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Designing oligomeric ethylene terephtalate building blocks by chemical recycling of polyethylene terephtalate

  • The intelligent recycling of plastics waste is a major concern. Because of the widespread use of polyethylene terephtalate, considerable amounts of PET waste are generated that are ideally re-introduced into the material cycle by generating second generation products without loss of materials performance. Chemical recycling methods are often expensive and entail environmentally hazardous by-products. Established mechanical methods generally provide materials of reduced quality, leading to products of lower quality. These drawbacks can be avoided by the development of new recycling methods that provide materials of high quality in every step of the production cycle. In the present work, oligomeric ethylene terephthalate with defined degrees of polymerization and defined molecular weight is produced by melt-mixing PET with different quantities of adipic acid as an alternative pathway of recycling PET with respect to conventional methods, offering ecofriendly and economical aspects. Additionally, block-copolyesters of defined block length are designed from the oligomeric products.

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Metadaten
Author of HS ReutlingenGeyer, Björn; Röhner, Stefan; Lorenz, Günter; Kandelbauer, Andreas
DOI:https://doi.org/10.1002/app.39786
ISSN:0021-8995
eISSN:1097-4628
Erschienen in:Journal of applied polymer science
Publisher:Wiley
Place of publication:New York
Document Type:Journal article
Language:English
Publication year:2014
Tag:degradation; polyesters; recycling; thermoplastics
Volume:131
Issue:2
Page Number:12
First Page:1
Last Page:12
DDC classes:660 Technische Chemie
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt