Volume 134, Issue 25
Article

Water-resistant modification of poly(vinyl alcohol)/polyamidoxime chelating fibers prepared by emulsion spinning and their adsorption properties

Yongjiao Song

Yongjiao Song

The State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006 China

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Xianghan Zhang

Xianghan Zhang

The State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006 China

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Guangdou Ye

Guangdou Ye

The State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006 China

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Jianjun Xu

Jianjun Xu

The State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006 China

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Mengjin Jiang

Corresponding Author

Mengjin Jiang

The State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006 China

Correspondence to: M. Jiang (E-mail: [email protected])Search for more papers by this author
First published: 06 March 2017
Citations: 2

ABSTRACT

The poly(vinyl alcohol)/polyacrylonitrile (PVA/PAN) precursor fiber prepared by emulsion spinning was separately crosslinked with dimethyloldihydroxyethyleneurea (DMDHEU), formaldehyde (FA), and both DMDHEU and FA for preparing PVA/polyamidoxime (PAO) chelating fibers with elevated water-resistance. Effects of different crosslinking systems on the properties of the composite amidoxime chelating fibers have been investigated. Results show that FA treatment can effectively increase the water-resistance of composite fiber, but would dramatically decrease the adsorption properties of composite fiber. Conversely, DMDHEU treatment has inferior effects on the water-resistance of the composite fiber, but would impressively increase the adsorption properties of composite fiber. The composite fiber treated with both DMDHEU and FA could reach good overall performances (water contact angle: 94.83°; soft point in hot water: 116 °C; breaking strength in dry condition: 441.80 MPa; the maximum adsorption capacities of precious ions: 1207.66 and 653.59 mg Ag g−1). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44965.

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