Preparation and characterization of polystyrene‐grafted attapulgite via surface‐initiated redox polymerization

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 afford ATP‐g‐PS. The chemical grafting of PS on the surface of ATP was confirmed by Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and thermogravimetric analysis. The crystal structure of PS‐grafted ATP was characterized by X‐ray diffraction (XRD) analysis. The morphology of ATP‐g‐PS was observed by scanning electron microscopy (SEM). POLYM. ENG. SCI., 55:889–895, 2015. © 2014 Society of Plastics Engineers

Preparation of polydimethylaminoethyl methacrylate grafted attapulgite via ceric ion‐induced redox polymerization

“…Variation of conversion, PG and GE with time is listed in Table . It can be found that PG and GE increase with polymerization time, and the highest experimental value of GE is approximately 51.3% in comparison with 21.2% in the research we have reported previously . Graft polymerization can contribute to the increase of PG substantially, even though the polymer grafting rate is smaller due to the relatively low concentration of the surface reactive sites.…”

“…Recently, we have reported the results of our research on the surface modification of ATP by graft polymerization via aliphatic amine‐ammonium persulfate, aromatic tertiary amine‐benzoyl peroxide redox system, and thiol‐caprolactam two‐component iniferter system . In this work, ATP was firstly modified to bear thiol groups, and then polydimethylaminoethyl methacrylate (PDMAEMA) was grafted from the surface of ATP by using a thiol‐Ce (IV) initiation system.…”

Rapid prototyping of multilayer thermoplastic microfluidic chip

“…The PS chip surface will be surface-amine functionalized by APTES solution, which is beneficial to the subsequent encapsulation. Thirdly, both of the PS chip and silicone film should be modified by plasma oxidation [14]. Finally, the PS chip should be attached to the silicone film.…”

Redox two-component initiated free radical and cationic polymerizations: Concepts, reactions and applications

“…Redox grafting has potential applications in membranes or in more exotic post-modified materials [285][286][287][288][289][290][291]. The synthesis of block copolymers via a redox polymerization process was reviewed by Ozturk et al a decade ago [293,294].…”