Highly transparent nanocomposite films from water-based poly(2-ethyl-2-oxazoline)/TiO2 dispersions

作者：Colombo Annalisa^*; Tassone Francesco; Mauri Michele; Salerno Domenico; Delaney John K; Palmer Michael R; De La Rie Rene; Simonutti Roberto

来源：RSC Advances, 2012, 2(16): 6628-6636.

DOI：10.1039/c2ra20571h

Aqueous dispersions containing TiO2 nanoparticles and hydrophilic poly(2-ethyl-2-oxazoline) allow the preparation of highly transparent nanocomposites containing up to 44 wt% of TiO2. Transmission Electron Microscopy (TEM) images indicate that the nanoparticles are homogeneously distributed in the polymeric matrix with no significant agglomeration. Nanocomposite films remain highly transparent to visible light, absorb the ultraviolet (UV) radiation, and their refractive indices can be regulated in the range from 1.52 to 1.65 by the content of TiO2 nanoparticles. While specular gloss measurements reveal an increase of the root-mean-square (RMS) surface roughness with TiO2 content, distinctness-of-image gloss measurements demonstrate that it does not negatively affect the image information carried by the underlying layer.

• 出版日期2012