棉秆皮的复配生物酶脱胶工艺初探

Preliminary study on compound enzymes degumming of cotton stalk bast fibers

为避免化学脱胶法对环境的严重污染和对纤维造成的损伤,研究了棉秆皮纤维的复配生物酶脱胶方法。采用果胶酶和半纤维素酶复配的方法对棉秆皮进行脱胶处理,通过三元二次正交回归试验优化复配酶处理的工艺条件。结果表明:在复配酶浓度1.98%、脱胶时间15 h、温度54℃时,棉秆皮纤维的残胶率可控制在6%左右,通过纤维性能指标测试测得棉秆皮纤维的细度为3.46 tex,断裂强度为50.8 cN/tex,主体长度70～130 mm,可以作为纺织纤维加工利用。

In order to avoid the serious environmental pollution and fiber damage from chemical degumming, compound enzymes degumming of cotton stalk bast fibers was studied. Pectinase and hemicellulase were used to degum the cotton stalk bast fibers and ternary quadratic orthogonal regression experiment was made to optimize the conditions of the compound enzyme treatment. The result shows that when the concentration of compound enzymes is 1.98%, degumming time is 15h and temperature is 54℃, the residual gum content can be controlled at about 6%. Fiber performance of the cotton stalk bast fibers was tested, of which fineness was 3.46tex, breaking strength was 50.8cN/tex, principal length was about 70 - 130mm. The fibers could be further processed and utilized as textile fiber.