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| Study on the Separation Performance of Acid-ketone-water Composite Separation System Towards Aluminum Foil Layer/Polyethylene Plastic Composite Films |
| Received:August 02, 2025 Revised:September 15, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.01.141 |
| Key Words:AL/PE composite film separation;organic small-molecule acid;ketone organic reagents |
| Fund Project:生物质化学与材料国际联合研究中心（2018GHJD-19）。 |
| Author Name | Affiliation | Postcode | | ZHANG Sufeng* | 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | LEI Dan | 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021
2College of Electrical and Control Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | SUN Jiexuan | 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | YANG Miaoxui | 3China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102 | 100102 | | JING Xiaokai | 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 |
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| Abstract: |
| This study accelerated the separation of Aluminum foil layer （AL）/polyethylene plastic （PE） composite films by introducing ketones with mild swelling effects on PE and solubility of low-density adhesive layer PE of AL/PE composite films into traditional acid separators. This approach leveraged the peeling action of organic small-molecule acids on AL to form an organic small-molecule acid-ketone-water composite separation system. This study investigated the separation performance of four acid-ketone-water composite separation systems formed by blending formic acid， acetic acid， acetone， and cyclohexanone for AL/PE composite films. The results indicated that the strongest separation effect of composite separation system towards AL/PE composite film occured at a volume ratio of formic acid∶acetone∶water of 6∶1∶93. Complete separation of AL/PE composite film was achieved in just 17 min， with a total AL/PE loss rate as low as 2.08%. This approach not only significantly enhanced the separation efficiency of paper/AL/PE composite packaging materials， but also effectively reduced organic reagents content of the separation system. |
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