THE EFFECT OF ULTRASOUND IN ETHYL-METHACRYLATE POLYMERIZATION AND DEPOLYMERIZATION REACTIONS

EROLAN N., ARISAN F., CATALGILGIZ H. H.

ANGEWANDTE MAKROMOLEKULARE CHEMIE, cilt.226, ss.53-57, 1995 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 226
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1002/apmc.1995.052260106
  • Dergi Adı: ANGEWANDTE MAKROMOLEKULARE CHEMIE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.53-57
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

The effect of ultrasound in ethyl methacrylate polymerization and depolymerization and the chain termination mechanism for ethyl methacrylate have been studied. Polymerization conversion at 60 degrees C did not depend on energy (80 W) and frequency (35 kHz) of ultrasound applied. In ultrasound depolymerization studies at 20 degrees C the governing termination mechanism was found to be disproportionation and the lower limiting molecular weight was M(n) = 500000.