铁离子配位聚丙烯酸基芬顿催化纤维的制备及其性能

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中文摘要：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。

外文标题：Preparation of iron ions-coordinated poly acrylic acid-based Fenton catalytic fiber and its performance

外文摘要：In order to improve the performance of polyacrylic acid(PAA)fiber,the stretchable PAA as-spun fiber was suc-cessfully prepared based on the coordination reaction of iron ions in the process of wet spinning,and the perfor-mance 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 com-pared 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 me-chanical 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.

外文关键词：

polyacrylic acid(PAA)wet spinningFenton catalytic fiberdye wastewater treatment

作者：

徐乃库、王敬宏

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作者单位：

天津工业大学材料科学与工程学院,天津 300387

关键词：

聚丙烯酸(PAA) 湿法纺丝芬顿催化纤维染料废水处理

基金：

国家自然科学基金资助项目天津市应用基础及前沿技术研究计划资助项目教育部高等学校博士学科点专项科研基金资助项目中国博士后基金资助项目中国博士后基金资助项目

项目编号：

5110309912JCQNJC01600201112011200022014M5501432015T80221

出版年：

2024

DOI：

10.3969/j.issn.1671-024x.2024.02.003

天津工业大学学报

天津工业大学

天津工业大学学报

CSTPCD北大核心

影响因子：0.404

ISSN：1671-024X

年,卷(期)：2024.43(2)