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Monomer Recycling and Repolymerization of Post‐Consumer Polyester Textiles

Kirstein, Mathias / Lücking, Charlotte / Biermann, Lars / Brepohl, Esther / Salikov, Vitalij / Eichert, Carsten / Paschetag, Mandy / Scholl, Stephan

Due to the presence of dyes and additives, textile recycling is challenging, therefore the majority of textile waste is downcycled to low‐value products, incinerated or landfilled. In this study, a continuous depolymerization of post‐consumer polyester textiles was conducted by alkaline hydrolysis. The degree of depolymerization was assessed and found to be 94 %. After recovering and analyzing the terephthalic acid and ethylene glycol the monomers were successfully polymerized to regain a food grade quality recycled polyethylene terephthalate. The presented recycling approach allows a closed‐loop recycling of textiles.

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Monomer Recycling and Repolymerization of Post‐Consumer Polyester Textiles

Kirstein, Mathias / Lücking, Charlotte / Biermann, Lars / Brepohl, Esther / Salikov, Vitalij / Eichert, Carsten / Paschetag, Mandy / Scholl, Stephan

Due to the presence of dyes and additives, textile recycling is challenging, therefore the majority of textile waste is downcycled to low‐value products, incinerated or landfilled. In this study, a continuous depolymerization of post‐consumer polyester textiles was conducted by alkaline hydrolysis. The degree of depolymerization was assessed and found to be 94 %. After recovering and analyzing the terephthalic acid and ethylene glycol the monomers were successfully polymerized to regain a food grade quality recycled polyethylene terephthalate. The presented recycling approach allows a closed‐loop recycling of textiles.

Monomer Recycling and Repolymerization of Post‐Consumer Polyester Textiles

Kirstein, Mathias / Lücking, Charlotte / Biermann, Lars / Brepohl, Esther / Salikov, Vitalij / Eichert, Carsten / Paschetag, Mandy / Scholl, Stephan

Due to the presence of dyes and additives, textile recycling is challenging, therefore the majority of textile waste is downcycled to low‐value products, incinerated or landfilled. In this study, a continuous depolymerization of post‐consumer polyester textiles was conducted by alkaline hydrolysis. The degree of depolymerization was assessed and found to be 94 %. After recovering and analyzing the terephthalic acid and ethylene glycol the monomers were successfully polymerized to regain a food grade quality recycled polyethylene terephthalate. The presented recycling approach allows a closed‐loop recycling of textiles.

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Title:

Monomer Recycling and Repolymerization of Post‐Consumer Polyester Textiles

Contributors:

Kirstein, Mathias (author) / Lücking, Charlotte (author) / Biermann, Lars (author) / Brepohl, Esther (author) / Salikov, Vitalij (author) / Eichert, Carsten (author) / Paschetag, Mandy (author) / Scholl, Stephan (author)

Published in:

Chemie Ingenieur Technik ; 95 ; 1290-1296

Publication date:

2023-08-01

Size:

7 pages

ISSN:

0009-286X , 1522-2640

DOI:

https://doi.org/10.1002/cite.202200197

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Circular economy , Depolymerization , Monomer recycling , PET circularity , Polyester

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