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

IRMM531C

Titanium, IRMM^®, certified reference material, 0.5 mm wire

224227

Sigma-Aldrich

Titanium(IV) oxide, rutile, powder, <5 μm, ≥99.9% 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

267902

Sigma-Aldrich

Titanium, wire, diam. 0.81 mm, 99.7% trace metals basis

369489

Sigma-Aldrich

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

IRMM531B

Titanium, IRMM^®, certified reference material, 0.5 mm foil

GF50624434

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

GF48167590

Titanium, tube, 100mm, outside diameter 6.1mm, inside diameter 5.1mm, wall thickness 0.5mm, annealed, 99.6+%

GF64061760

Titanium, rod, 1000mm, diameter 16mm, annealed, 99.6+%

GF94150593

Titanium, wire reel, 10m, diameter 1.5mm, as drawn, 99.6+%

GF82635138

Titanium, tube, 500mm, outside diameter 6.35mm, inside diameter 5.53mm, wall thickness 0.41mm, annealed, 99.6+%

GF03838282

Titanium, rod, 500mm, diameter 1.5mm, annealed, 99.6+%

GF65336700

Titanium, rod, 200mm, diameter 2mm, annealed, 99.6+%

GF25290581

Titanium, tube, 1000mm, outside diameter 25.4mm, inside diameter 23.62mm, wall thickness 0.89mm, annealed, 99.6+%

GF55775975

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

637262

Sigma-Aldrich

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

GF76772391

Titanium, rod, 100mm, diameter 10mm, annealed, 99.6+%

GF04909653

Titanium, rod, 50mm, diameter 20mm, as drawn, 99.99+%

GF65694426

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

GF62977540

Titanium, tube, 200mm, outside diameter 2.03mm, inside diameter 1.63mm, wall thickness 0.2mm, annealed, 99.6+%

GF29584187

Titanium, tube, 500mm, outside diameter 2.03mm, inside diameter 1.55mm, wall thickness 0.24mm, annealed, 99.6+%

GF66991179

Titanium, rod, 100mm, diameter 2mm, as drawn, 99.99+%

GF10374678

Titanium, rod, 500mm, diameter 5mm, annealed, 99.6+%

GF72193114

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

GF28411703

Titanium, tube, 100mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%

GF71783354

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

GF90731505

Titanium, tube, 500mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%

GF51690663

Titanium, wire reel, 5m, diameter 0.5mm, as drawn, 99.6+%

GF31127712

Titanium, rod, 10mm, diameter 50mm, 99.99+%

GF34106363

Titanium, rod, 1000mm, diameter 1.5mm, annealed, 99.6+%