为了获得较好力学性能的蒲葵再生纤维素纤维,以蒲葵为原料制备纤维素浆粕,采用N-甲基吗啉氧化物体系溶解蒲葵纤维素制备纺丝原液,然后通过干湿法纺丝工艺制备蒲葵再生纤维素纤维.探讨了干湿法纺丝工艺条件,如喷丝头拉伸比、空气层高度、凝固浴温度、纺丝液浓度等对获得的有关纤维力学性能的影响.结果表明:当喷丝头拉伸比3.4,空气层高度2.2cm、凝固浴温度16℃,纺丝液质量分数9%时,所制得纤维的各项力学性能较好.其纤维线密度17.83 dtex,断裂强度2.21 cN/dtex,断裂伸长率8.71%,初始模量74.55 cN/dtex.认为:通过优化纺丝工艺所制得蒲葵再生纤维素纤维能够满足织造要求.%In order to obtain livistona regenerated cellulose fiber with better mechanical property ,cellulose pulp was prepared with raw material of livistona .N-methylmorpholineoxide system was adopted to dissolve livis-tona cellulose and to prepare the spinning solution .Then ,livistona regenerated cellulose fiber was spun by dry-wet spinning process .The influence of dry-wet spinning conditions on the fibers mechanical property was discussed .It included drawing ratio in spinning nozzle ,height of air layer ,temperature of coagulation bath ,concentration of spinning solution and so on .The results show that the fiber mechanical properties are better when the drawing ra-tio in spinning nozzle is 3 .4 ,the height of air layer is 2 .2 cm ,the temperature of coagulation bath is 16 ℃ and the concentration of spinning solution is 9% .The fiber linear density is 17 .83 dtex ,the breaking intensity is 2 .21 cN/dtex ,the breaking elongation is 8 .71% and the initial modulus is 74 .55 cN/dtex .It is considered that the livistona regenerated cellulose fiber is obtained through optimized spinning process can meet the weaving re-quirement .
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