Preparation and characterization of polystyrene‐grafted attapulgite via surface‐initiated redox polymerization. Issue 4 (30th June 2014) - Zhang, Liu
Abstract : Polystyrene‐grafted attapulgite (ATP‐g‐PS) was prepared using surface‐initiated redox initiation via graft from approach. ATP was modified with (3‐aminopropyl) triethoxysilane (APTES) to anchor amine on the surface (ATP‐NH2 ), and then ATP‐NH2 was further treated with 4‐(diethylamino) salicylaldehyde (DEAS) to give aromatic tertiary amine groups functional ATP (ATP‐ATA). Subsequently, the surface‐initiated redox polymerization of styrene in the presence of ATP‐ATA and benzoyl peroxide (BPO) was performed to affordATP‐g‐PS . The chemical grafting of PS on the surface of ATP was confirmed by Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, andthermogravimetric analysis . The crystal structure of PS‐grafted ATP was characterized by X‐ray diffraction (XRD) analysis.The morphology of ATP‐g‐PS was observed byscanning electron microscopy (SEM) . POLYM. ENG. SCI., 55:889–895, 2015. © 2014 Society of Plastics Engineers