甘蔗渣纤维素再生纤维的制备与性能研究

Preparation of Regenerated Cellulose Fibers from Bagasse

以甘蔗渣中提取的纤维素为原料,1-烯丙基-3-甲基咪唑氯离子液体为溶剂,采用干湿法纺丝工艺制备甘蔗渣纤维素再生纤维。研究纺丝液浓度、温度、空气层距离、凝固浴温度对再生纤维断裂强度的影响,确定最佳纺丝工艺。采用红外光谱、X射线衍射、单纤维强力、热重分析、扫描电镜等测试方法对纤维的结构与性能进行测试分析。实验再生纤维的最佳制备工艺条件如下:纺丝液的浓度为4%,纺丝液温度为90℃,空气层距离为10 mm,凝固浴为20℃的蒸馏水,纤维牵伸倍数为1.2。此时,纤维的断裂强度最大,为2.52 cN/dtex,回潮率为14.80%。

Bagasse cellulose was dissolved in the ionic liquid of 1- allyl-3-methylimidazolium chloride and was spun into distilled water to prepare regenerated bagasse cellulose fibers by dry-wet spinning process. The optimal process was as follows： the concentration of spinning solution is 4%, the temperature of spinning solution is 90 ℃, the length of air gap is 10 mm, the coagulation bath is distilled water at 20 ℃, and the draw ratio is 1.2. Under the optimal process, the breaking strength of regenerated fibers reaches 2.52 cN/dtex and the moisture regain reaches 14.80%.