Preparation of conductive polybenzoxazines by oxidative polymerization

KISKAN B., YAGCI Y., Sahmetlioglu E., TOPPARE L.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.45, no.6, pp.999-1006, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 6
  • Publication Date: 2007
  • Doi Number: 10.1002/pola.21848
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.999-1006
  • Keywords: conducting polymer, curing of polymers, oxidative polymerization, polyaromatics, polybenzoxazine, thermal curing, thiophene, RING-OPENING POLYMERIZATION, BENZOXAZINE, COPOLYMERS, POLYTHIOPHENE, POLYPYRROLE, POLYSTYRENE, BEHAVIOR, BLENDS
  • Kayseri University Affiliated: No


precursors were prepared by oxidative polymerization 3-phenyl-3,4-dihydro-2H-benzo[e][1,3] oxazine (P-a) alone and in the presence of thiophene (Th) with ceric ammonium nitrate in acetonitrile. The structure of the precursors was confirmed by FTIR, H-1 NMR, and DSC measurements, indicating the presence of a cyclic benzoxazine structure, together with small but varying amount of a ring opened phenolic structure. The resulting polymers exhibit conductivities around 10(-2) S cm(-1) and undergo thermal curing at various temperatures. Attempts to copolymerize P-a with another electroactive monomer, pyrrole (Py), by a similar redox process were unsuccessful, which was attributed to the unfavourable oxidation potential of Py. The cured products exhibited high thermal stability but lower conductivity, than those of the precursors. (c) 2006 Wiley Periodicals, Inc.