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Degradation of poly(ethylene terephthalate) using ionic liquids
Open accessAbstract
The degradation of poly(ethylene terephthalate) (PET) was successfully achieved using ionic liquids. The products were separated according to their solubilities in boiling water. Average molecular weights of the main product were determined by gel permeation chromatography (GPC). The physicochemical properties of the product have been characterized by scanning electron microscopy equipped with an energy dispersive X-ray analyzer (SEM/EDX), X-ray diffractometer, infrared spectrometric analyzer, differential scanning calorimeter, and thermogravimetric analysis instrument. The influences of experimental parameters, such as the reaction time, reaction temperature, and addition of different catalysts on the solubility of PET were investigated. A study on the recycling of the ionic liquid shows that ionic liquid could be used repeatedly. Moreover, the solubility of PET in the recycled ionic liquid is higher than that in fresh ionic liquid. Further study shows that the increase of solubility in the recycled ionic liquid is attributable to the presence of a minor amount of water. A mechanism of the degradation of PET in 1-butyl-3-methylimidazolium chloride ([bmim]Cl) was proposed. In addition, the kinetics of this reaction was investigated. Results show that this degradation process is a first-order kinetic reaction and the activation energy is 232.79 kJ mol−1.
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Cites
Influence of chloride, water, and organic solvents on the physical properties of ionic liquids
Seddon, K. R., Stark, A., & Torres, M.-J. (2000) · Pure and Applied Chemistry · doi:10.1351/pac200072122275 · Cited by 2,293
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Metadata
- Authors
- Wang, H., Li, Z., Liu, Y., Zhang, X., & Zhang, S.
- Venue
- Green Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2009
- Volume
- 11
- Issue
- 10
- Pages
- 1568
- ISSN
- 1463-9262 (ISSN-L)
- 1463-9270
- OpenAlex
- W2019327801
- Cited by
- 237
- References
- 1
- FWCI
- 1.44
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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