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ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments

Historical calcareous stone surfaces may undergo unwanted changes due to the exposure to many physical and chemical deterioration factors. This paper evaluates the use of zinc oxide nanoparticles, dispersed in a laboratorial prepared acrylic copolymer [polyethylmethacrylate/methylacrylate (70:30) (P...

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Main Authors:	Ahmed, Sayed M., Al-Dosari, Mohammad A., Al-Mouallimi, Nadia, Kamal, Hussein M., Mohamed, Wael S., Elmarzugi, Nagib Ali
Format:	Conference or Workshop Item
Published:	2015
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/63474/ https://www.researchgate.net/publication/282975945_ZnO_Coated_Nanoparticles_Based_on_Acrylic_Copolymer_for_Protecting_Historic_Calcareous_Stone_Monuments
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id	my.utm.63474
record_format	eprints
spelling	my.utm.634742017-08-10T04:53:25Z http://eprints.utm.my/id/eprint/63474/ ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments Ahmed, Sayed M. Al-Dosari, Mohammad A. Al-Mouallimi, Nadia Kamal, Hussein M. Mohamed, Wael S. Elmarzugi, Nagib Ali TP Chemical technology Historical calcareous stone surfaces may undergo unwanted changes due to the exposure to many physical and chemical deterioration factors. This paper evaluates the use of zinc oxide nanoparticles, dispersed in a laboratorial prepared acrylic copolymer [polyethylmethacrylate/methylacrylate (70:30) (Poly EMA/MA)], as a nanocomposite coating material with hydrophobic, consolidating and protecting properties against artificial aging by relative humidity/temperature, UV radiation and dirt accumulation. The obtained nanocomposites have been characterized by transimition electron microscopy (TEM) to ensure the homogenous dispersion of ZnO nanoparticles in the polymer matrix and the average crystal size. Marble stone blocks have been prepared and coated by the nanocomposite material, the efficiency of the treatments has been evaluated after coating and artificial aging, through capillary water absorption, Ultraviolet-light exposure to evaluate photo-induced and the hydrophobic effects of the coated surface. Thermal aging, colorimetric measurements have been performed to evaluate the optical appearance. All the results confirmed that the nanocomposite coating enhanced the durability of stone surfaces toward UV aging, and improved their resistance to relative humidity and temperature compared to the samples coated with the acrylic polymer without ZnO nanoparticles. 2015 Conference or Workshop Item PeerReviewed Ahmed, Sayed M. and Al-Dosari, Mohammad A. and Al-Mouallimi, Nadia and Kamal, Hussein M. and Mohamed, Wael S. and Elmarzugi, Nagib Ali (2015) ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments. In: Seventh International Conference on Nano-Technology in Construction, 27-31 March, 2015, Egypt. https://www.researchgate.net/publication/282975945_ZnO_Coated_Nanoparticles_Based_on_Acrylic_Copolymer_for_Protecting_Historic_Calcareous_Stone_Monuments
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ahmed, Sayed M. Al-Dosari, Mohammad A. Al-Mouallimi, Nadia Kamal, Hussein M. Mohamed, Wael S. Elmarzugi, Nagib Ali ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
description	Historical calcareous stone surfaces may undergo unwanted changes due to the exposure to many physical and chemical deterioration factors. This paper evaluates the use of zinc oxide nanoparticles, dispersed in a laboratorial prepared acrylic copolymer [polyethylmethacrylate/methylacrylate (70:30) (Poly EMA/MA)], as a nanocomposite coating material with hydrophobic, consolidating and protecting properties against artificial aging by relative humidity/temperature, UV radiation and dirt accumulation. The obtained nanocomposites have been characterized by transimition electron microscopy (TEM) to ensure the homogenous dispersion of ZnO nanoparticles in the polymer matrix and the average crystal size. Marble stone blocks have been prepared and coated by the nanocomposite material, the efficiency of the treatments has been evaluated after coating and artificial aging, through capillary water absorption, Ultraviolet-light exposure to evaluate photo-induced and the hydrophobic effects of the coated surface. Thermal aging, colorimetric measurements have been performed to evaluate the optical appearance. All the results confirmed that the nanocomposite coating enhanced the durability of stone surfaces toward UV aging, and improved their resistance to relative humidity and temperature compared to the samples coated with the acrylic polymer without ZnO nanoparticles.
format	Conference or Workshop Item
author	Ahmed, Sayed M. Al-Dosari, Mohammad A. Al-Mouallimi, Nadia Kamal, Hussein M. Mohamed, Wael S. Elmarzugi, Nagib Ali
author_facet	Ahmed, Sayed M. Al-Dosari, Mohammad A. Al-Mouallimi, Nadia Kamal, Hussein M. Mohamed, Wael S. Elmarzugi, Nagib Ali
author_sort	Ahmed, Sayed M.
title	ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
title_short	ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
title_full	ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
title_fullStr	ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
title_full_unstemmed	ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
title_sort	zno coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments
publishDate	2015
url	http://eprints.utm.my/id/eprint/63474/ https://www.researchgate.net/publication/282975945_ZnO_Coated_Nanoparticles_Based_on_Acrylic_Copolymer_for_Protecting_Historic_Calcareous_Stone_Monuments
_version_	1643655726201044992
score	13.211869

ZnO coated nanoparticles based on acrylic copolymer for protecting historic calcareous stone monuments

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