Fabrication of thermo-responsive PNIPAAm-g-ETFE for cell culture dishes by pre-irradiation grafting

Yumi Yamahara*, Naotsugu Nagasawa, Mitsumasa Taguchi, Akihiro Oshima, Masakazu Washio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Thermo-responsive templates for the cell cultivation based on Poly(tetrafluoroethylene-co-ethylene) (ETFE) were fabricated by pre-irradiation grafting of N-isoproplyacrylamide (NIPAAm) monomer by electron beam (EB) irradiation under nitrogen gas atmosphere at room temperature, and their characteristic properties were studied. The detachment of cultured HeLa cells from fabricated thermo-responsive templates were attempted. Furthermore, the reaction mechanism is proposed using ESR spectroscopy and FT-IR spectroscopy. It is confirmed that the cultured HeLa cells were detached from fabricated thermo-responsive templates at 20 °C. Water contact angle analysis indicated that obtained templates had thermo-response around 30 °C. It is suggested that the grafted polymer chains would mainly react with peroxy radicals (–CF2–CF(OO・)–) on tetrafluoroethylene unit in ETFE.

Original languageEnglish
Pages (from-to)88-93
Number of pages6
JournalRadiation Physics and Chemistry
Publication statusPublished - 2018 Jan


  • Cell culture dishes
  • ETFE
  • Pre-irradiation grafting
  • Thermo-responsive

ASJC Scopus subject areas

  • Radiation


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