High-density polyethylene/ultrahigh-molecular-weight polyethylene blend. I. The processing, thermal, and mechanical properties

K. L.K. Lim, Z. A. Mohd Ishak, U. S. Ishiaku, A. M.Y. Fuad, A. H. Yusof, T. Czigany, B. Pukanszky, D. S. Ogunniyi

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Various blend ratios of high-density polyethylene (HDPE) and ultrahigh-molecular-weight polyethylene (UHMWPE) were prepared with the objective of determining their suitability as biomaterials. Although the presence of HDPE in the blends enabled melt processing, the presence of UHMWPE helped to improve the toughness of the resulting blends. The processability of the blends was investigated with the Brabender torque, which was used as an indication of the optimum blend conditions. The blends were characterized with differential scanning calorimetry. The mechanical tests performed on the blends included tensile, flexural, and impact tests. A 50:50 (w/w) blend yielded optimum properties in terms of the processability and mechanical properties. The tensile property of the 50:50 blend was intermediate between those of HDPE and UHMWPE, but the strain at break increased 200% in comparison with that of both neat resins. The energy at break of the 50:50 blend revealed an improvement in the toughness. The fracture mechanism was also investigated with scanning electron microscopy.

Original languageEnglish
Pages (from-to)413-425
Number of pages13
JournalJournal of Applied Polymer Science
Volume97
Issue number1
DOIs
Publication statusPublished - Jul 5 2005

Keywords

  • Biomaterials
  • Blends
  • Polyethylene (PE)
  • Processing
  • Toughness

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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