纤维素酶洗涤对提高涤棉织物易去污性的作用机理

为探明纤维素酶洗涤提高含棉织物易去污性的机理，采用滴水法、马丁代尔磨擦一扫描电镜联合分析法、XRD分析和铜值法等测试分析技术对涤棉织物经纤维素酶洗涤后的润湿性、耐磨性、表面形态、结晶度、亲水基团含量等理化性能进行分析表征。结果表明：经纤维素酶洗涤后，棉纤维表面发生脆损，涤棉织物的耐磨性下降，在外力作用下易使织物表面的纤维脱落从而带走污垢；同时，纤维素酶洗涤使棉纤维的结晶度有所下降，纤维素大分子的β-1，4-甙键部分切断形成醛基，从而提高了棉纤维的亲水性，增加了涤棉织物的润湿性，进而使涤棉织物的易去污性得以改善。

The Study on the Mechanism of Improving of P/C Fabric Soil Release Property by Cellulase Washing

The aim of this article is to explain why soil release property of cotton-containing fabric can be improved after cellulase washing, and characterize the physicochemical properties of P/C fabric like wettability, abrasion resistance, crystalline and hydrophilic group content after cellulase washing by drip method, Martindale friction-SEM, XRD and copper value analysis. The result shows that after cellulase washing, the cotton fiber surface of P/C fabric becomes more brittle, and the external force can remove the brittle fibers of fabric surface easily, also remove the soil on the fibers. Meanwhile, the crystallinity of cotton fiber is decreased by cellulase, and the 1, 4-β glycoside bond is cut to form the aldehyde group. It can increase the hydrophilicity of cotton fiber and enhance the wettability of P/C fabric, so that soil release property of P/C fabric is improved.