天然丝瓜络纤维在BMIMCl中的溶解及再生

摘要

以碱-双氧水法处理的天然丝瓜络纤维为原料,从[BMIM]Cl中制备出再生纤维素膜.通过偏光显微镜观察天然丝瓜络纤维的溶解过程,采用红外光谱、扫描电镜、X射线衍射及力学性能等测试方法,对天然丝瓜络纤维及再生纤维素膜进行表征.结果表明,经活化的丝瓜络纤维素可快速、直接溶解在离子液体中,再生前后丝瓜络纤维素发生了从纤维素I到纤维素Ⅱ的晶型转变.%Regenerated luffa cellulose film is prepared from treated natural luffa fibers in [BMIM]C1 ionic liquid.Its dissolution process was observed with polarizing microscope.The regenerated cellulose film was characterized by infrared spectroscopes,scanning electron microscopy,and strength test.The results showed that [BMIM]C1 is a good non-derivatizing solvent for natural luffa cellulose whose crystalline form transformed completely from cellulose I to cellulose Ⅱ after regenerated directly from [BMIM]C1 solution.