ma9b02373_si_001.pdf (1.89 MB)
Kinetic and Mechanistic Study of Heterogeneous Double Metal Cyanide-Catalyzed Ring-Opening Multibranching Polymerization of Glycidol
Version 2 2020-03-12, 16:37
Version 1 2020-03-12, 15:13
journal contribution
posted on 2020-03-12, 16:37 authored by Chinh
Hoang Tran, Min Woong Lee, Sun A Kim, Han Byul Jang, Il KimPolyglycidols of tunable degree of branching (DB) have been synthesized
via ring-opening multibranching polymerization (ROMBP) of glycidol
in the absence of any initiators using heterogeneous double metal
cyanide (DMC) catalysts. Semi-branched polyglycidols of low DB (less
than 0.3) are obtained using simple solvent-free batch polymerizations,
whereas hyperbranched analogues of high DB (more than 0.5) are achieved
employing semi-batch (or slow monomer addition) polymerizations. The
rate of DMC-catalyzed ROMBPs of glycidol shows the first-order dependences
on monomer and catalyst concentrations, suggesting that the ROMBPs
proceed via a coordinative mechanism. The formation of propagating
species and the resultant microstructural units are clarified using
a conversion versus time analysis in the NMR-scale.
History
Usage metrics
Categories
Keywords
catalyst concentrationsmetal cyanideDBmonomer additionpropagating speciestunable degreemicrostructural unitstime analysisring-opening multibranching polymerizationSemi-branched polyglycidolsMechanistic StudyDMC-catalyzed ROMBPshyperbranched analoguesHeterogeneous Double Metal Cyanide-Catalyzed Ring-Opening Multibranching Polymerizationsolvent-free batch polymerizationscoordinative mechanismGlycidol Polyglycidols
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC