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

YILMAZ O., USANMAZ A., ALYURUK K.

EUROPEAN POLYMER JOURNAL, vol.28, no.11, pp.1351-1356, 1992 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 11
  • Publication Date: 1992
  • Doi Number: 10.1016/0014-3057(92)90275-7
  • Journal Name: EUROPEAN POLYMER JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1351-1356
  • Middle East Technical University Affiliated: No

Abstract

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.