Preparation and Characterization of Poly(Dimethyl Diallyl Ammonium Chloride)/Modified SiO2 Spherical Brushes

Na Su; Zheng Min Cao

doi:10.4028/www.scientific.net/AMM.731.569

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 731Preparation and Characterization of Poly(Dimethyl...

Preparation and Characterization of Poly(Dimethyl Diallyl Ammonium Chloride)/Modified SiO₂ Spherical Brushes

Abstract:

Novel cationic spherical polyelectrolyte brushes (CSPB) consisting of γ-methacryloxypropyl trimethoxy-silane (KH-570) modified SiO₂ cores and poly (Dimethyl diallyl ammonium chloride) (PDMDAAC) brushes were prepared by conventional free radical polymerization. The resulting CSPB were characterized by Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), and Thermo-gravimetric analysis (TGA). After cleaving the polyelectrolyte chains from the anchoring surface, the molecular weight of brushes was 1.824×10³ gmol^-1 from Gel Permeation Chromatography (GPC) measurements.