SYNTHESIS OF HYBRID LIQUID-CRYSTALLINE BLOCK-COPOLYMERS BY COMBINATION OF CATIONIC OR PROMOTED CATIONIC AND FREE-RADICAL POLYMERIZATIONS

SERHATLI I., GALLI G., YAGCI Y., CHIELLINI E.

POLYMER BULLETIN, cilt.34, ss.539-546, 1995 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1007/bf00423349
  • Dergi Adı: POLYMER BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.539-546
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

The synthesis of two new classes of liquid crystalline block copolymers (1-5) by a two-step combination of cationic and free-radical polymerizations is described. An azomacroinitiator was prepared first by cationic polymerization of tetrahydrofuran or promoted cationic polymerization of cyclohexene oxide, which was then used to initiate the free-radical polymerization of an acrylate monomer containing a variously substituted biphenyl mesogenic group. The semicrystalline and liquid crystalline blocks were essentially microphase-separated and gave rise to different thermotropic mesophases.