Poly (lactic acid)/titanium dioxide composites: Preparation and performance under ultraviolet irradiation

Compatibilization and ultraviolet blocking of PLA/PCL blends via interfacial localization of titanium dioxide nanoparticles

“…TiO 2 shows its characteristic spectrum with the fundamental absorption of the TiO bond in the UV light range from 200 to 400 nm, so it has its main application as a UV blocker . The higher the TiO 2 content the greater is the absorption in all UV region, which could be attributed to the band gap of TiO 2 anatase (3.2 eV) corresponding to the UV absorption under 390 nm . The nanocomposites with 3.0% of TiO 2 absorb more than 40% of UV light, peaking in 300 nm, which corresponds to the UV‐B region, the most energetic component of UV light that causes photochemical degradation in polymeric materials.…”

Data on Specific Polymers

“…589 Poly(lactic acid)/anatase or rutile titanium dioxide composites were prepared in a form of thin films. 590 The UV absorbance results exhibit a UV shielding effect of rutile TiO 2 and degradation acceleration effect of anatase TiO 2 when particles are embedded in thin films of PLA matrix. 590 But in the thick films, the mechanical property results only exhibit a UV shielding effect of both rutile TiO 2 and anatase TiO 2 particles.…”

“…590 But in the thick films, the mechanical property results only exhibit a UV shielding effect of both rutile TiO 2 and anatase TiO 2 particles. 590 …”

Influence of functional nanoparticles on the photostability of polymer materials: Recent progress and further applications

“…Photodegradation of PLA/TiO 2 nanocomposite films showed that the nanocomposites could be efficiently photodegraded by UV irradiation compared to pristine PLA [45]. Depending on the TiO 2 phase (rutile or anatase) the anti-UV performance of the resulting material can be improved [47].…”