Post-polymerisation modification of poly(3-hydroxybutyrate) (PHB) using thiol–ene and phosphine addition

Abstract

As we face the issues associated with fossil resource-based polymers and their environmental impact after their useful life, polyesters become more important as “greener” alternatives due to their potential hydrolytic...

Phosphorus-Containing Stereocontrolled Polyhydroxyalkanoates by Yttrium-Mediated Ring-Opening Copolymerization of B-Lactones

“…PHAs bearing phosphate pendent groups were also prepared via postpolymerization metathesis of copolymers prepared by ROP of lactide with β-heptenolactone; the pendent alkene groups in the copolymers underwent cross-metathesis with allyl dimethyl phosphate using Hoveyda-Grubbs second-generation catalyst [32]. Recently, the postpolymerization modification by thermal addition of a phosphine (P (nBu) 3 , PMe 2 Ph) on the crotonate end-groups of a poly(3hydroxybutyrate) (PHB) prepared by ROP of BPL Me with a guanidine organocatalyst (TBD) was reported to provide α-phosphonium endfunctionalized PHBs displaying surfactant properties [33]. Yet, to our knowledge, there is no example of a direct preparation of a PHA bearing phosphorus functional moieties by (co)polymerization of an adequate Pfunctionalized (co)monomer [34].…”