Preparation and characterization of a stereocomplex of poly(lactide-co-ε-caprolactone)/tricalcium phosphate biocomposite using supercritical fluid technology

R. I. Nurqadar, P. Purnama, Soo Hyun Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A novel biocomposite material from a stereocomplex of poly (L-lactide-co-ε-caprolactone) (PLLCL) and poly (D-lactide-co-ε-caprolactone) (PDLCL) and inorganic tricalcium phosphate (TCP) was prepared by supercritical fluid method. Both pristine and poly (L-lactide)-grafted-TCP (PLLA-g-TCP) were used. PLLA-g-TCP was produced by ring-opening polymerization of L-lactide in the presence of surface-activated TCP. Infrared (IR) spectroscopy and scanning electron microscopic (SEM) images confirm the attachment of PLLA onto the activated TCP surface. The stereocomplex formation of biocomposite was confirmed by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The biocomposite containing PLLA-g-TCP has higher stereocomplex degree and more homogeneous TCP distribution compared to the biocomposite containing pristine TCP. The presence of PLLA-g-TCP in the stereocomplex PLLCL-PDLCL (s-PDLCL) enhance the stereocomplex degree up to a certain content and also supports the homogeneous TCP dispersion in the stereocomplex matrix. These phenomena support the improvement in mechanical properties of the s-PDLCL composite the optimum content of PLLA-g-TCP being 10%. The biocomposites containing TCP materials are promising materials for biomedical application, especially for bone tissue engineering.

Original languageEnglish
Pages (from-to)974-983
Number of pages10
JournalExpress Polymer Letters
Volume7
Issue number12
DOIs
Publication statusPublished - 2013 Dec 1

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Keywords

  • Biocomposites
  • Biodegradable polymers
  • Polylactide
  • Stereocomplex

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Chemical Engineering(all)
  • Organic Chemistry
  • Physical and Theoretical Chemistry

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