Journal of Supercritical Fluids, volume 181, pages 105503
Chemical recycling of polyethylene in oxygen-enriched supercritical CO2
Elmanovich I V
1, 2
,
Stakhanov A.I.
1
,
Kravchenko E I
2
,
Stakhanova S V
3
,
Pavlov A. A.
1
,
Ilyin M. M.
1
,
Kharitonova E P
2
,
Gallyamov M. O.
1, 2
,
Khokhlov A R
1, 2
Publication type: Journal Article
Publication date: 2022-02-01
Journal:
Journal of Supercritical Fluids
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.9
ISSN: 08968446
Physical and Theoretical Chemistry
General Chemical Engineering
Condensed Matter Physics
Abstract
Thermal oxidation of polyethylene was carried out in oxygen-enriched sc CO2 and in pure oxygen under a pressure of 215 and 14 bar, respectively. Oxygen to polymer weight ratio was varied. At lower oxygen content, the products were brown to dark brown pastes; at higher oxygen content, the products were dark yellow to dark-brown liquids. For the oligomeric fraction of the products, the data on molecular weights obtained by means of diffusion-ordered NMR and gel permeating chromatography was compared. Thermogravimetric analysis demonstrated that oxygen content strongly affects the yield of volatile products. The volatile products were further analyzed by means of 1H, 13C NMR, gas chromatography-mass spectrometry and potentiometric titration. All the results obtained suggest that sc CO2 influence is more pronounced at lower oxygen to polymer mass ratio, which may be useful for carrying out chemical recycling of polyethylene through thermal oxidation while minimizing the amount of oxygen required.
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Citations by publishers
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- We do not take into account publications that without a DOI.
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- Statistics recalculated weekly.
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Elmanovich I. V. et al. Chemical recycling of polyethylene in oxygen-enriched supercritical CO2 // Journal of Supercritical Fluids. 2022. Vol. 181. p. 105503.
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Elmanovich I. V., Stakhanov A., Kravchenko E. I., Stakhanova S. V., Pavlov A. A., Ilyin M. M., Kharitonova E. P., Gallyamov M. O., Khokhlov A. R. Chemical recycling of polyethylene in oxygen-enriched supercritical CO2 // Journal of Supercritical Fluids. 2022. Vol. 181. p. 105503.
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TY - JOUR
DO - 10.1016/j.supflu.2021.105503
UR - https://doi.org/10.1016%2Fj.supflu.2021.105503
TI - Chemical recycling of polyethylene in oxygen-enriched supercritical CO2
T2 - Journal of Supercritical Fluids
AU - Elmanovich, I V
AU - Stakhanov, A.I.
AU - Kravchenko, E I
AU - Stakhanova, S V
AU - Pavlov, A. A.
AU - Ilyin, M. M.
AU - Kharitonova, E P
AU - Gallyamov, M. O.
AU - Khokhlov, A R
PY - 2022
DA - 2022/02/01 00:00:00
PB - Elsevier
SP - 105503
VL - 181
SN - 0896-8446
ER -
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@article{2022_Elmanovich,
author = {I V Elmanovich and A.I. Stakhanov and E I Kravchenko and S V Stakhanova and A. A. Pavlov and M. M. Ilyin and E P Kharitonova and M. O. Gallyamov and A R Khokhlov},
title = {Chemical recycling of polyethylene in oxygen-enriched supercritical CO2},
journal = {Journal of Supercritical Fluids},
year = {2022},
volume = {181},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016%2Fj.supflu.2021.105503},
pages = {105503},
doi = {10.1016/j.supflu.2021.105503}
}