Al~tract--The rate of anionic polymerization of bulk propylene oxide catalysed by potassium alkoxide in the presence of 18-crown-6 ether was followed dilatometrically. Rate constants were obtained at 40, 50 and 60 ° over a range of crown ether concentrations, so allowing calculation of activation en
Use of crown ether in the anionic polymerization of propylene oxide—2. Molecular weight and molecular weight distribution
✍ Scribed by Jifeng Ding; Frank Heatley; Colin Price; Colin Booth
- Book ID
- 107754346
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 390 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0014-3057
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The molecular weight (MW) and the molecular weight distribution (MWD) of polyethylene (PE) prepared with various metallocene catalysts were investigated. The weight‐average molecular weight (__M__~w~) of PE prepared with dicyclopentadienyltitanium dichloride/aluminoxane (Cp~2~TiCl~2~/MA
Molecular weight distribution has been investigated for polycaproamide obtained in lowtemperature, anionic polymerization of caprolactam in the presence of the sodium salt of caprolactam and carbon dioxide in solvent; fractionation has been performed at 25 ° using phenol-tetrachloroethane as solvent