壳聚糖季铵盐/硅杂化膜对棉纤维的表面修饰

Surface modification of cotton with chitosan quaternary ammonium salt/silica hybrid film

为增强棉纤维的表面性能,制备了2,3-环氧丙基十二烷基二甲基壳聚糖氯化铵衍生物,利用所制备的壳聚糖季铵盐为阳离子化试剂,通过溶胶-凝胶法,硅偶联剂环氧丙基三甲氧基硅氧烷的水解缩合,在棉纤维表面上原位自发构筑壳聚糖季铵盐/硅杂化膜。扫描电镜和EDS能谱测试结果证实壳聚糖季铵盐/硅杂化膜存在于纤维表面。经壳聚糖季铵盐/硅杂化膜修饰后的棉纤维表面润湿性能、吸附性能均发生显著的变化;随着沉积时间延长,纤维表面的疏水性能以及抗紫外线性能增强。

In order to improve the surface properties of cotton fabrics, using 2,3-epoxy-propyl dodecyl dimethyl ammonium chloride as cationic ehitosan reagent and 3-glycidoxypropyhrimethoxysilane （GPTMS） as crosslinking agent, by sol-gel method, chitosan quaternary ammonium sah/sillca hybrid film were constructed by in-situ deposition on cotton fiber. SEM and EDS analysis results confirmed the quaternary ammonium sah/silica hybrid film was deposited on the surface of cotton fiber. After deposition modification, the surface properties of modified cotton such as wettingablity and adsorption properties produced significant changes. With the deposition time increasing, the hydrophobic properties and anti-UV properties increased.