Water-solid Suspension Grafting of Dual Monomers on Polypropylene to Prepare Ion-imprinted Fibers for Selective Adsorption of Cr(VI) 


Vol. 21,  No. 12, pp. 2729-2739, Dec.  2020
10.1007/s12221-020-0197-x


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  Abstract

In this work, a new strategy was developed to prepare Cr(VI)-imprinted polypropylene (PP) fibers-based materials for the adsorption of Cr(VI) from water. Granular PP was modified with dual monomers (glycidyl methacrylate (GMA) and acrylamide (AM)) by water-solid suspension grafting copolymerization. Then, this fibers morphology was obtained by meltblowing. Hence, the preparation steps of the fibrous Cr(VI)-imprinted adsorbent involved surface ion-imprinting and crosslinking. The influence of the grafting conditions on the grafting percentage was investigated. The maxima grafting percentages of GMA and AM were 16.4 and 10.6 %, respectively. The chemically modified products showed good mobility and stability, thus meeting the requirements of melt-blowing method. The prepared Cr(VI)-imprinted polymers showed a maximum adsorption capacity to Cr(VI) of 43.2 mg/g at pH 3. The adsorption data were well fitted by the pseudo-secondorder and Langmuir adsorption models. The adsorbent showed good selectively toward Cr(VI) in a mixed solution containing Cu(II) and SO4 2. The X-ray photoelectron spectroscopy demonstrated that the adsorbed Cr(VI) was partly reduced to Cr(III).

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  Cite this article

[IEEE Style]

Z. Luo, L. Li, M. Guo, H. Jiang, W. Geng, W. Wei, Z. Lian, "Water-solid Suspension Grafting of Dual Monomers on Polypropylene to Prepare Ion-imprinted Fibers for Selective Adsorption of Cr(VI)," Fibers and Polymers, vol. 21, no. 12, pp. 2729-2739, 2020. DOI: 10.1007/s12221-020-0197-x.

[ACM Style]

Zhengwei Luo, Lei Li, Mulin Guo, Hui Jiang, Wenhua Geng, Wuji Wei, and Zhouyang Lian. 2020. Water-solid Suspension Grafting of Dual Monomers on Polypropylene to Prepare Ion-imprinted Fibers for Selective Adsorption of Cr(VI). Fibers and Polymers, 21, 12, (2020), 2729-2739. DOI: 10.1007/s12221-020-0197-x.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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