Toughness of high-density polyethylene with hard filler particles

B.A.G. Schrauwen, L.E. Govaert, H.E.H. Meijer

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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 languageEnglish
Title of host publicationPPS-17 : the Polymer Processing Society seventeenth annual meeting, May 21-24, 2001, Montreal, Canada : conference proceedings / Ed. L. Leblanc
EditorsL. Leblanc
Place of PublicationMontreal
PublisherPolymer Processing Society
Publication statusPublished - 2001
Event17th Annual Meeting of the Polymer Processing Society (PPS-17) - Montreal, Canada
Duration: 21 May 200124 May 2001
Conference number: 17


Conference17th Annual Meeting of the Polymer Processing Society (PPS-17)
Abbreviated titlePPS


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