浆粕性质对离子液体法再生竹浆纤维性能的影响

以6种不同性质的竹浆粕为原料,选用1-乙基-3-甲基咪唑醋酸盐{EMIM] Ac]为溶剂,采用干喷湿纺的方式制备了再生竹浆纤维,探讨了竹浆粕性质对再生竹浆纤维制备过程中溶解、流变行为以及纤维性能的影响.结果表明:离子液体对竹浆粕具有非常强的溶解能力；6种竹浆粕/EMIM] Ac纺丝液都属于切力变稀流体；高聚合度和高α纤维素的竹浆粕制备的纤维的断裂强度和模量较高,但是纺丝过程不连续,发生断头较多.

Effect of Bamboo Pulp on the Properties of Regenerated Bamboo Fiber Using Ionic Liquid Solution

In this paper,six kinds of different bamboo pulps were chosen as raw material and the ionic liquid-Ac(1-ethyl-3-methylimidazolium acetate) was used as solvent.The regenerated bamboo fiber was prepared with dry-jet spinning method.The effect of bamboo pulps on the dissolution,rheological behavior of spinning dope and properties of bamboo fibers were investigated.The results showed that ionic liquid-Ac had very strong solubility to the six kinds of bamboo pulps.Moreover,the cellulose/Ac spinning solutions from six kinds of bamboo pulps belonged to the typical shear thinning fluids.From the point of view of mechanical properties,the fibers with better mechanical properties could be prepared from the pulp with high DP and high α-cellulose content,but fiber breakages were foubd during the spinning.