Enhancement of mechanical and thermal properties of Polycaprolacton/Chiton blend by calcium carbonate nanoparticle
Abdolmohammadi, Sanaz and Siyamak, Samira and Ibrahim, Nor Azowa and Wan Yunus, Wan Md Zin and Ab. Rahman, Mohamad Zaki and Azizi, Susan and Fatehi, Asma (2012) Enhancement of mechanical and thermal properties of Polycaprolacton/Chiton blend by calcium carbonate nanoparticle. International Journal of Molecular Sciences, 13 (4). pp. 4508-4522. ISSN 1422-0067
Official URL: http://dx.doi.org/10.3390/ijms13044508
This study investigates the effects of calcium carbonate (CaCO3) nanoparticles on the mechanical and thermal properties and surface morphology of polycaprolactone (PCL)/chitosan nanocomposites. The nanocomposites of PCL/chitosan/CaCO3 were prepared using a melt blending technique. Transmission electron microscopy (TEM) results indicate the average size of nanoparticles to be approximately 62 nm. Tensile measurement results show an increase in the tensile modulus with CaCO3 nanoparticle loading. Tensile strength and elongation at break show gradual improvement with the addition of up to 1 wt% of nano-sized CaCO3. Decreasing performance of these properties is observed for loading of more than 1 wt% of nano-sized CaCO3. The thermal stability was best enhanced at 1 wt% of CaCO3 nanoparticle loading. The fractured surface morphology of the PCL/chitosan blend becomes more stretched and homogeneous in PCL/chitosan/CaCO3 nanocomposite. TEM micrograph displays good dispersion of CaCO3 at lower nanoparticle loading within the matrix.
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