Preparation of poly(o-toluidine)/polyacrylonitrile composite fibres using CrO3

Üçhöyük C., KARAKIŞLA M., SAÇAK M.

Indian Journal of Fibre and Textile Research, cilt.37, sa.2, ss.120-126, 2012 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37 Sayı: 2
  • Basım Tarihi: 2012
  • Dergi Adı: Indian Journal of Fibre and Textile Research
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.120-126
  • Anahtar Kelimeler: Composite, Conducting fibre, CrO3 oxidant, Poly(o-toluidine), Polyacrylonitrile
  • Ankara Üniversitesi Adresli: Evet

Özet

Poly(o-toluidine) (POT) and polyacrylonitrile (PAN) fibres have been used to prepare conducting composite fibres by in situ chemical polymerization using CrO3 as oxidant. The POT content and surface resistivity of POT/PAN composite fibres have been systematically evaluated as a function of the polymerization temperature and time, types of oxidant and dopant, and concentrations of monomer, oxidant and dopant. At the polymerization carried out at 30 °C for 4 h by 0.125 M o-toluidine, 0.08 M CrO3 and 1.2 M HCl, the composite fibres having the highest POT content (about 2.3 %) and the lowest surface resistivity (about 0.12 Mohm/cm2) are obtained. Surface resistivity measurements together with FTIR, TGA and SEM techniques have been used for the characterization of composite fibres prepared. Furthermore, the mechanical properties of composite such as tensile strength and elongation-at-break are also measured. SEM images show that the surface of fibre is coated by POT with a flaky shape and there are accumulation of large and small POT particles at some regions.