PREPARATION OF BLOCK AND GRAFT-COPOLYMERS BY PEROXYCARBAMATES

UYANIK N., YILDIRIM H., KIZILCAN N., AKAR A.

ANGEWANDTE MAKROMOLEKULARE CHEMIE, cilt.191, ss.1-13, 1991 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 191
  • Basım Tarihi: 1991
  • Doi Numarası: 10.1002/apmc.1991.051910101
  • Dergi Adı: ANGEWANDTE MAKROMOLEKULARE CHEMIE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-13
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

Block copolymers of cyclohexanone-formaldehyde resin (CF-resin) and polystyrene and graft copolymers of styrene on ethyl cellulose, respectively, were prepared via peroxycarbamates. NCO/OH ratio was the important parameter during preparation of polymeric peroxycarbamates from prepolymeric isocyanate-terminated peroxycarbamates and CF-resin. Cross-linked copolymers were produced if NCO/OH ratio was above 2:9. Ethyl cellulose with low hydroxy value was used as hydroxy compound for the preparation of peroxycarbamate. About one of every two anhydroglucose units of ethyl cellulose was grafted with polystyrene.