十二烷基硫酸钠对亚麻织物喷墨印花性能的影响

Effect of sodium dodecylsulfate on inkjet printing performance of linen fabric

摘要:

为提高亚麻织物的喷墨印花颜色效果，将十二烷基硫酸钠（SDS）与海藻酸钠（SA）协同作用于亚麻织物的预处理工艺，对处理后织物表面墨滴的铺展面积、喷墨印花色块的颜色参数进行了测试，使用接触角测量仪、扫描电子显微镜（SEM）、固体表面zeta电位仪、X射线光电子能谱仪（XPS）和傅里叶变换红外光谱仪（FTIR）对预处理前后亚麻织物表面物理和化学性能进行了表征。结果表明：与SA预处理织物相比，表面活性剂的引入可使亚麻织物表面墨滴铺展面积减小14%，墨滴渗化程度也明显减小；青色和黑色印花色块的表观颜色深度增加，摩擦色牢度略有降低，断裂强力和耐日晒色牢度无明显改变。同时从SEM图看出，经预处理后，SDS+SA预处理剂在亚麻织物表面上形成了薄膜，纤维间以锯齿状的膜结构堵塞了孔隙，促使更多的活性染料在滴落的位置与纤维发生共价结合；此外，预处理处理后织物的亲水性增加，有利于染料对亚麻纤维的上染。

Abstract:

In order to improve the inkjet printing performance of linen fabric, sodium dodecylsulfate (SDS) and sodium alginate (SA) were synergistically used in the pretreatment process of linen fabrics. The spreading area of ink droplets on the fabric surface and the color parameters of inkjet printing color block were tested. Using contact angle measuring instrument, scanning electron microscope (SEM), solid surface zeta potential, X-ray photoelectron spectrometer (XPS) and Fourier transform infrared spectrometer (FTIR) to analyze the surface physical and chemical properties of linen fabric before and after pretreated. The results show that the degree of ink drop penetration on the surface of the fabric was significantly reduced when the SDS added, and the spreading area of magenta ink drops was decreased by 14%, compared with SA pretreated. The color effect of cyan and black blocks was slightly increased. The rubbing fastness of the printed fabric slightly reduced, the breaking strength and sunlight fastness has not affected. After pretreated, it can be clearly seen from the SEM image that the SDS+SA pretreatment agent formed a film on the surface of the fabric, and the serrated membrane structure between the fibers blocks the pores, prompting more reactive dyes covalently bond with fibers at the dropping position, in addition, the hydrophilicity of the fabric after pretreatment treatment was increased, which is beneficial to the dye uptake of linen fibers.