The effect of long-term ambient aging on the mechanical properties of conducting polysiloxane-polypyrrole graft copolymers


Biran C., Toppare L. , Tincer T., Yagci Y., Harabagiu V.

CHEMICAL ENGINEERING COMMUNICATIONS, cilt.190, ss.823-830, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 190
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1080/00986440390207422
  • Dergi Adı: CHEMICAL ENGINEERING COMMUNICATIONS
  • Sayfa Sayıları: ss.823-830

Özet

The mechanical behavior of conducting polysiloxane-polypyrrole graft copolymers has been investigated as a function of ambient oxidative aging period. Graft copolymers of N-pyrrolyl-terminated polydimethylsiloxane (SPPy) with pyrrole were synthesized electrochemically at constant potential by using p -toluene sulfonic acid as the supporting electrolyte. Mechanical tests were performed on both unwashed and dichloromethane -washed copolymers after aging. An initial decrease followed by an increase in the tensile strength and strain values was observed with aging. The conductivities and mechanical properties of the films were determined to remain almost unchanged after 6 months of aging at about 46 S/cm.