A MECHANISTIC STUDY ON THE POLYMERIZATION OF N-BUTYL ISOCYANATE BY PRUITT-BAGGETT ADDUCT


YILMAZ O., USANMAZ A. , ALYURUK K.

EUROPEAN POLYMER JOURNAL, cilt.28, ss.1351-1356, 1992 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 28 Konu: 11
  • Basım Tarihi: 1992
  • Doi Numarası: 10.1016/0014-3057(92)90275-7
  • Dergi Adı: EUROPEAN POLYMER JOURNAL
  • Sayfa Sayıları: ss.1351-1356

Özet

The mechanism of the polymerization of n-butyl isocyanate by the Pruitt-Baggett adduct (PBA) was studied; on the basis of the experimental evidences, a coordinated mechanism was proposed and verified. This mechanism considers a monatomic active site, which is the Fe atom of PBA with Lewis acid character. The N atom of the isocyanate monomer is coordinated by the Fe atom and the resultant positive charge is transmitted to another N atom which covalently binds the growing chain to the active centre. Thus the formed ammonium ion is added to the incoming monomer yielding Nylon-1 structure and the active site is regenerated.