棉织物生物酶前处理条件探索以及对涂料染色效果的影响

Discussion of the enzyme pretreatment techniques on cotton fabric and the effect on the pigment dyeing

采用生物酶轧堆法对纯棉坯布进行前处理,优化和筛选出了最佳工艺条件和配方:生物酶30 g/L(其中,淀粉酶6 g/L、精练酶24 g/L),H2O2 10 g/L,Na2SiO3 4 g/L,AEC-13 2 g/L,pH值5～10,55℃保温堆置10～24 h,同时将处理后的织物采用涂料轧染染色,探索不同前处理方法对涂料染色效果的影响,并与常规处理方法作对比,结果表明:经过生物酶前处理的织物与常规处理织物在退浆率、白度、毛效方面效果相当,而且强力保留值较高,对织物的损伤极小,可用生物酶前处理方法代替常规的碱前处理;从涂料染色后的结果可以看出,生物酶前处理织物涂料染色后K/S值、色度值、摩擦牢度、皂洗牢度都与常规处理织物的染色效果相当.

The cotton grey fabric was pretreated by enzyme using the pad-batch process and the optimum techniques were optimized： 30 g/L of enzyme （6 g/L of amylase and 24 g/L of scouring enzyme）, H202 10 g/L, Na2SiO3 4 g/L,AEC-13 2 g/L,pH value=5-10, batched at 55 ℃ for 10N24 h. The fabrics after the pretreatment were pad dyed with the pigment and compared with the cotton pretreated by the traditional alkali pretreatment. The effect of different pretreatment method on the dyeing result of pigment dyeing. The result showed that the desizing rate, whiteness and capillary effect of fabric pretreated by enzyme were similar with those of the fabric pretreat- ed by conventional treatment, and the strength retention value was high and has minimal damage to fabric. The conventional alkali pretreatment could be replaced by enzyme method. The dyeing result of pigment dyeing showed that K/S value, color depth, crocking and washing fastness of fabric treated by enzyme was similar with those of the traditional alkali pretreatment.