Strength of cellulosic fiber/starch acetate composites with variable fiber and plasticizer content

Roberts Joffe, Bo Madsen, Kalle Nättinen, Arttu Miettinen

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In this experimental study, the performance of injection-molded short flax and hemp fibers in plasticized starch acetate were analyzed in terms of strength. Parameters involved in the analysis are a variable fiber and plasticizer content. The measured strength of the composites varies in the range of 12–51 MPa for flax fibers and 11–42 MPa for hemp fibers, which is significantly higher than the properties of the unreinforced starch acetate matrix. The micro-structural parameters used in modeling of composite strength were obtained from optical observations and indirect measurements. Some of these parameters were qualitatively verified by X-ray microtomography.
Original languageEnglish
JournalJournal of Composite Materials
Issue number8
Pages (from-to)1007–1017
Publication statusPublished - 2015


  • Cellulosic fibers
  • Starch acetate
  • Plasticizer
  • Biocomposites
  • Strength

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