Abstract
High-molecular weight polyesters were produced via the ring-opening polymerization of cyclic oligomers which were produced by the condensation of diols and dicarboxylates by lipase in a diluted toluene solution. Thus, dimethyl fumarate, maleate and succinate with 1,6-hexanediol were reacted forming cyclic oligomers in diluted toluene solution by Candida antarctica lipase. The cyclic oligomer was readily polymerized by the same lipase in more concentrated solution to produce a high-molecular weight polyester. On the other hand, molecular weights of polyesters produced by the direct polycondensation of diols and dicarboxylates decreased considerably when compared to those produced by the ring-opening polymerization.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - 2005 Dec 1 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005 May 25 → 2005 May 27 |
Other
| Other | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country/Territory | Japan |
| City | Yokohama |
| Period | 05/5/25 → 05/5/27 |
Keywords
- Cyclic oligomer
- Lipase
- Polymerization
- Unsaturated polyester
ASJC Scopus subject areas
- Engineering(all)