Recycling of waste PET into useful textile auxiliaries
Abstract
Polyethylene terephthalate (PET) waste fibers were initially depolymerized using a glycolysis route in the presence of sodium sulfate as a catalyst, which is a commonly used chemical and ecofriendly as compared to heavy metal catalysts. Good yield of the pure monomer bis(2-hydroxyethylene terephthalate) (BHET) was obtained. Further, to attempt its reuse, the purified BHET was converted to different fatty amide derivatives to obtain quaternary ammonium compounds that have a potential for use as softener in the textile finishing process. The products were characterized by infrared spectroscopy. Application of these synthesized compounds was carried out on cotton fabric; they were evaluated for performance and were found to give good results. The chemicals used during depolymerization and reuse of PET are inexpensive and comparatively less harmful to the environment, and thus offer advantages in the chemical recycling of polyester waste fibers.
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Glycolysis of PET waste yields a high concentration of the pure monomer bis(2-hydroxyethyl) terephthalate (BHET), which can be used to obtain new PET and converted into fatty amide derivatives suitable as softeners for textile finishing.
“The glycolysis approach was employed to break down PET, yielding a high concentration of the pure monomer bis(2-hydroxyethyl) terephthalate (BHET), which was not only used to obtain new PET but also converted into fatty amide derivatives suitable as softeners for textile finishing [67].”
From Transforming Plastic Waste into Value: A Review of Management Strategies and Innovative Applications in Sustainable Construction (2025) · cites this paper as [67]
Glycolysis of PET by a variety of metal or organic catalysts yields bis(2-hydroxyethyl)terephthalester (BHET) as the major product.
“Glycolysis of PET by a variety of metal or organic catalysts yields bis(2-hydroxyethyl)terephthalester (BHET) as the major product.403,407”
From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [407]
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- Authors
- Shukla, S. R., Harad, A. M., & Jawale, L. S.
- Affiliations
- Institute of Chemical Technology (IN)
- Corresponding author
- Shukla, S.R.
- ORCID
- Shukla, S.R.
- Venue
- Waste Management
- Publisher
- Elsevier BV
- Published
- 2008-01
- Volume
- 28
- Issue
- 1
- Pages
- 51-56
- ISSN
- 0956-053X (ISSN-L)
- OpenAlex
- W2026220231
- Cited by
- 141
- References
- 32
- Citations by year
- 2026: 8 · 2025: 9 · 2024: 13 · 2023: 9 · 2022: 5 · 2021: 13 · 2020: 10 · 2019: 8 · 2018: 8 · 2017: 4 · 2016: 6 · 2015: 10 · 2014: 14 · 2013: 3 · 2012: 4
- FWCI
- 3.10
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Waste Management (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Environmental Science › Waste Management and Disposal › Waste Management and Recycling
- Physical Sciences › Engineering › Mechanical Engineering › Fiber-reinforced polymer composites
- Keywords
- PET waste, PET recycling, chemical recycling, glycolysis, quaternary ammonium compounds, textile softeners, cotton fabric finishing
- MeSH terms
- Conservation of Natural Resources, Environmental Pollutants, Environmental Pollution, Glycolysis, Polyethylene Terephthalates, Refuse Disposal, Textiles, Molecular Structure
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