壳聚糖改性化学纤维的新方法及其微观分析

用H2CO3溶解壳聚糖凝胶后以物理涂覆的形式包裹在化学纤维表面的方法将疏水性的化学纤维改性成亲水性纤维,增强了化学纤维的可抄造性。结果表明,该方法切实可行,通过显微镜和SEM照片对涂覆壳聚糖前后的维纶纤维进行微观分析,发现在化学纤维表面形成的壳聚糖膜薄而均匀,同时增加了化学纤维的表面粗糙度,涂覆效果较好;通过接触角的变化说明纤维的亲水性得到改善;该方法还具有无残留物和对环境友好的优点。

A Novel Method to Modify Chemical Fibers by Chitosan Gel

In order to modify hydrophobic chemical fibers to be hydrophilic and more suitable for papermaking,this paper developed a simple and clean method that the chitosan gel dissolved by carbon dioxide was coated onto the surface of chemical fibers.The surface and cross section of uncoated and coated Polyvinyl acetals(PVA) were analyzed by microscope and SEM,results showed that,the contact angle of the coated fiber decreased in most of the areas of the fibers,the chitosan film on the fibers was thin and uniform.At the same time,there was no residual material in the coating process and the whole process was environmentally friendly.