Abstract
The impact toughness of high-density polyethylene modified with calcium carbonate particles was investigated for different processing conditions. The increase in toughness differed not only between compression and injection moulded samples, but also between samples with different position in an injection moulded bar, and injected with different temperature during the injection moulding process. Therefore, the influence of crystal orientation was investigated, as influenced by the processing conditions used. It was found that the effectiveness of hard filler particles on improved impact toughness of HDPE is dominantly controlled by flow induced crystal orientation, rather than by heterogeneous nucleation on the particle surface. The resulting crystal orientation obtained by injection moulding is complex and the anisotropic nature of the crystallized matrix becomes more pronounced once the material is tested perpendicular to the flow direction. The large increase in impact properties is almost completely lost here.
| Original language | English |
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| Title of host publication | PPS-17 : the Polymer Processing Society seventeenth annual meeting, May 21-24, 2001, Montreal, Canada : conference proceedings / Ed. L. Leblanc |
| Editors | L. Leblanc |
| Place of Publication | Montreal |
| Publisher | Polymer Processing Society |
| Pages | 187-193 |
| Publication status | Published - 2001 |
| Event | 17th Annual Meeting of the Polymer Processing Society (PPS-17) - Montreal, Canada Duration: 21 May 2001 → 24 May 2001 Conference number: 17 |
Conference
| Conference | 17th Annual Meeting of the Polymer Processing Society (PPS-17) |
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| Abbreviated title | PPS |
| Country/Territory | Canada |
| City | Montreal |
| Period | 21/05/01 → 24/05/01 |