Chemo-Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating Materials

Hee Taek Kim; Mi Hee Ryu; Ye Jean Jung; Sooyoung Lim; Hye Min Song; Jeyoung Park; Sung Yeon Hwang; Hoe Suk Lee; Young Joo Yeon; Bong Hyun Sung; Uwe T. Bornscheuer; Si Jae Park; Jeong Chan Joo; Dongyeop X. Oh

doi:10.1002/cssc.202100909

Chemo-Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating Materials

Hee Taek Kim, Mi Hee Ryu, Ye Jean Jung, Sooyoung Lim, Hye Min Song, Jeyoung Park, Sung Yeon Hwang, Hoe Suk Lee, Young Joo Yeon, Bong Hyun Sung, Uwe T. Bornscheuer, Si Jae Park, Jeong Chan Joo, Dongyeop X. Oh

Department of Chemical Engineering & Materials Science

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

Chemo-biological upcycling of poly(ethylene terephthalate) (PET) developed in this study includes the following key steps: chemo-enzymatic PET depolymerization, biotransformation of terephthalic acid (TPA) into catechol, and its application as a coating agent. Monomeric units were first produced through PET glycolysis into bis(2-hydroxyethyl) terephthalate (BHET), mono(2-hydroxyethyl) terephthalate (MHET), and PET oligomers, and enzymatic hydrolysis of these glycolyzed products using Bacillus subtilis esterase (Bs2Est). Bs2Est efficiently hydrolyzed glycolyzed products into TPA as a key enzyme for chemo-enzymatic depolymerization. Furthermore, catechol solution produced from TPA via a whole-cell biotransformation (Escherichia coli) could be directly used for functional coating on various substrates after simple cell removal from the culture medium without further purification and water-evaporation. This work demonstrates a proof-of-concept of a PET upcycling strategy via a combination of chemo-biological conversion of PET waste into multifunctional coating materials.

Original language	English
Pages (from-to)	4251-4259
Number of pages	9
Journal	ChemSusChem
Volume	14
Issue number	19
DOIs	https://doi.org/10.1002/cssc.202100909
State	Published - 5 Oct 2021

Bibliographical note

Publisher Copyright:
© 2021 The Authors. ChemSusChem published by Wiley-VCH GmbH

Keywords

biocatalysis
catechol
esterase
poly(ethylene terephthalate)
upcycling

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title = "Chemo-Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating Materials",

abstract = "Chemo-biological upcycling of poly(ethylene terephthalate) (PET) developed in this study includes the following key steps: chemo-enzymatic PET depolymerization, biotransformation of terephthalic acid (TPA) into catechol, and its application as a coating agent. Monomeric units were first produced through PET glycolysis into bis(2-hydroxyethyl) terephthalate (BHET), mono(2-hydroxyethyl) terephthalate (MHET), and PET oligomers, and enzymatic hydrolysis of these glycolyzed products using Bacillus subtilis esterase (Bs2Est). Bs2Est efficiently hydrolyzed glycolyzed products into TPA as a key enzyme for chemo-enzymatic depolymerization. Furthermore, catechol solution produced from TPA via a whole-cell biotransformation (Escherichia coli) could be directly used for functional coating on various substrates after simple cell removal from the culture medium without further purification and water-evaporation. This work demonstrates a proof-of-concept of a PET upcycling strategy via a combination of chemo-biological conversion of PET waste into multifunctional coating materials.",

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author = "Kim, {Hee Taek} and {Hee Ryu}, Mi and Jung, {Ye Jean} and Sooyoung Lim and Song, {Hye Min} and Jeyoung Park and Hwang, {Sung Yeon} and Lee, {Hoe Suk} and Yeon, {Young Joo} and Sung, {Bong Hyun} and Bornscheuer, {Uwe T.} and Park, {Si Jae} and Joo, {Jeong Chan} and Oh, {Dongyeop X.}",

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AU - Song, Hye Min

AU - Park, Jeyoung

AU - Hwang, Sung Yeon

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AU - Sung, Bong Hyun

AU - Bornscheuer, Uwe T.

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Chemo-Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating Materials

Abstract

Bibliographical note

Keywords

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