Preparation of poly (bis[2-(methacryloyloxy)ethyl] phosphate) crosslinked polymer brushes on Poly(vinylidene fluoride) nanofibers

Oktay B., Ugur M. H., Kayaman Apohan N.

MATERIALS CHEMISTRY AND PHYSICS, cilt.217, ss.168-174, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 217
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.matchemphys.2018.06.044
  • Dergi Adı: MATERIALS CHEMISTRY AND PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.168-174
  • Anahtar Kelimeler: Surface-initiated ATRP, PVDF nanofiber, Ionic conductivity, Li-ion battery, LITHIUM-ION BATTERIES, OVERCHARGE PROTECTION, ELECTROLYTE MEMBRANE, CARBON NANOTUBES, FIBER MEMBRANES, PVDF MEMBRANE, ATRP, SURFACE, SAFETY, NANOCOMPOSITES
  • Marmara Üniversitesi Adresli: Evet

Özet

In this study, a surface modification of poly(vinylidene fluoride) (PVDF) nanofibers by atom transfer radical polymerization (ATRP) was developed to form bis[2-(methacryloyloxy)ethyl] phosphate (BMEP) crosslinked polymer brushes grafted on nanofibers for application in rechargeable lithium batteries. BMEP was polymerized by using a "grafting-from" technique on the PVDF nanofiber surface by direct initiation. FT-IR (Fourier transform infrared) spectroscopy and SEM (scanning electron microscopy) confirmed the formation of BMEP polymer brushes. Morphological analysis showed that the diameter of the nanofibers was increased by surface grafting. Nevertheless, the characteristic nanofibrillar structure was not changed significantly by ATRP. The thermal properties of the nanofibers were investigated by TGA (thermogravimetric analysis). The results showed that the thermo-oxidative stability of the nanofibers increased with the BMEP content. The conductivities of Li-salts containing nanofibers were in the range 3.41 x 10(-3) S cm(-1) to 8.26 x 10(-4) S cm(-1).