Sonochemical Synthesis of Ca(OH)2 Nanoparticles and Its Application in Preparation of MWCNT-Paraloid Nanocomposite

In this work at the first step calcium hydroxide nano-particles were synthesized via sono-chemical method at room temperature. At the second step aminated multi-walled carbon nano-tubes was prepared via chemical modification of surfaces of CNT. Finally modified-MWCNT and Ca(OH)2 were added to paralo...

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Bibliographic Details
Published in:Journal of nanostructures 2015-01, Vol.5 (1), p.25-32
Main Authors: H. Kazemi, K. Zandi, H. Momenian
Format: Article
Language:English
Subjects:
Ca(OH)2
cultural heritage
MWCNT
Nanocomposite
Paraloid
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Summary:In this work at the first step calcium hydroxide nano-particles were synthesized via sono-chemical method at room temperature. At the second step aminated multi-walled carbon nano-tubes was prepared via chemical modification of surfaces of CNT. Finally modified-MWCNT and Ca(OH)2 were added to paraloid matrix by aid of ultrasonic irradiation. Paraloid-modified-MWCNT-Ca(OH)2 nanocomposite was used as a protection agent applicable in cultural heritage preservation. This nanocomposite can be used against acid rain that is destructive agent in historic monuments. One of the main advantages of paraloid as a consolidant is that it is stronger and harder than polyvinyl acetate without being extremely brittle. Nanostructures were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Thermal stability behavior of paraloid filled with calcium hydroxide was investigated by thermogravimetric analysis (TGA). Our results show that the MWCNT-Ca(OH)2 nanostructure can enhance thermal stability property of the paraloid matrix. Nano-additives like a barrier slow down volatilization of paraloid chains against heat.
ISSN:2251-7871
2251-788X
DOI:10.7508/jns.2015.01.004