnace in an argon atmosphere. The boron-doped graphene (B-g) was pre�pared by the solution-phase exfoliation of B-EG with an ultrasonication process, which is a method to obtain individualized graphene as well as few-layer graphene. The PI nanocomposites were prepared using the obtained graphene. The PI nanocom�posites synthesized with high-quality B-graphene (B-g) showed enhanced mechanical properties and thermal conductivity compared to those of pure PI due to the doping efects and strong interfacial interactions between graphene and the PI matrix.

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Total Citation Counts(KCI+WOS) (11) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (12) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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