| 초록 |
Ethylene-modified latexes were prepared by the emulsion polymerization of styrene and n-butyl methacrylate using poly(ethylene-co-acrylic acid) (EAA), [Mn: 18, 800, acid number: 140], as a polymeric emulsifier, respectively. The EAA-grafted-PS in-situ-formed during emulsion polymerization lead to the improvement of miscibility between EAA and PS. The dynamic mechanical properties of the ethylene-modified PS films exhibit single glass transition temperature (Tg) values, thus conforming to the law of miscibility. The grafted and sticking EAA into the particles improved the barrier properties, such as chemical resistance and water permeability, and mechanical property of ethylene-modified PS and poly(n-butyl methacrylate) (PBMA) films.
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