湿纺亚麻纱的生化联合处理工艺

Biochemical treatment on wet spinning flax yarn

为解决湿纺亚麻纱条干均匀度差,成纱粗硬,织造易断头等问题,探讨了一种湿纺纱的生化联合处理工艺,即先通过Na OH/尿素溶液改性,再经漆酶/酸性木聚糖酶复合处理工序,研究其对亚麻纱线性能的影响。结果表明,在Na OH/尿素溶液改性中,最优工艺参数即Na OH用量为6.5%(o.w.f),复合酶处理中漆酶用量为4.0%(o.w.f),酸性木聚糖酶用量4.5%(o.w.f),处理温度50℃,处理时间90 min下,处理后的亚麻纱较原纱条干CV值提升41%,毛效提升134%,断裂伸长率提升95.8%。改善了亚麻纱的物理机械性能,为亚麻纱的织造工序创造一定的条件。

The flax yarn spun with wet spinning process is poor in evenness,high in stiffness,and easy to be broken during weaving. In order to solve the problems,a biochemistry treatment process was used to discuss the influence on the properties of flax yarns. The yarns were first modified with Na OH / urea solution,and then treated withd laccase / acid xylanase compound enzyme. The results indicate the optimum technology parameters as followed. The dosage of Na OH is 6. 5%（ o. w. f） in the modification of Na OH / urea solution,the dosage of compound enzyme are separate laccase 4. 0%（ o. w. f） and acid xylanase 4. 5%（ o. w. f） in compound enzyme process,the treatment temperature is 50 ℃,and the time is 90 min. Under this biochemical treatment process,the yarn evenness CV increases 41%,capillary effect increases 134%,and the elongation at break increases 95. 8%. The physical and mechanical properties are improved significantly. It can create a certain condition for the weaving of flax yarns.