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

700347

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

634662

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635057

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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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204730

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204757

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266035

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460400

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224227

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Titanium, foil, thickness 0.127 mm, 99.7% trace metals basis

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Titanium, wire reel, 500m, diameter 0.20mm, annealed, 99.6+%

GF31085760

Titanium, wire reel, 5m, diameter 0.25mm, as drawn, 99.99+%

GF14377631

Titanium, wire reel, 25m, diameter 0.25mm, annealed, 99.6+%

GF96391402

Titanium, wire reel, 25m, diameter 0.20mm, annealed, 99.6+%

GF75518624

Titanium, wire reel, 20m, diameter 1.5mm, as drawn, 99.6+%

GF91204466

Titanium, wire reel, 5m, diameter 1.0mm, as drawn, 99.6+%

GF36425707

Titanium, wire reel, 200m, diameter 0.20mm, annealed, 99.6+%

GF84917188

Titanium, wire reel, 1m, diameter 0.25mm, as drawn, 99.99+%

GF76266423

Titanium, wire reel, 0.5m, diameter 1.0mm, annealed, 99.6+%

GF06813525

Titanium, wire reel, 1m, diameter 0.5mm, as drawn, 99.6+%

GF50624434

Titanium, wire reel, 200m, diameter 0.25mm, annealed, 99.6+%

GF52005596

Titanium, tube, 500mm, outside diameter 9.5mm, inside diameter 8.2mm, wall thickness 0.65mm, annealed, 99.6+%

GF16602768

Titanium, wire reel, 1m, diameter 0.5mm, as drawn, 99.99+%

GF55775975

Titanium, wire reel, 25m, diameter 0.25mm, as drawn, 99.6+%

GF71783354

Titanium, wire reel, 100m, diameter 0.75mm, as drawn, 99.6+%

GF72193114

Titanium, tube, 500mm, outside diameter 2.03mm, inside diameter 1.63mm, wall thickness 0.2mm, annealed, 99.6+%