EFFICIENCY OF THE PRUITT-BAGGETT CATALYST IN THE STEREOREGULAR POLYMERIZATION OF PROPYLENE-OXIDE

Authors
COLAK N
Citation
N. Colak, EFFICIENCY OF THE PRUITT-BAGGETT CATALYST IN THE STEREOREGULAR POLYMERIZATION OF PROPYLENE-OXIDE, Polymer-plastics technology and engineering, 35(2), 1996, pp. 317-325
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Polymer-plastics technology and engineering → ACNP
ISSN journal
03602559
Volume
35
Issue
2
Year of publication
1996
Pages
317 - 325
Database
ISI
SICI code
0360-2559(1996)35:2<317:EOTPCI>2.0.ZU;2-8
Abstract
Partially stereoregular poly(propylene oxide) (PPO), samples synthesiz ed by the Pruitt-Baggett Catalyst (PBC) were fractionated at 25 degree s C and 50 degrees C from acetone by adding small portions of water. A t 25 degrees C mainly solid-liquid phase separations took place. On th e other hand, at 50 degrees C, liquid-liquid phase separations were ob served, Thus, it was possible to fractionate PPO on the basis of molec ular weight. From the molecular weight measurements, it was concluded that 1 molecule of high PPO was formed for less than 10 Fe atoms.