Melt density and flow property of PDLLA/nano-CaCO3 bio-composites

Ji Zhao Liang, Chak Yin Tang, Lin Zhou, Liu He, Chi Pong Tsui

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)


The nanometer calcium carbonate (nano-CaCO3) filled Poly-dl-lactide (PDLLA) bio-composites were prepared with a twin-screw extruder. The melt volume flow rates (MVRs) and melt densities of the composites were measured by means of a melt flow rate instrument under experimental conditions at a temperature range from 180 to 230 °C and a load range varying from 2.16 to 10 kg. The result showed that the MVRs of the composites increased nonlinearly with a rise in temperature and an increase of load, but decreased linearly with increasing the filler weight fraction. The melt densities of the composites decreased nonlinearly with a rise of temperature, but increased nonlinearly with increasing the load and increased linearly with an addition of the filler weight fraction.
Original languageEnglish
Pages (from-to)1897-1900
Number of pages4
JournalComposites Part B: Engineering
Issue number7
Publication statusPublished - 1 Oct 2011


  • A. Polymer-matrix composites
  • B. Rheological properties
  • E. Extrusion
  • E. Resin flow

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering


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