New dual functionalized zwitterions and ionic liquids; Synthesis and cellulose dissolution studies
作者:Ingrid Grøssereid、Kallidanthiyil Chellappan Lethesh、Vishwesh Venkatraman、Anne Fiksdahl
DOI:10.1016/j.molliq.2019.111353
日期:2019.10
N-oxyethylene-N-sulfopropyl imidazolium based ionic liquids (ILs) with unconventional anions for cellulose dissolution were synthesized and characterized (NMR, IR, HRMS, TGA, Td). The ILs were applied in studies on cellulose (MCC) dissolution. Results showed that varying the IL cation had greater impact on cellulose dissolution ability than the minor effect seen by anion exchange. Up to 20 wt-% MCC was dissolved
合成并表征了新的具有非常规阴离子的双官能化N-氧乙烯-N-磺丙基丙基咪唑鎓离子液体(ILs),用于纤维素溶解(NMR,IR,HRMS,TGA,T d)。IL被用于纤维素(MCC)溶解的研究。结果表明,与阴离子交换所见的较小影响相比,改变IL阳离子对纤维素溶解能力的影响更大。在100°C下,将多达20 wt%的MCC溶解在DMF / ILs溶液中。通过相应的N-氧乙烯咪唑磺酸盐两性离子(ZIs)合成了双重功能化的离子液体(ILs),它们是通过双N制备的(74–99%)-咪唑烷基化步骤,包括1,3-丙磺酸内酯的开环。通过XRD分析对原始MCC和再生纤维素样品进行表征。