Products Cited in Publications Worldwide Biorenewable Circularity in Polydiketoenamine Plastics

Biorenewable Circularity in Polydiketoenamine Plastics

Jeremy Demarteau; Benjamin Cousineau; Zilong Wang; Baishakhi Bose; Seokjung Cheong; Guangxu Lan; Nawa Baral; Simon Teat; Corinne Scown; Jay Keasling; Brett Helms

DOI:

Abstract

While bio-based feedstocks can replace petrochemicals to improve the sustainability of plastics production, it remains a challenge to realize bio-advantaged performance in the usephase along with recycling circularity at end of life. Here, we show that by incorporating the polyketide triacetic acid lactone (TAL) in polydiketoenamines (PDK), we increase the working temperature of these circular plastics, opening the door wider to applications where circularity is urgently needed. By varying the structure of TAL-derived monomers, we observed unexpected odd–even effects, where the number of carbons in the monomer affected both polymer properties and recycling efficiency. We engineered a process for producing bioTAL in Escherichia coli that expresses a non-native polyketoacyl-CoA thiolase, BktB, which enabled bioTAL production from glucose under fed-batch fermentation. We also quantified cost and life cycle greenhouse-gas emissions of bioTAL production, differentiating scenarios by production volume to identify risks and opportunities in biorenewable circularity.

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1,9-Nonanedicarboxylic Acid

A1480111852-04-697%

1,9-Nonanedicarboxylic Acid

66.0/500g

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