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Peer-reviewedCC BY-NC-ND 4.0JACS Au

Internal Dimethyl Carbonate Circulation-Promoted Synergistic Co-Recycling of Polycarbonates and Polyesters in Methanol

  • Yusi Wang1,2
  • Wei Zeng1
  • Yiming Liu1,2
  • Hui Zhang1,2
  • Yanfei Zhao1,2
  • Rongxiang Li1,2
  • Yuxuan Wang1,2
  • Daolan Liu1
  • Minhao Tang1
  • Jiaju Fu1,2
  • Buxing Han1,2
  • Zhimin Liu1,2
  1. 1Institute of Chemistry, Chinese Academy of Sciences , , ,
  2. 2University of Chinese Academy of Sciences , ,
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Abstract

Co-recycling of mixed plastic streams offers a viable opportunity to manage spent plastic mixtures and realize a circular economy. Herein, we present an internal dimethyl carbonate (DMC) circulation-promoted co-recycling of polycarbonate (PC) and polyester mixture into their monomers in methanol under mild conditions (e.g., 120 °C). In this protocol, PC is first methanolized to generate DMC and diol under the catalysis of ionic liquids (e.g., 1-butyl-3-methylimidazolium chloride ([BMIm][Cl])), and the resultant DMC participates in the subsequent degradation of polyester over the same catalyst, yielding dimethyl ester and carbonate. Furthermore, the generated carbonate is quickly converted into DMC under the experimental conditions, thus forming an internal DMC circulation. This strategy can be employed in handling mixtures of PC and polyester with various ratios using methanol, affording corresponding monomers in high yields. It provides an innovative perspective that accelerates the development of co-recycling technology for mixed plastic wastes.

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Cite

BibTeXRIS
BibTeX
@article{wang2026internal,
  title = {{Internal Dimethyl Carbonate Circulation-Promoted Synergistic Co-Recycling of Polycarbonates and Polyesters in Methanol}},
  author = {Yusi Wang and Wei Zeng and Yiming Liu and Hui Zhang and Yanfei Zhao and Rongxiang Li and Yuxuan Wang and Daolan Liu and Minhao Tang and Jiaju Fu and Buxing Han and Zhimin Liu},
  journal = {JACS Au},
  year = {2026},
  month = oct,
  doi = {10.1021/jacsau.6c01229},
  url = {https://pubs.acs.org/jaaucr/article/doi/10.1021/jacsau.6c01229/5460517/Internal-Dimethyl-Carbonate-Circulation-Promoted},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - Internal Dimethyl Carbonate Circulation-Promoted Synergistic Co-Recycling of Polycarbonates and Polyesters in Methanol
AU  - Yusi Wang
AU  - Wei Zeng
AU  - Yiming Liu
AU  - Hui Zhang
AU  - Yanfei Zhao
AU  - Rongxiang Li
AU  - Yuxuan Wang
AU  - Daolan Liu
AU  - Minhao Tang
AU  - Jiaju Fu
AU  - Buxing Han
AU  - Zhimin Liu
PY  - 2026
DA  - 2026/10/29
JO  - JACS Au
DO  - 10.1021/jacsau.6c01229
UR  - https://pubs.acs.org/jaaucr/article/doi/10.1021/jacsau.6c01229/5460517/Internal-Dimethyl-Carbonate-Circulation-Promoted
AB  - Co-recycling of mixed plastic streams offers a viable opportunity to manage spent plastic mixtures and realize a circular economy. Herein, we present an internal dimethyl carbonate (DMC) circulation-promoted co-recycling of polycarbonate (PC) and polyester mixture into their monomers in methanol under mild conditions (e.g., 120 °C). In this protocol, PC is first methanolized to generate DMC and diol under the catalysis of ionic liquids (e.g., 1-butyl-3-methylimidazolium chloride ([BMIm][Cl])), and the resultant DMC participates in the subsequent degradation of polyester over the same catalyst, yielding dimethyl ester and carbonate. Furthermore, the generated carbonate is quickly converted into DMC under the experimental conditions, thus forming an internal DMC circulation. This strategy can be employed in handling mixtures of PC and polyester with various ratios using methanol, affording corresponding monomers in high yields. It provides an innovative perspective that accelerates the development of co-recycling technology for mixed plastic wastes.
SN  - 2691-3704
ER  -