Open AccessUV absorption by cerium oxide nanoparticles/epoxy composite thin films
Author(s) -
Đào Ngọc Nhiệm,
Minh Dai Luu,
Quang Nguyen,
Byung Sun Kim
Publication year - 2011
Publication title -
advances in natural sciences nanoscience and nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.476
H-Index - 40
ISSN - 2043-6262
DOI - 10.1088/2043-6262/2/4/045013
Subject(s) - materials science , cerium oxide , epoxy , ultimate tensile strength , nanoparticle , absorption (acoustics) , scanning electron microscope , composite material , absorption spectroscopy , composite number , dispersion (optics) , chemical engineering , oxide , nanotechnology , optics , metallurgy , physics , engineering
Cerium oxide ( CeO 2 ) nanoparticles have been used to modify properties of an epoxy matrix in order to improve the ultra-violet (UV) absorption property of epoxy thin films. The interdependence of mechanical properties, UV absorption property and the dispersed concentration of CeO 2 nanoparticles was investigated. Results showed that, by increasing the dispersed concentration of CeO 2 nanoparticles up to 3 wt%, tensile modulus increases while two other mechanical properties, namely tensile strength and elongation, decrease. The UV absorption peak and the absorption edges of the studied thin films were observed in the UV-Vis absorption spectra. By incorporating CeO 2 nanoparticles into the epoxy matrix, an absorption peak appears at around 318 nm in UV-Vis spectra with increasing CeO 2 concentration from 0.1 to 1.0 wt%. Scanning electron microscopy (SEM) images revealed that a good dispersion of nanoparticles in the epoxy matrix by an ultrasonic method was achieved.