| 摘要 |
A crystalline polyolefin blend comprising dispersed polyhedral oligomeric silsesquioxane (POSS) nanoparticles has improved packing of chains, high draw-down ratios, as well as improved tensile and yield strength. The blend is made by melt blending the polyolefin with the POSS in the presence of a sorbitol nucleating agent and cooling the mixture so that the nucleating agent serves as a template for the in-situ self assembly of dispersed POSS nanoparticles and the formation of very small crystalline polyolefin sites.
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