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Synthesis and Characterization of St-AN-(KH-570) Block Macromolecular Coupling Agent Copolymers†

A new well-defined amphiphilic St-AN-(KH-570) block macromolecular coupling agent copolymers was successfully synthesized via free radical polymerization with styrene (St), acrylonitrile (AN) and γ -methacryloxypropyl trimethoxy silane (KH-570) in dimethylbenzene. The compositions of copolymers were confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. Thermal analysis by differential scanning calorimetry indicated that glass transition temperature (T g ) of macromolecular coupling agent is much lower than polystyrene and polyacrylonitrile. The synthesis possessed the number average molecular weights (M n ) of 1.05 × 10 4 by gel permeation chromatography with broad polydispersity index value of 2.48.