• 文献标题:   Dispersions of partially reduced graphene oxide in various organic solvents and polymers
  • 文献类型:   Article
  • 作  者:   KIM HM, KIM SG, LEE HS
  • 作者关键词:   graphene oxide, organic solvent, dispersion, methyl ethyl ketone, polymer
  • 出版物名称:   CARBON LETTERS
  • ISSN:   1976-4251 EI 2233-4998
  • 通讯作者地址:   Donga A Univ
  • 被引频次:   2
  • DOI:   10.5714/CL.2017.23.055
  • 出版年:   2017

▎ 摘  要

We report on the dispersion state of partially reduced graphene oxide (PRGO) in organic solvents, namely methyl ethyl ketone, ethyl acetate, methylene chloride, toluene, and xylene, by controlling the carbon to oxygen (C/O) atomic ratio of the PRGOs. A two-phase solvent exchange method is also proposed to transfer PRGO from water to an aprotic solvent, such as methyl ethyl ketone. We achieve relatively good dispersion in aprotic and non-polar solvents by controlling the C/O atomic ratio of the PRGOs and applying the two-phase solvent exchange method. There is an increase in the glass transition temperatures with the dispersion of PRGOs into amorphous polymers, in particular a 4.4 degrees C increase for poly(methyl methacrylate) and 3.0 degrees C increase for polycarbonate. Good dispersion of PRGO in a nonpolar polymer, such as linear low density polyethylene, is also obtained.