前处理对去除棉共生物和润湿性的影响

该课题系棉织物生物酶前处理的前期研究，分析了传统前处理工艺对棉织物上杂质的去除效果，以及对棉织物润湿性的影响。研究结果表明，碱煮练能去除棉纤维上大部分非纤维素物质，但棉织物的润湿性极差。单用漂白能去除棉纤维上大部分果胶，但几乎不能去除棉蜡，棉织物的润湿性也很差。碱煮练后双氧水漂白，虽然只少量降低了棉纤维上的杂质含量，但能有效提高棉织物的润湿性。

Effects of pretreatment on impurities removal and wettability of cotton fabric

Traditional pretreatment of cotton fabric normally adopts alkali scouring, bleaching, or the combination of alkali scouring and hydrogen peroxide bleaching, removing efficiency of impurities on cotton fabric and effects on wettability are analyzed. The results show that alkali scouring can remove most of noncellulosic constituents on the cotton fiber, but the wettability is poor; bleaching can degrade almost all of the pectin, but hardly any of the wax, so the water absorbency is poor too, the combination of alkali scouring and hydrogen peroxide can impart the cotton fabric high wettability, although only a little reduction in impurity content.