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通过辐射接枝的方法在聚丙烯(PP)纤维上接枝丙烯酸单体,涂覆硅酸钠后经氯化钙交联得到接枝硅酸钙的PP功能化纤维(PP-g-CaSiO3)。红外光谱(IR)和扫描电镜图(SEM)表明硅酸钙成功地接枝到PP纤维表面。BET测试表明,当接枝率为46%时,PP-g-CaSiO3的比表面积高达376.64m2/g。PP-g-CaSiO3对水中双酚A(BPA)表现出良好的吸附性能,饱和吸附量达到39.23mg/g,吸附等温线满足Langmuir模型,吸附动力学符合二级动力学模型。

The functional fiber(PP-g-CaSiO3) was prepared by coating of sodium silicate(Na2SiO3) and then crosslinking of calcium chloride(CaCl2) on the acrylic acid(AA) grafted polypropylene(PP) fiber.FT-IR spectroscopy,BET measurement and scanning electron microscopy(SEM) analysis indicated that CaSiO3 was successfully grafted onto polypropylene fiber,and the specific surface area of fiber increased significantly.The adsorption of bisphenol A(BPA) on PP-g-CaSiO3 was also studied.The results showed that the data of BPA adsorption on the fiber sample were fitted to the Langmuir isotherm model and second-order kinetics equation,and its saturated adsorption capacity reached 39.23mg/g.

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