中文摘要：

采用一步法合成了N-烯丙基吡啶氯盐离子液体（[APy]Cl）,用傅里叶变换红外光谱（FT-IR）和质谱分析（MS）进行结构表征,并与5种有机溶剂[二甲基亚砜（DMSO）、N,N-二甲基甲酰胺（DMF）、N,N-二甲基乙酰胺（DMAC）、吡啶及BS-12]形成复合溶剂,考察了麦秸纤维素在其复合溶剂中的溶解性能。结果表明：质量分数2%的麦秸纤维素在[APy]Cl/DMSO复合溶剂中溶解性能较佳,当复合溶剂m（[APy]Cl）∶m（DMSO）=1∶0.5、120℃时,75 min可溶解完全。利用IR和X射线衍射对再生前后的纤维素进行结构表征,可知[APy]Cl/DMSO复合溶剂对麦秸纤维素溶解为直接溶解过程,溶解后麦秸纤维素由晶型Ⅰ转变成晶型Ⅱ。

英文摘要：

N-allylpyridinium chloride ionic liquid （[ APy ] Cl ） was synthesized by one-step process, which was characterized by FF-IR and MS. The dissolubilities of wheat straw cellulose in [ APy ] Cl/co-solvent （ dimethylsulfoxide （DMSO） , N, N-dimethyl-1 formamide （DMF）, N, N-dimethylacetamide （DMAC）, pyridine or BS-12） were measured and compared. The results show that the solubility in [ APy] C1/DMSO is better than that in several other solvents under the same conditions. [ APy ] Cl /DMSO （ mass ratio 1 ： 0.5 ） can dissolve wheat straw cellulose within 75 min at 120 ℃. The wheat straw cellulose and the regenerated cellulose were analyzed by FT-IR, XRD. It reveals that there is no derivatization of reaction in the process of dissolution, and dissolving the wheat straw cellulose is a direct process. Furthermore, the crystal form of regenerated cellulose is transformed from cellulose I to cellulose Ⅱ.