2 research outputs found
Synthesis and Functionalization of Thiol-Reactive Biodegradable Polymers
Synthesis and Functionalization
of Thiol-Reactive Biodegradable Polymer
Poly(ω-pentadecalactone)‑<i>b</i>‑poly(l‑lactide) Block Copolymers via Organic-Catalyzed Ring Opening Polymerization and Potential Applications
PolyÂ(pentadecalactone)-<i>b</i>-polyÂ(l-lactide)
(PPDL-<i>b</i>-PLLA) diblock copolymers were prepared via
the organic catalyzed ring-opening polymerization (ROP) of l-lactide (l-LA) from PPDL macroinitiators using either 1,8-diazabicyclo[5.4.0]Âundec-7-ene
(DBU) or 1,5,7-triazabicyclo[4.4.0]Âdec-5-ene (TBD). Synthesis of PLLA
blocks targeting degrees of polymerization (DP) up to 500 were found
to yield diblock copolymers with crystalline PPDL and PLLA segments
when TBD was used as the catalyst. The synthesis was further improved
in a one-pot, two-step process using the same TBD catalyst for the
synthesis of both segments. The application of these diblock copolymers
as a compatibilizing agents resulted in homogenization of a biobased
PLLA/polyÂ(ω-hydroxytetradecanoate) (90:10) blend upon a melt-process,
yielding enhanced material properties