Glycol-functionalized ionic liquids for high-temperature enzymatic ring-opening polymerization.

ABSTRACT: Enzymatic ring-opening polymerization (ROP) is a benign method for preparing polyesters, such as polylactides and other polylactones. These reactions are typically carried out at relatively high temperatures (60-130 °C), however, there is a deficiency of enzyme-compatible solvents for such thermally-demanding biocatalytic processes. In this study, we have prepared a series of short-chained glycol-grafted ionic liquids (ILs) based on a phosphonium, imidazolium, pyridinium, ammonium, or piperidinium cationic headgroup. Most of these glycol-grafted ILs exhibit relatively low dynamic viscosities (33-123 mPa s at 30 °C), coupled with excellent short-term thermal stabilities with decomposition temperatures (T _dcp) in the 318-403 °C range. Significantly, the long-term thermal st

SUBMITTER: Zhao H 

PROVIDER: S-EPMC9088744 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature