Preparation and characterization of polypyrrole/dextran sulphate composite: its electrochemical and thermal behaviors

YALÇINKAYA S., Demirbilek C., ÖZDEMİR DİNÇ C.

Polymer Bulletin, cilt.72, sa.11, ss.2843-2855, 2015 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 72 Sayı: 11
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s00289-015-1439-8
  • Dergi Adı: Polymer Bulletin
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2843-2855
  • Anahtar Kelimeler: Biomaterials, Chemical synthesis, Composite materials, Dextran sulphate, Polypyrrole
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

Polypyrrole/dextran sulphate (PPy/Dx-SO4) composite was synthesized in 1 M HCl medium by chemical polymerization method. The synthesized composite was characterized using 1H-NMR, UV–Vis, FT-IR, SEM micrographs, cyclic voltammetry, TG–DTA and viscosity measurements. The SEM micrographs were clearly indicated that PPy, Dx-SO4 and PPy/Dx-SO4 composite have different morphology. The composite architecture is also seen alike as globular and agglomerate particles. The composite has better thermal stability than Dx-SO4. The results of the solubility studies indicated that the composite partially dissolved in DMSO, DMF, and NMP. Additionally, the composite was more soluble in these solvents than PPy, providing technological usefulness. The electrochemical studies showed that PPy/Dx-SO4 composite has low electrical conductivity, but it has good electrochemical stability than PPy.