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http://dx.doi.org/10.7317/pk.2013.37.6.777

Spectroscopic Studies on the Reaction between Amino Groups on Silica Nanoparticle Surface and Glycidyl Methacrylate  

Lee, Sangmi (Department of Chemical Engineering, Keimyung University)
Ha, KiRyong (Department of Chemical Engineering, Keimyung University)
Publication Information
Polymer(Korea) / v.37, no.6, 2013 , pp. 777-783 More about this Journal
Abstract
We used dipodal type bis[3-(trimethoxysilyl)propyl]amine (BTMA) silane coupling agent to modify silica nanoparticles to introduce secondary amino groups on the silica surface. These grafted N-H groups were reacted with glycidyl methacrylate (GMA) to introduce polymerizable methacrylate groups on the silica surface. After modification reaction, we used several analytical techniques such as Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA) and solid state $^{13}C$ cross-polarization magic angle spinning (CP/MAS) nuclear magnetic resonance spectroscopy (NMR) to analyze the effects of reaction time, reaction temperature and used GMA concentration on the modification degree between N-H groups on the silica surface and epoxide groups of GMA. We found increased introduction of methacrylate groups on the silica surface by ring opening reaction of epoxide groups of GMA with N-H groups on BTMA treated silica with increased reaction time, reaction temperature and used GMA concentration within our experimental conditions.
Keywords
silica; bis[3-(trimethoxysilyl)propyl]amine; glycidyl methacrylate; hydrolysis; silanization;
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