PBO纤维化学法表面改性的研究

采用表面蚀刻结合润胀的化学方法对PBO纤维进行表面改性,利用扫描电镜和比表面积测定仪研究了该方法对PBO纤维表面形态的影响.研究结果表明,PBO纤维经质量分数1.0%的蚀刻液S处理3min能得到较好的蚀刻效果;蚀刻后的PBO纤维再经润胀剂K润胀、物理剪切后,纤维表面变得粗糙且形成分丝结构,纤维比表面积得到很大提高,从0.73m2/g增大到10.88m2/g.粗糙程度的增加和纤维之间接触界面的增大,增强了纸页中PBO纤维之间的物理交织.

Chemical Modification of the Surface of PBO Fibers

The methods of chemical surface modification,consist of etching and swelling,were used to modify the surface of PBO fibers in this paper.The modified PBO fibers were characterized through scanning electronic microscope(SEM) and BET.The influence of treating time and treating temperature of the surface treatments with chemical reagents on the morphology of PBO Fibers was studied.The results showed that the optimal effect of etching could be obtained by using 1.0% etching solution S for three minutes,the smooth skins of the PBO fibers were peeled off and exfoliated along the core.The surface morphology of the fibers changed greatly after swelling with the swelling agent K solution and beating.The surface of PBO fibers became rough and with microfibril structure.Meanwhile, the specific surface area of PBO fibers increased greatly,from the original 0.73 m~2/g increased to 10.88m~2/g.It demonstrated that the increase of the roughness and the interfacial areas between fibers would enhance the strength of interlacement.