不同生物酶对乌拉草纤维的处理工艺研究

Study on the process optimization of meyer sedge fiber by different bio-enzymatic treatment

为制备1种可纺性好的乌拉草纤维,研究了单一生物酶和复合生物酶提取乌拉草纤维的方法,讨论了生物酶用量、温度和时间等参数对乌拉草纤维细度和拉伸性能的影响,并采用FT-IR、SEM等方法对乌拉草纤维的化学成分与表面形态进行了表征。结果表明,最优单一生物酶处理工艺为:果胶酶质量浓度0.8 g/L、温度45℃、p H值5、时间4 h。最优复合酶处理工艺为:果胶酶质量浓度0.8 g/L、漆酶质量浓度0.6 g/L、p H值4.5、时间2 h,处理后的纤维直径和断裂强度分别为57.14μm与1.49 c N/dtex,与果胶酶处理的纤维相比,直径减小了8.72%,断裂强度降低了23.6%。

In order to prepare meyer sedge fiber with good spinnability,the technology of different biological enzymes extraction of natural meyer sedge grass was studied. The effects of extraction parameters,such as concentration,temperature and time,on fiber diameter,breaking strength and elongation at breakage were discussed. The chemical composition and surface morphology of the fiber were characterized by FT-IR and SEM. The results showed that the optimum single enzyme treatment process was as follows： pectinase concentration was 0. 8 g/L,temperature was 45 ℃,the p H was 5 and treated for 4 hours. The optimal complex enzyme treatment conditions were as follows： the concentration of pectinase was 0. 8 g/L,the concentration of laccase was 0. 6 g/L,the p H was 4. 5 and treated for2 hours,the fiber diameter and breaking strength were 57. 14 μm and 1. 49 c N/dtex. Compared with pectinase treated fiber,the diameter decreased 8. 72% and the breaking strength decreased 23. 6%.