Fractionation of partially stereoregular poly(propylene oxide) from acetonitrile solution


Colak N., Akgün A.

Acta Polymerica, vol.47, no.8, pp.365-368, 1996 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 8
  • Publication Date: 1996
  • Doi Number: 10.1002/actp.1996.010470809
  • Journal Name: Acta Polymerica
  • Journal Indexes: Scopus
  • Page Numbers: pp.365-368
  • Hatay Mustafa Kemal University Affiliated: No

Abstract

Partially stereoregularpoly(propylene oxide) (PPO) samples synthesized using Pruitt-Bagett catalysts (PBC) were fractionated at 40 °C and 70 °C from acetonitrile solution by adding small portions of water. The formed polymer-rich phases were clear liquids except the first three fractions obtained at 40 °C; those were solids. The fractions were characterized with their viscosity average molecular masses and melting points. Results showed that the procedure described in the present report fractionates partially stereoregular PPO on the basis of molecular weight, independent of their tacticity. © VCH Verlagsgesellschaft mbH, , 1996.