Synthesis of Poly(methyl Methacrylate)-Silica Hybrid Materials through Activators Generated by Electron Transfer

Abstract:

Activators generated by electron transfer for atom transfer radical polymerization (AGET ATRP) of methyl methacrylate (MMA) on silica nanoparticles were conducted to create controllable shell on silica surfaces. SiO₂–Br, the macroinitiator, was prepared by the reaction of amido groups previously indroduced on silica with 2-bromoisobutyryl bromide, followed by the ATRP of MMA using CuBr as the catalyst and ascorbic acid (VC) as the reducing agent in the presence of a limited amount of air. The resulting particles were examined by SEM and TEM. The results indicated that the particles were composed of a silica core and a densely grafted outer poly(methyl methacrylate) (PMMA) layer.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 2185-2188
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.2185
• Online since: May 2011
• Authors: Shi Xin Du, Guo Wei Zhou, Xi Liang Wang, Lei Zhang
• Keywords: AGET ATRP, Ascorbic Acid, Silica, Surface Modification

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