作者:Leigh Ford、Jitendra R. Harjani、Farzad Atefi、M. Teresa Garcia、Robert D. Singer、Peter J. Scammells
DOI:10.1039/c0gc00082e
日期:——
A range of ionic liquids (ILs) containing a pyridinium cation were synthesised and their biodegradability was evaluated using the CO2 headspace test (ISO 14593). ILs bearing a 1-(2-hydroxyethyl) side chain were prepared from either pyridine or nicotinic acid derivatives. These ILs showed high levels of biodegradation under aerobic conditions and can be classified as ‘readily biodegradable’. In contrast, pyridinium ILs with methyl or ethyl ether side chains showed significantly lower levels of biodegradability in the same test. Biodegradation studies on a range of novel ILs with acetal and carbamate functionalities, as well as thiazolium-based salts, also showed low levels of mineralization.
我们合成了一系列含有
吡啶阳离子的
离子液体 (IL),并使用
二氧化碳顶空试验(ISO 14593)对其
生物降解性进行了评估。含有 1-(2-羟乙基)侧链的
离子液体由
吡啶或
烟酸衍
生物制备而成。这些 IL 在有氧条件下显示出较高的
生物降解
水平,可归类为 "易
生物降解"。相比之下,带有甲基或
乙基醚侧链的
吡啶鎓惰性聚合体在同一测试中的
生物降解能力明显较低。对一系列具有
缩醛和
氨基甲酸酯官能团的新型 IL 以及
噻唑盐进行的
生物降解研究也显示出较低的矿化
水平。