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Preparation of polydimethylaminoethyl methacrylate grafted attapulgite via ceric ion‐induced redox polymerization
Author(s) -
Xu Hang,
Yang Haicun,
Xue Sheng,
Pan Ji,
Ni Qingting,
Gong Fanghong
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42762
Subject(s) - redox , polymerization , polymer chemistry , methacrylate , materials science , chemical engineering , ion , chemistry , polymer , organic chemistry , composite material , engineering
Hybrid nanocomposites consisting of polydimethylaminoethyl methacrylate (PDMAEMA) and attapulgite (ATP) were prepared by using a surface thiol‐Ce (IV) redox initiation system via graft from approach. Initially, ATP was chemically modified with γ‐mercaptopropyltrimethoxysilane (MTS) to anchor thiol groups on the surface (ATP‐MTS). Subsequently, surface‐initiated polymerization of dimethylaminoethyl methacrylate was performed by using ATP‐MTS and cerium (IV) ammonium nitrate (CAN) in aqueous nitric acid (HNO 3 ) to afford hybrid particles (ATP‐g‐PDMAEMA). Evidence of grafting of PDMAEMA was confirmed by Fourier transform infrared spectroscopy (FTIR), X‐ray photoelectron spectroscopy (XPS), and Thermogravimetric Analysis (TGA). The crystal structure of PDMAEMA grafted ATP was characterized by X‐ray diffraction (XRD) analysis. Morphology of ATP‐g‐PDMAEMA was observed by transmission electron microscopy (TEM). The effects of concentration of Ce (IV), HNO 3 , and reaction temperature were examined by determining the percentage of grafting (PG). With other condition kept constant, the optimum conditions were obtained as follows: the reaction temperature was 50°C, Ce (IV) and HNO 3 concentrations were 12.5 mmol/L and 1 mol/L, respectively, when 0.2 g of ATP‐MTS, 1 mL of DMAEMA, and 4 mL of aqueous solution were used. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42762.