Unique Base-Initiated Depolymerization of Limonene-Derived
Polycarbonates
Chunliang Li
Rafaël J. Sablong
Rolf A. T. M. van Benthem
Cor E. Koning
10.1021/acsmacrolett.7b00310.s001
https://acs.figshare.com/articles/journal_contribution/Unique_Base-Initiated_Depolymerization_of_Limonene-Derived_Polycarbonates/5112985
The depolymerization
of poly(limonene carbonate) (PLC) initiated
by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) was investigated. The
strong organic base TBD was capable of deprotonating the OH-terminated
PLC, leading to fast degradation via backbiting reactions at high
temperature. An interesting feature of the base-initiated breakdown
of PLC lies in the quantitative depolymerization into the corresponding
initial limonene oxide monomer. This result implies the complete back-to-monomer
recyclability of the fully biobased PLC, which accordingly can be
considered as a really sustainable material. Additionally, the stability
of PLC when exposed to TBD was enhanced by an end-capping reaction,
which further supported the proposed degradation pathway.
2017-06-15 18:18:40
base TBD
Unique Base-Initiated Depolymerization
backbiting reactions
depolymerization
OH-terminated PLC
base-initiated breakdown
Limonene-Derived Polycarbonates
back-to-monomer recyclability
end-capping reaction
biobased PLC
degradation pathway
limonene oxide monomer