铁离子配位聚丙烯酸基芬顿催化纤维的制备及其性能  

Preparation of iron ions-coordinated polyacrylic acid-based Fenton catalytic fiber and its performance

作　　者：徐乃库[1] 王敬宏 XU Naiku;WANG Jinghong(School of Material Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387

出　　处：《天津工业大学学报》2024年第2期16-21,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(51103099);天津市应用基础及前沿技术研究计划资助项目(12JCQNJC01600);教育部高等学校博士学科点专项科研基金资助项目(20111201120002);中国博士后基金资助项目(2014M550143,2015T80221)。

摘　　要：为改善聚丙烯酸(PAA)纤维的性能,在湿法纺丝过程中基于铁离子配位反应成功制备了可拉伸PAA初生纤维,利用后拉伸以及热定型工艺优化纤维性能,并探究其作为Fenton催化剂在染料废水处理领域的应用。结果表明:相较硫酸铁盐,氯化铁盐配位的PAA纤维具有更为优异的力学性能和尺寸稳定性;后拉伸和热定型工艺可显著提高PAA纤维的力学性能和催化活性,并抑制铁离子的流失,拉伸20倍且在130℃定型的纤维断裂强度为1.42 cN/dtex,与未拉伸纤维相比提高了914.3%,且可在3 min内脱色90%以上的亚甲基蓝(MB),循环使用40次未出现脱色率衰减现象。In order to improve the performance of polyacrylic acid(PAA)fiber,the stretchable PAA as-spun fiber was successfully prepared based on the coordination reaction of iron ions in the process of wet spinning,and the performance of fiber was finally optimized using the processes of post-stretching and heat setting.The application of fiber as a Fenton catalyst in the field of dye wastewater treatment was researched.The results showed that compared with sulphate iron salt,the chloride iron salt-coordinated PAA fiber had outstanding mechanical properties and dimensional stability.The processes of post-stretching and heat setting could significantly improve the mechanical properties and catalytic activity of PAA fiber and inhibit the loss of iron ions.The breaking strength of fibers stretched 20 times and heat set at 130℃could reach up to 1.42 cN/dtex,which was 914.3%higher than that of unstretched fibers,and it could decolorize more than 90%of MB within 3 min without an attenuation in decolorization efficiency during 40 cycles.

关 键 词：聚丙烯酸(PAA) 湿法纺丝 芬顿催化纤维 染料废水处理 

分 类 号：TQ032[化学工程]