Ring-Opening polymerization of ε-caprolactone using novel tin(ll) alkoxide initiators
Two novel tin(II) alkoxides, namely: tin(II) hexoxide, Sn (OC 6H13)2 and tin(II) octoxide, Sn(OC 8H&17)2, have been synthesized for use as coordination-insertion initiators in the bulk ring-opening polymerization of ε-caprolactone. The kinetics of the polymerization reactions were studied at 140...
Saved in:
| Main Authors: | , , , |
|---|---|
| 格式: | Book Series |
| 出版: |
2018
|
| 主題: | |
| 在線閱讀: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=62949244187&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/60378 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Chiang Mai University |
| 總結: | Two novel tin(II) alkoxides, namely: tin(II) hexoxide, Sn (OC 6H13)2 and tin(II) octoxide, Sn(OC 8H&17)2, have been synthesized for use as coordination-insertion initiators in the bulk ring-opening polymerization of ε-caprolactone. The kinetics of the polymerization reactions were studied at 140 °C by dilatometry. It was found that both alkoxides were slow to dissolve in the ε-caprolactone monomer due to their molecular aggregation in the solid state. As a result, the slow solubilization of the initiators gave rise to deviations from the expected first-order kinetics. Instead, the kinetic results adhered more closely to zero-order kinetics with apparent zero-order rate constants k0 of 6.58 × 10-1 and 4.63 × 10-2 mol l-1 min-1 for the hexoxide and octoxide respectively. © 2008 Trans Tech Publications, Switzerland. |
|---|