离子液体AMIMCl对碱液活化的结缕草纤维素的提取与再生

Dissolution and regeneration of cellulose from zoysia japonica in AMIMCl by alkali activation

考察了经过NaOH活化的结缕草在1-烯丙基-3-甲基咪唑氯盐(AMIMCl)离子液体中的溶解再生性能。通过木质纤维素成分分析表明,经不同浓度NaOH活化的结缕草的纤维素含量显著提高,并且结构遭到一定的破坏,提高了原料与离子液体的反应活性,并且以10%的NaOH为最优比例。经过FT IR、XRD以及NMR谱图表征了AMIMCl、再生AMIMCl以及提取物的化学结构,发现AMIMCl对NaOH活化的结缕草的提取效果较好,纤维素产率高,环境友好,不产生副产物,同时离子液体经再生后可高效循环利用。

Dissolution and regeneration of cellulose from zoysia japonica in 1-ally-3-methylimidazolium chloride （AMIMCI） by the activation of NaOH with different concentrations was studied. Component analysis of lignocellulose content in activated zoysia japonica suggested that activation could improve cellulose content and the structure and crystalline were destroyed to certain degree, i.e., alkali activation could improve the reactivity of AMIMC1 and zoysia japonica. It reached optimal when NAOH concentration was 10%. The chemical structure of the original and regenerated zoysia japonica was analyzed by NMR, XRD and FT-IR, which suggested that AMIMC1 had a good solubility for cellulose in activated zoysia japonica. As an environmentally friendly solvent, AMIMC1 could be easily recycled and reused.