Preparation of calcium silicate grafted polypropylene and its adsorption property for bisphenol A

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.