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Wang, W.-W., Man, C.-Z., Zhang, C.-M., Jiang, L., Dan, Y. & Nguyen, T.-P. (2013) Stability of poly(L-lactide)/TiO2 nanocomposite thin films under UV irradiation at 254 nm. Polym. Degrad. Stabil. 98 885–893. 
Added by: Laurent Cournède (2016-03-10 21:23:31)
Type de référence: Article
DOI: 10.1016/j.polymdegradstab.2013.01.003
Numéro d'identification (ISBN etc.): 0141-3910
Clé BibTeX: Wang2013
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Catégories: PMN
Mots-clés: acid), anatase, Anatase titania, Composites, crystallization, dioxide, hydrolytic degradation, multiple melting behavior, nanocomposite, nanoparticles, Poly(L-lactide), rutile, Rutile titania, Stability, UV irradiation
Créateurs: Dan, Jiang, Man, Nguyen, Wang, Zhang
Collection: Polym. Degrad. Stabil.
Consultations : 2/452
Indice de consultation : 2%
Indice de popularité : 0.5%
Poly(L-lactide)/titania (PLLA/TiO2) nanocomposites were in situ synthesized through ring-opening polymerization of L-lactide. Two types of TiO2, anatase and rutile, were used in the synthesis of composites. The chemical structure, crystallinity, thermal stability and morphology of composite thin films were analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The effects of TiO2 on the stability of the nanocomposites under UV irradiation as a function of time were investigated by FTIR, XRD, UV absorption spectroscopy and differential scanning calorimetry (DSC). The obtained results indicated that rutile TiO2 particles have a screening effect while anatase TiO2 acts as a photocatalyst The DSC results revealed that anatase TiO2 embedded in bulk of the films produces the same effect as rutile TiO2. (C) 2013 Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède  
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