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Synthesis and characterization of chitosan/curcumin blends based polyurethanes.

Fatima Zia1, Khalid Mahmood Zia1, Mohammad Zuber1

  • 1Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan.

International Journal of Biological Macromolecules
|August 8, 2016
PubMed
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New polyurethanes (PUs) incorporating chitosan and curcumin exhibit enhanced thermal stability, mechanical properties, and significant antimicrobial activity. These biocompatible materials show promise for biomedical applications.

Keywords:
ChitosanCurcuminPolyurethane

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Area of Science:

  • Polymer Science
  • Materials Science
  • Biomaterials

Background:

  • Polyurethanes (PUs) are versatile polymers with diverse applications.
  • Incorporating natural compounds can enhance PU properties and introduce new functionalities.
  • Chitosan (CH) and curcumin (CUR) are natural polymers with known biological activities.

Purpose of the Study:

  • To synthesize novel polyurethanes (PUs) based on hexamethylene diisocyanate (HMDI) and hydroxyl-terminated polybutadiene (HTPB).
  • To investigate the effect of incorporating varying ratios of chitosan (CH) and curcumin (CUR) on PU properties.
  • To evaluate the potential of these modified PUs for biomedical applications.

Main Methods:

  • Step-growth polymerization was employed to synthesize the PU blends.
  • Fourier-transform infrared spectroscopy (FTIR) was used for structural analysis.
  • Scanning electron microscopy (SEM) assessed surface morphology and dispersion.
  • Thermogravimetric analysis (TGA) evaluated thermal stability.
  • Mechanical testing determined modulus and tensile strength.
  • Antimicrobial activity was assessed.

Main Results:

  • FTIR confirmed the successful incorporation of CH and CUR into the PU backbone.
  • SEM revealed homogeneous dispersion of CH and CUR within the PU matrix.
  • Optimal thermal stability was observed with a 0.25M:0.75M ratio of chitosan to curcumin.
  • Enhanced mechanical properties (modulus, tensile strength) were achieved with higher CH and CUR content.
  • A specific composition (1mol BDO, 0.75mol CH, 0.25mol CUR) demonstrated substantial antimicrobial activity.

Conclusions:

  • Novel HMDI and HTPB-based PUs were successfully synthesized with integrated chitosan and curcumin.
  • The incorporation of CH and CUR significantly improved thermal stability, mechanical strength, and introduced antimicrobial properties.
  • These modified PUs represent promising biocompatible materials for advanced biomedical applications.