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  • Characterisation and thermal properties of titanium dioxide nanoparticles-containing biodegradable polylactide composites synthesized by sol-gel method.

Characterisation and thermal properties of titanium dioxide nanoparticles-containing biodegradable polylactide composites synthesized by sol-gel method.

Journal of nanoscience and nanotechnology (2014-04-18)
Nikiwe Mhlanga, Suprakas Sinha Ray
ABSTRACT

This study reports the synthesis, characterisation and thermal properties of polylactide (PLA)/titanium dioxide nanoparticles (TiO2 NPs) composites using the sol-gel method. The percentage weight of TiO2 NP sol was varied from 3, 8, 11 and 14. The synthesised composites were characterised using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction, energy dispersive X-ray spectroscopy (EDS), thermogravimetric analysis and dynamic mechanical analysis. Encapsulation of the TiO2 into the PLA matrix was attainable based on the SEM images and the FTIR and EDS results. The thermal stability of the composites was shifted to lower temperatures due to photodegradation induced by the metal oxide on the PLA chain. Both PLA and TiO2 NPs have potential in drug delivery because of their biocompatibility and biodegradability.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Titanium, foil, thickness 0.025 mm, 99.98% trace metals basis
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Titanium, IRMM®, certified reference material, 0.5 mm wire
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Titanium(IV) oxide, rutile, ≥99.98% trace metals basis
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Titanium, wire, diam. 1.0 mm, 99.99% trace metals basis
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Titanium(IV) oxide, rutile, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm
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Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis
Titanium, tube, 500mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%
Titanium, tube, 1000mm, outside diameter 6.35mm, inside diameter 4.57mm, wall thickness 0.89mm, annealed, 99.6+%
Titanium, tube, 1000mm, outside diameter 6.35mm, inside diameter 5.53mm, wall thickness 0.41mm, annealed, 99.6+%
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Titanium, wire, diam. 0.81 mm, 99.7% trace metals basis
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Titanium, foil, thickness 0.127 mm, 99.7% trace metals basis
Titanium, tube, 1000mm, outside diameter 1.05mm, inside diameter 0.75mm, wall thickness 0.15mm, annealed, 99.6+%
Titanium, microfoil, disks, 25mm, thinness 0.5μm, specific density 225.4μg/cm2, permanent mylar 3.5μm support, 99.6+%
Titanium, tube, 1000mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%
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Titanium, microfoil, disks, 10mm, thinness 1.0μm, specific density 429μg/cm2, permanent mylar 3.5μm support, 99.6+%
Titanium, rod, 100mm, diameter 6mm, annealed, 99.6+%
Titanium, tube, 200mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%
Titanium, wire reel, 0.5m, diameter 0.25mm, as drawn, 99.99+%
Titanium, rod, 100mm, diameter 9.5mm, annealed, 99.99+%
Titanium, wire reel, 1m, diameter 0.25mm, as drawn, 99.6+%