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Nano-Structured Polymer Coatings for Ultraviolet Protection

Published online by Cambridge University Press:  01 February 2011

Phaneshwar Katangur ,
Steven B Warner ,
Prabir K Patra ,
Yong K Kim ,
Shamal K Mhetre  and
Autumn Dhanote
Phaneshwar Katangur
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
Steven B Warner
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
Prabir K Patra
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
Yong K Kim
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
Shamal K Mhetre
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
Autumn Dhanote
Affiliation:
Department of Textile Science, University of Massachusetts Dartmouth, 285-Old Westport road, N. Dartmouth, MA 02747, USA.
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Abstract

Polymer materials such as Kevlar that are susceptible to UV degradation may be protected by appropriate coatings. We are using zinc oxide and titanium dioxide nanoparticles with an average particle size ranging from 25 to 70 nm. Five weight percent nanoparticles were dispersed in acrylic coatings, the dispersion is assisted by addition of a non-ionic surfactant, mechanical stirring and ultrasonication. The UV protective mechanism of nanoparticle-embedded coatings is theoretically explained using Mie theory. We estimated the minimum thickness of a 5 weight % nanoparticle-embedded coatings that is required to prevent the UV radiation from reaching the base of the substrate. Results obtained from nanoparticle-embedded acrylic-coated Kevlar fabric and neat acrylic-coated Kevlar fabric after exposure to UV radiation in QUV weatherometer show that the nanoparticle coating offers protection. UV-visible spectroscopy was used to obtain quantitative results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L8.44
Copyright
Copyright © Materials Research Society 2004

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References

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