Influence of PMSA-based polymer on the settling velocity of CNT in Aqueous Media

Naoyuki Nishimura, Shin Ichi Takeda, Takashi Teranishi, Hidetaka Hayashi, Naoto Saito, Akira Kishimoto

Research output: Contribution to journalArticlepeer-review


The preparation of a stable suspension dispersing carbon nanotube (CNT) in aqueous media using polystyrene maleic acid (PSMA)-based polymer as surfactant was attempted to be subsequently used in the fabrication of high-performance ceramic matrix composites. Settling velocity under centrifugation analysis was experimentally evaluated as one of the stability criteria of the dispersion and pulsed nuclear magnetic resonance was used to evaluate the amount of adsorbed molecules. The settling velocity decreased considerably with the PSMA concentration up to the saturation at around 7 mass%, then further decreased gradually with PSMA. The former was thought to be based on the dissociation of CNT agglomerate and the latter would be attributed to the surfactant-induced network structure formed in the aqueous media.

Original languageEnglish
Pages (from-to)861-865
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number10
Publication statusPublished - Sept 2016


  • Adsorption
  • Dispersion
  • Multi-Walled Carbon Nanotube
  • Orientation
  • Surfactant

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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