6Lee Y H,Wang K H,Park C B,Sain M.Effects of clay dispersion on the foam morphology of LDPE/clay nanocomposites[J].Appl Polym Sci,2007,103(4):2129-2134.
7Shen J,Zeng C,Lee L J.Synthesis of polystyrene-carbon nanofibers nanocomposite foams[J].Polymer,2005,46(14):5218-5224.
