Sonochemical Synthesis of Ca(OH)2 Nanoparticles and Its Application in Preparation of MWCNT-Paraloid Nanocomposite
| Autor: | H. Kazemi, K. Zandi, H. Momenian |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Journal of Nanostructures, Vol 5, Iss 1, Pp 25-32 (2015) |
| Druh dokumentu: | article |
| ISSN: | 2251-7871 2251-788X |
| DOI: | 10.7508/jns.2015.01.004 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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