GRAFTING OF ACRYLONITRILE TO POLY(STYRENE-CO-ACRYLONITRILE) BY TRANSFORMATION WITH A TITANIUM CATALYST


MENCELOGLU Y., GUNGOR A., BAYSAL B.

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.192, sa.4, ss.847-855, 1991 (SCI İndekslerine Giren Dergi) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 192 Konu: 4
  • Basım Tarihi: 1991
  • Dergi Adı: MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Sayfa Sayıları: ss.847-855

Özet

Poly(styrene-co-acrylonitrile)-graft-polyacrylonitrile graft copolymers were prepared using a mixed (free-radical/anionic) mechanism technique. For this purpose, poly(styrene-co-acrylonitrile) random copolymers which contain different amounts of acrylonitrile segments were regarded as saturated high-molecular-weight nitrile compounds and were allowed to react with tetrakis(dimethylamino)titanium. By this treatment pendant nitrile groups were transformed to organometallic active sites. These active groups lead to the polymerization of acrylonitrile via an anionic insertion process. Polyacrylonitrile grafts were grown on the poly(styrene-co-acrylonitrile) backbone.