✦ LIBER ✦
“Non-ergodic” effect of LiCl, n-BuOLi and tert-BuOLi on the anionic polymerization rate of styrene in tetrahydropyran at 20°C
✍ Scribed by P.L. Huyskens; H. Verheyden; P. Van Lierde
- Book ID
- 104303949
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 888 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0167-7322
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✦ Synopsis
At 20 °C in tetrahydropyran, the addition of a molar proportion r of LiCI, n-BuOLi or tert-BuOLi markedly influences the rate constant kl of the anionic polymerization of PStLi. However the effect depends on the molar concentration P of the "living ends". In the range of P = 10 -5 M a decrease of the rate constant is observed which, at r = 5, falls for tert-BuOLi below 30 % of the initial value. But in the range of P = 10 -3 M the addition of LiCI or n-BuOLi produces on the contrary a marked increase