Crystallization properties of polycaprolactone composites filled with nanometer calcium carbonate

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

Polycaprolactone (PCL) composites filled with nanometer calcium carbonate (nano-CaCO3) were prepared by means of a twin-screw extruder in this study. The nano-CaCO3 surface treated with stearate. The crystalline properties of the PCL/nano-CaCO3 composites were measured with a differential scanning calorimeter to identify the influence of the nanometer filler content on the crystalline properties. The results show that the crystallization onset temperature, crystallization temperature, and crystallization end temperature of the composites were obviously higher than those of the unfilled PCL resin, and the crystallization degree (χc) of the composites increased with increasing particle weight fraction (φf) when φf was more than 1%. When φf was 1%, χc of the composite was less than that of the unfilled PCL resin. Moreover, the dispersion of the inclusions in the matrix was observed by means of scanning electron microscopy.
Original languageEnglish
Pages (from-to)2940-2944
Number of pages5
JournalJournal of Applied Polymer Science
Volume128
Issue number5
DOIs
Publication statusPublished - 5 Jun 2013

Keywords

  • composites
  • crystallization
  • differential scanning calorimetry (DSC)
  • nanostructured polymers

ASJC Scopus subject areas

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

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