Aqueous lubrication of poly(etheretherketone) via surface-initiated polymerization of electrolyte monomers

Patcharida Chouwatat, Tomoyasu Hirai, Keiko Higaki, Yuji Higaki, Hung Jue Sue, Atsushi Takahara

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Poly(etheretherketone) (PEEK) substrate surface was modified with charged cationic poly(2-(methacryloyloxy) ethyltrimethylammonium chloride) (PMTAC) and anionic poly(3-sulfopropyl methacrylate potassium salt) (PSPMK) polymer brushes through surface-initiated radical polymerization triggered by UV light exposure of benzophenone groups in PEEK backbone as an initiator. After extensive UV light exposure, the PEEK surface was covered with grafted polyelectrolyte chains and exhibited swollen polyelectrolyte brushes with high roughness under water, indicating high graft density and wide molecular weight distributions of PMTAC and PSPMK brushes. The hydrated polyelectrolyte brushes on PEEK surface induce significant air bubble repellency in water. Thus, thickening of swollen polyelectrolyte brushes dramatically reduces the friction coefficient of PEEK surface under a wet condition.

Original languageEnglish
Pages (from-to)549-555
Number of pages7
Publication statusPublished - May 5 2017

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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