Cellulose Acetate Incorporating Organically Functionalized CeO2NPs: Efficient Materials for UV Filtering Applications

被引：77

作者：

Culica, Madalina Elena ^{[1
]}

Chibac-Scutaru, Andreea L. ^{[1
]}

Melinte, Violeta ^{[1
]}

Coseri, Sergiu ^{[1
]}

机构：

[1] Romanian Acad, Petru Poni Inst Macromol Chem, 41 A Grigore Ghica Voda Alley, Iasi 700487, Romania

来源：

MATERIALS | 2020年 / 13卷 / 13期

关键词：

cellulose acetate; UV shielding; cerium; nanoparticle; materials; PHOTOCATALYTIC ACTIVITY; SURFACE MODIFICATION; CERIA NANOPARTICLES; CEO2; NANOPARTICLES; TIO2; NANOCOMPOSITES; ABSORPTION; OXIDE; RAMAN; SIZE;

D O I：

10.3390/ma13132955

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

One of the major issues faced when constructing various materials incorporating inorganic nanoparticles (NPs) is aggregation leading to loss of their final activity. In our work, cellulose acetate (CA) has been used to serve as matrix for the synthesis of UV-shielding and transparent films containing various amounts (1-5 wt.%) of cerium oxide (CeO2) NPs. In order to attain an improved dispersion and a better connectivity between NPs and the cellulose matrix, the surface of CeO(2)NPs have been previously functionalized by the reaction with 3-aminopropyl(diethoxy)methylsilane (APDMS). The uniform dispersion of the NPs in the homogeneous thin films has been evidenced by using Transmission Electron Microscopy (TEM) and Fourier Transformation Infrared Spectroscopy (FTIR) characterization. The investigation of the optical properties for the hybrid films through UV-Vis spectroscopy revealed that the presence of CeO(2)NPs in the CA matrix determined the appearance of strong UV absorption bands in the region 312-317 nm, which supports their use as efficient UV absorbers. This study has shown that UV shielding ability of the nanocomposites can be easily tuned by adjusting the numberof inorganic NPs in the CA template.

引用

页码：1 / 15

页数：15

共 52 条

[1] In Situ Synthesis of Hybrid Inorganic-Polymer Nanocomposites [J].