Aqueous dispersion and tuning surface charges of polytetrafluoroethylene particles by bioinspired polydopamine-polyethyleneimine coating via one-step method

Manjit Singh Grewal, Hiroya Abe, Yasutaka Matsuo, Hiroshi Yabu

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a surface modification of poorly dispersive polytetrafluoroethylene (PTFE) particles via bioinspired polydopamine-polyethyleneimine (PDA-PEI) which conferred PTFE particles a uniform dispersion in aqueous medium. With increasing dopamine concentration in the reaction solution, dispersity of PTFE particles improved and the surface charges of particles changed from negative to positive due to an increase of surface coverage of PDA-PEI layers. Simplicity of the method here outlines an attractive route for surface modification of inert surfaces useful for large-scale applications.

Original languageEnglish
Article number210582
JournalRoyal Society Open Science
Volume8
Issue number8
DOIs
Publication statusPublished - 2021 Aug

Keywords

  • Nanoparticles
  • Polydopamine
  • Polyethyleneimine
  • Polytetrafluoroethylene
  • Surface charges

ASJC Scopus subject areas

  • General

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