Poly(hydroxyalkanoate)s from Waste Biomass: A Combined Chemical–Biological Approach

The synthesis of polyhydroxyalkanoates (PHAs) utilizing methane and alkenoates derived from recycled PHAs is reported. Medium‐chain length (C6 – C9) and short‐chain length (C4 – C5) polyhydroxyalkanoates were catalytically pyrolyzed to generate a range of 2‐alkenoates. The microbial copolymerization...

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Bibliographic Details
Published in:ChemistrySelect (Weinheim) 2016-07, Vol.1 (10), p.2327-2331
Main Authors: Flanagan, James C. A., Myung, Jaewook, Criddle, Craig S., Waymouth, Robert M.
Format: Article
Language:English
Subjects:
biocatalysis
methanotrophs
polyhydroxyalkanoates
recycling
Renewable polymers
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Summary:The synthesis of polyhydroxyalkanoates (PHAs) utilizing methane and alkenoates derived from recycled PHAs is reported. Medium‐chain length (C6 – C9) and short‐chain length (C4 – C5) polyhydroxyalkanoates were catalytically pyrolyzed to generate a range of 2‐alkenoates. The microbial copolymerization of the recovered alkenoates with methane in the presence of methanotrophic bacteria generated poly(3‐hydroxybutyrate) homopolymers from even‐numbered alkenoates and, significantly, poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) copolymers with tunable compositions from odd‐numbered alkenoates. The synthesis of polyhydroxyalkanoates (PHAs) utilizing methane and alkenoates derived from recycled PHAs is reported: catalytic pyrolytic depolymerization of PHA copolymers is combined with the microbial copolymerization of the recovered monomers to generate polyhydroxybutyrate and poly(hydroxybutyrate‐co‐valerate) copolymers via methane‐utilizing methanotrophic bacteria.
ISSN:2365-6549
2365-6549
DOI:10.1002/slct.201600592