Morphology and physical properties of polyethylene/silicate nanocomposite prepared by melt intercalation
- Morphology and physical properties of polyethylene/silicate nanocomposite prepared by melt intercalation
- 구종민; 왕기현; 최민호; Mingzhe Xu; 정인재; 장민철; 최순웅; 송현훈
- Issue Date
- Journal of polymer science Part B, Polymer physics
- VOL 40, NO 14, 1454-1463
- Maleated polyethylene (PEMA)/silicate nanocomposites with a different aspect ratio of silicate and maleated PEMA/SiO2 composite were prepared by melt intercalation. The nanocomposites with a high aspect ratio silicate (montmorillonite) showed a faster decrease in the terminal slope of the storage modulus and a steeper increase in complex viscosity than those with a low aspect ratio silicate (laponite) and SiO2. The addition of montmorillonite increases the crystallization and the melting temperature of PEMA but decreases above 3 vol % of the silicate content because of the increased viscosity. The nanocomposite with montmorillonite showed the highest yield strength and secant modulus among the composites because of the highest aspect ratio of the filler. It also revealed strong interfacial adhesion with the matrix and orientation during tensile deformation.
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