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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(IV) oxide, mixture of rutile and anatase, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H2O, 99.5% trace metals basis
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Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, mixture of rutile and anatase, nanopowder, <100 nm particle size (BET), 99.5% 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, 99.995% trace metals basis
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Titanium, wire, diam. 0.81 mm, 99.7% trace metals basis
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Titanium, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)
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Titanium, foil, thickness 0.025 mm, 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, foil, thickness 2.0 mm, 99.7% trace metals basis
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Titanium, wire, diam. 0.25 mm, 99.7% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, rutile, ≥99.98% trace metals basis
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Titanium, foil, thickness 0.127 mm, 99.7% trace metals basis
Titanium, microfoil, disks, 25mm, thinness 0.25μm, specific density 112.6μg/cm2, permanent mylar 3.5μm support, 99.6+%
Titanium, rod, 200mm, diameter 3.0mm, annealed, 99.6+%
Titanium, rod, 200mm, diameter 9.5mm, annealed, 99.99+%
Titanium, tube, 100mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%
Titanium, tube, 100mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%
Titanium, tube, 200mm, outside diameter 25.4mm, inside diameter 23.62mm, wall thickness 0.89mm, annealed, 99.6+%
Titanium, rod, 1000mm, diameter 3.0mm, annealed, 99.6+%
Titanium, mesh, 100x100mm, nominal aperture 0.19mm, wire diameter 0.23mm, 60x60 wires/inch, open area 20%, twill weave
Titanium, rod, 200mm, diameter 16mm, annealed, 99.6+%
Titanium, rod, 100mm, diameter 2mm, annealed, 99.6+%
Titanium, microfoil, disks, 25mm, thinness 0.5μm, specific density 225.4μg/cm2, permanent mylar 3.5μm support, 99.6+%
Titanium, rod, 100mm, diameter 9.5mm, annealed, 99.99+%
Titanium, rod, 100mm, diameter 2mm, as drawn, 99.99+%
Titanium, rod, 10mm, diameter 50mm, 99.99+%
Titanium, rod, 200mm, diameter 4mm, annealed, 99.6+%