Abstract
In order to establish the sustainable chemical recycling process of poly(L-lactic acid)(PLLA) using montmorillonite K5, repolymerizability of lactic acid oligomer (OLLA) was studied with respect to the molecular weight of the regenerated PLLA. OLLA with different Mn was prepared. Then the oligomer was repolymerized by the conventional chemical catalysts to synthesize PLLA. It was confirmed that the Mw of the regenerated PLLA decreased when the Mn of the OLLA increased to greater than 400. On the other hand, the recovery of the PLLA increased with the increasing Mn of the OLLA. These results suggested that the solubility of Sn(Oct)2 towards OLLA affected the Mw of the regenerated PLLA.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - 2006 Dec 1 |
| Event | 55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan Duration: 2006 Sep 20 → 2006 Sep 22 |
Other
| Other | 55th Society of Polymer Science Japan Symposium on Macromolecules |
|---|---|
| Country | Japan |
| City | Toyama |
| Period | 06/9/20 → 06/9/22 |
Fingerprint
Keywords
- Chemical recycling
- Degradation
- Oligomer
- poly (L-lactic acid)
- Repolymerizability
- Solid acid
ASJC Scopus subject areas
- Engineering(all)
Cite this
Tsuneizumi, Y., Yamato, F., Toshima, K., & Matsumura, S. (2006). Repolymerizability of lactic acid oligomers directed towards chemical recycling of poly (lactic acid). Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.