Plastic packaging is usually heavily printed with inks to provide functional benefits. However, the presence of inks strongly impedes the closed-loop recycling of plastic films. Various media have already been studied for the deinking of plastic films, but there is little scientific insight into the effectiveness of different deinking techniques. Therefore, this study aims to obtain a systematic understanding by measuring the liquefaction and maximum solubility of 14 chemically different polymer resins in seven different media typically used in plastic deinking, such as acetone, ethyl acetate, sodium hydroxide solution, cetyltrimethylammonium bromide solution, formic acid, sulfuric acid, and N,N-dimethylcyclohexylamine. Our findings show that acid-based media are able to remove a broader range of polymer resins. Organic solvents are particularly effective against acrylics and related polymer resins. The deinking efficiency tests on pure resins are also confirmed by deinking four printed plastic films containing different classes of polymer resins. A basic cost and environmental impact analysis is given to evaluate scale-up potential of the deinking medium.

塑料包装通常大量印刷油墨以提供功能优势。然而，油墨的存在严重阻碍了塑料薄膜的闭环回收。已经对各种介质进行了塑料薄膜脱墨研究，但对不同脱墨技术的有效性的科学见解很少。因此，本研究旨在通过测量 14 种化学性质不同的聚合物树脂在塑料脱墨中常用的七种不同介质（如丙酮、乙酸乙酯、氢氧化钠溶液、十六烷基三甲基溴化铵溶液、甲酸）中的液化度和最大溶解度来获得系统的了解。 、硫酸和 N,N-二甲基环己胺。我们的研究结果表明，酸基介质能够去除范围更广的聚合物树脂。有机溶剂对丙烯酸和相关聚合物树脂特别有效。对纯树脂的脱墨效率测试也通过对包含不同类别聚合物树脂的四种印刷塑料薄膜进行脱墨得到证实。给出了基本的成本和环境影响分析，以评估脱墨介质的放大潜力。