氧化石墨烯改性海藻酸纤维的结构与性能研究  

Study on Structure and Performance of GO Modified Alginic Acid Fibers

作　　者：郭垒[1] 陈艳艳[1] 马晓梅[1] 

机构地区：[1]青岛大学化学化工学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2016年第1期109-114,共6页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：山东省优秀中青年科学家奖励基金(BS2009CL037)

摘　　要：针对以纯海藻酸钠制备的海藻酸纤维力学性能不理想的问题,本文采用改进的霍姆斯法合成了氧化石墨烯(graphene oxide,GO),并以盐酸溶液作为凝固浴,对添加了GO的海藻酸钠溶液采用湿法纺丝,成功制备了GO改性海藻酸纤维,并考察了改性纤维的结构特征(化学结构、微观结构与聚集态结构)、力学性能、阻燃性能及吸附性能。研究结果表明,改性纤维在径向表面上分布有不规则的沟壑、横截面形貌同样不规整,GO的加入使改性纤维的断裂强度及断裂伸长率明显提高。当GO的质量分数为5%时,断裂强度为普通海藻酸纤维的199%,断裂伸长率为普通海藻酸纤维的125%。而且与普通的海藻酸纤维相比,改性纤维的阻燃性能获得了极大的提升,同时,对二价铜离子保持着良好的吸附性。该研究为制备功能型海藻酸纤维提供了理论参考。In order to improve the poor mechanical properties of pure alginic acid fibers made of sodium alg- inate, GO modified alginaic acid fibers were successfully prepared. To achieve this, graphene oxide was firstly synthesized by Improved Hummers Method, then GO modified alginic acid fibers were achieved through wet spinning of mixed GO and sodium a[ginate solution using hydrochloric acid as coagulation bath. The structural characteristics, mechanical properties, flame retardant properties and adsorption properties of the modified fibers were investigated. The results show that the modified fibers have radial irregular sags on the surface, and the cross section morphology is not neat. Addition of GO improves their mechanical properties, the fracture strength of the modified fibers is 199 ~ that of ordinary alginaic acid fi- bers, and the elongation at break of modified fibers is 125% of ordinary alginaic acid fibers. Compared to pure alginaic acid fibers, adding GO also greatly improves the flame retardant properties of the modified fi- bers. At the same time, the modified fibers maintain the good adsorption of Cu^2＋. This research provides theoretical references for the preparation of functional alginaic acid fiber.

关 键 词：海藻酸纤维 氧化石墨烯 湿法纺丝 

分 类 号：TQ340.1[化学工程—化纤工业]