壳聚糖氨基磺酸钛溶胶改性羊毛织物的结构及其染色性能

利用壳聚糖的氨基磺酸溶液及钛酸丁酯前驱体制备了壳聚糖钛杂化溶胶并用于羊毛织物的表面改性。改性后织物的结构及形态、热稳定性分别用FT-IR, SEM，TGA进行表征。红外光谱证实了处理后羊毛结构中含有Ti-O键，由于壳聚糖氨基磺酸钛杂化溶胶溶液会成沉积在织物表面形成薄膜，改性后织物表面更加光滑，热稳定性也提高。改性后羊毛织物用弱酸性红B染色具有较好的染色性能，当染料浓度为6%(owf),pH为5.2,染色温度为70℃，时间1h,改性羊毛织物的表观得色量（K/S）比较高。70℃染色的动力学数据表明实验数据可以用准二级动力学模型来解释。

Structure and dyeing properties of chitosan sulfamic acid /TiO2 hybrid sol modified wool

Abstract. Surface modified wool fabrics were obtained by chitosan sulfamic acid/TiO2 sol treatment. FT-IR, SEM, thermogravimetric analysis (TGA) was used to characterize the structure of modified wool fabrics. It indicates bond is formed in the modified wool through IR spectra. That treated wool fibers had more smooth surface appearance showed the presence of chitosan sulfamic acid /TiO2 film deposited onto surface of wool fibers. TGA demonstrates that the modified wool exhibits better thermal stability. Based on single factor experiment, the influence of dyeing conditions on the color strength (K/S value) of modified wool fabrics with weak acid red B dyeing were studied and compared to untreated wool. As a result, it can be concluded that the weak acid red B dyeing properties of chitosan-sulfamic acid /TiO2 modified wool were better than untreated wool at 6% dye concentration,pH5.2,70℃and dyeing time 1h. Kinetic study showed the experimental data were fitted with second-order kinetics. Further, low temperature dyeing of wool fabrics with chitosan-sulfamic acid tetrabutyl titanate (TBT) is safe, so the results obtained are quite promising as a basis for possible future industrial application.