Cd2+-PVA/PA6金属配合纳米纤维的制备及反应动力学分析

纺织学报 ›› 2012, Vol. 33 ›› Issue (3): 5-8.

Cd2+-PVA/PA6金属配合纳米纤维的制备及反应动力学分析

凤权^1,2,王清清¹,魏取福¹,汪学骞²,侯大寅²

1.生态纺织教育部重点实验室（江南大学）
2. 安徽工程大学纺织服装学院

收稿日期:2011-04-14 修回日期:2011-07-13 出版日期:2012-03-15 发布日期:2012-03-06
通讯作者: 魏取福 E-mail:qfwei@jiangnan.edu.cn
基金资助:
教育部博士点专项基金（20090093110004）；安徽省高校省级自然基金重点项目（KJ2009-a119）;

Preparation of Cd²⁺-PVA/PA6 metal chelated nanofibers and analysis of reaction kinetics

FENG Quan, WANG Qing-Qing, WEI Qu-Fu, WANG Xue-Qian, HOU Da-Yin

Received:2011-04-14 Revised:2011-07-13 Online:2012-03-15 Published:2012-03-06
Contact: WEI Qu-Fu E-mail:qfwei@jiangnan.edu.cn

摘要/Abstract

摘要： 利用静电纺丝技术得到PVA/PA6复合纳米纤维，并将其与镉离子（Cd2+）溶液反应，制备Cd2+-PVA/PA6金属配合纳米纤维。采用原子吸收光谱（AAS）测定金属离子浓度，用傅里叶红外光谱(FTIR)对PVA/PA6复合纳米纤维和Cd2+-PVA/PA6金属配合纳米纤维的相应吸收峰进行分析，用扫描电子显微镜（SEM）对其形貌进行表征。结果表明，PVA/PA6纳米纤维具有优异的金属离子配合性能和良好的形态稳定性。同时研究了金属离子吸附过程及动力学参数，得出吸附常数K_l=0.0257 L/mmol、饱和离子配合量Q_m=4.4643 mmol/g，相关系数R²=0.997，该反应过程符合兰格缪尔吸附模型。

关键词: 聚乙烯醇, 聚已内酰胺, 纳米纤维, 金属配合, 动力学

Abstract: PVA/PA6 composite nanofibers were formed by electrospinning and the reacted with Cd²⁺solution to prepare Cd²⁺ -PVA/PA6 metal chelated nanofibers. The metal ions (Cd²⁺) concentration was determined by atomic absorption spectrophotometer (AAS); the morphologies were characterized by scanning electronic microscopy (SEM); and the major absorption peaks were assigned by means of Fourier transform infrared (FT-IR) spectrography. The result shows that PVA/PA6 composite nanofibers have excellent adsorption capacity for metals ions such as Cd²⁺and good shape stability. The absorption process and kinetics parameters of metal ions were also studied in this work. The saturated amounts of coordinated Cd²⁺ (Qm) was 4.4643 mmol/g (dry fiber), the adsorption constant (K_l) was 0.0257 L/mmol ,and the correlation coefficient R²=0.997. The process of reaction was corresponding with Langmuir model.

Key words: PVA, PA6, nanodiber, metal chelated, kinetics

中图分类号:

TQ342

凤权, 王清清, 魏取福, 汪学骞, 侯大寅. Cd2+-PVA/PA6金属配合纳米纤维的制备及反应动力学分析[J]. 纺织学报, 2012, 33(3): 5-8.

FENG Quan, WANG Qing-Qing, WEI Qu-Fu, WANG Xue-Qian, HOU Da-Yin. Preparation of Cd²⁺-PVA/PA6 metal chelated nanofibers and analysis of reaction kinetics[J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(3): 5-8.

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