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

248576

Sigma-Aldrich

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204757

Sigma-Aldrich

Titanium(IV) oxide, rutile, ≥99.98% trace metals basis

232033

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204730

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460400

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224227

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369489

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Titanium, foil, thickness 2.0 mm, 99.7% trace metals basis

637254

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Titanium(IV) oxide, anatase, nanopowder, <25 nm particle size, 99.7% trace metals basis

637262

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Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis

634662

Sigma-Aldrich

Titanium(IV) oxide, mixture of rutile and anatase, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis

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

GF84917188

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

GF71020235

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

GF62738006

Titanium, tube, 500mm, outside diameter 0.81mm, inside diameter 0.61mm, wall thickness 0.1mm, as drawn, 99.6+%

GF06813525

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

GF16031843

Titanium, mesh, 100x100mm, nominal aperture 0.19mm, wire diameter 0.23mm, 60x60 wires/inch, open area 20%, twill weave

GF90963928

Titanium, rod, 25mm, diameter 50mm, 99.99+%

GF13900205

Titanium, tube, 100mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%

GF65515024

Titanium, tube, 1000mm, outside diameter 12.7mm, inside diameter 10.9mm, wall thickness 0.9mm, annealed, 99.6+%

GF03916290

Titanium, rod, 490mm, diameter 2mm, annealed, 99.6+%

GF41437830

Titanium, tube, 100mm, outside diameter 1.05mm, inside diameter 0.75mm, wall thickness 0.15mm, annealed, 99.6+%

GF65694426

Titanium, tube, 100mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%

GF40775610

Titanium, wire reel, 1m, diameter 0.20mm, annealed, 99.6+%

GF47404201

Titanium, wire reel, 5m, diameter 0.20mm, annealed, 99.6+%

GF91672139

Titanium, wire reel, 20m, diameter 0.05mm, hard, 99.8%

GF43519945

Titanium, wire reel, 2m, diameter 1.0mm, as drawn, 99.99+%

GF34996685

Titanium, wire reel, 200m, diameter 0.125mm, annealed, 99.6+%

GF96391402

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

GF43403431

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