Open Access

ARTICLE

Preparation of Phytic Acid Modified Polyurethane Wet Spinning Fibers for Application in Pb²⁺ Adsorption

YINCHUN FANG^1,*, XINHUA LIU^1,2,*, XIAO WU¹, XUCHEN TAO¹

1 College of Textile and Clothing, Anhui Polytechnic University, Wuhu 241000, China;
2 Technology Public Service Platform for Textile Industry of Anhui Province, Wuhu 241000, China

* Corresponding Authors: e-mail: , .

Journal of Polymer Materials 2018, 35(4), 497-506. https://doi.org/10.32381/JPM.2018.35.04.8

Abstract

Polyurethane (PU) possesses excellent mechanical properties which has been used as the matrix for heavy metal ions removal. However, it has poor adsorption capacity due to there doesn’t exist chelating groups. In this study, phytic acid modified polyurethane (PU) fibers have been successfully prepared by wet spinning which was used for Pb²⁺ removal. The modified fibers achieved the highest adsorption capacity under the conditions of the mass ratio of phytic acid and PU was 5:7, the pH of Pb²⁺ solution was 6 and the adsorption temperature was 20 °C. The adsorption process of Pb²⁺ by phytic acid modified PU fibers belongs to monolayer adsorption. The saturated Pb²⁺ adsorption capacity of the modified PU fibers was over 7 times higher than the pure one’s. Phytic acid modified PU fibers could greatly improve the adsorption capacity of Pb²⁺ which could be used as the potential adsorbent for heavy metal ions removal.

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