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采用预辐射接枝法,将N?异丙基丙烯酰胺(N-Isopropylacryamide,NIPAAm)接枝于聚丙烯纤维。研究了不同条件下接枝纤维对亚铁离子的吸附和解吸附情况。结果表明,在较低温度(5℃)及pH≈0条件下,接枝纤维对金属离子(Fe2+)具有良好的吸附性能;而在较高温度(50℃)下pH≈3时,被吸附的Fe2+几乎能被较完全解脱下来。
N-Isopropylacryamide (NIPAAm) was grafted onto polypropylene fibers by a pre-irradiation grafting method. The adsorption and desorption of ferrous ions by grafted fibers under different conditions were studied. The results showed that the grafted fibers had good adsorption properties on metal ions (Fe2 +) at lower temperature (5 ℃) and pH≈0, while at pH≈3 at higher temperature (50 ℃) Fe2 + can be almost completely relieved.