解构(建筑)
离子液体
聚合物
材料科学
溶剂
化学稳定性
催化作用
热稳定性
化学工程
纳米技术
有机化学
化学
废物管理
复合材料
工程类
作者
Ty Christoff‐Tempesta,Thomas H. Epps
出处
期刊:ACS Macro Letters
[American Chemical Society]
日期:2023-07-30
卷期号:12 (8): 1058-1070
被引量:1
标识
DOI:10.1021/acsmacrolett.3c00276
摘要
Ionic liquids (ILs) are a promising medium to assist in the advanced (chemical and biological) recycling of polymers, owing to their tunable catalytic activity, tailorable chemical functionality, low vapor pressures, and thermal stability. These unique physicochemical properties, combined with ILs' capacity to solubilize plastics waste and biopolymers, offer routes to deconstruct polymers at reduced temperatures (and lower energy inputs) versus conventional bulk and solvent-based methods, while also minimizing unwanted side reactions. In this Viewpoint, we discuss the use of ILs as catalysts and mediators in advanced recycling, with an emphasis on chemical recycling, by examining the interplay between IL chemistry and deconstruction thermodynamics, deconstruction kinetics, IL recovery, and product recovery. We also consider several potential environmental benefits and concerns associated with employing ILs for advanced recycling over bulk- or solvent-mediated deconstruction techniques, such as reduced chemical escape by volatilization, decreased energy demands, toxicity, and environmental persistence. By analyzing IL-mediated polymer deconstruction across a breadth of macromolecular systems, we identify recent innovations, current challenges, and future opportunities in IL application toward circular polymer economies.
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