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Title: Synthesis of silica coated zinc oxide–poly(ethylene-co-acrylic acid) matrix and its UV shielding evaluation

Graphical abstract: - Highlights: • Well layer thickness controlled silica shell was made on ZnO nanoparticles. • PEAA, an interfacial agent is used to make nanocomposite–polymer matrix by twin-screw extruder. • Si-ZnO/PEAA matrix is highly stable and UV protective as compared to ZnO/PEAA matrix. • Nanoparticle embedded polymer matrix is suggested to make UV shielding fabrics with Nylon4. - Abstract: Silica coated zinc oxide nanoparticles (Si-ZnO NPs) (7 nm thick) were synthesized successfully and melt blended with poly(ethylene-co-acrylic acid) (PEAA resin) to improving ultraviolet (UV) shielding of zinc oxide nanoparticles (ZnO NPs). The photostability of both the ZnO NPs and Si-ZnO NPs were analyzed by the difference in photoluminescence (PL) and by methylene blue (MB) degradation. Photo-degradation studies confirmed that Si-ZnO NPs are highly photostable compared to ZnO NPs. The melt blended matrices were characterized by field emission scanning electron microscopy interfaced with energy dispersive X-ray spectroscopy (FE-SEM-EDX). The UV shielding property was analyzed from the transmittance spectra of UV–visible (UV–vis) spectroscopy. The results confirmed fine dispersion of thick Si-ZnO NPs in the entire resin matrix. Moreover, the Si-ZnO/PEAA showed about 97% UV shielding properties than the ZnO/PEAA.
Authors:
 [1] ; ;  [2] ;  [3] ;  [2]
  1. Division of Bionanotechnology, Gachon University, Seongnam 461-701 (Korea, Republic of)
  2. Department of Polymer Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)
  3. Department of Chemistry, Myongji University, Yongin 449-728 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22348586
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 51; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; DISPERSIONS; ETHYLENE; FIELD EMISSION; METHYLENE BLUE; NANOPARTICLES; NANOSTRUCTURES; PHOTOELECTRON SPECTROSCOPY; PHOTOLUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SILICA; SPECTRA; SYNTHESIS; X-RAY SPECTROSCOPY; ZINC OXIDES