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Transparent nanocomposite coatings based on epoxy and layered double hydroxide: Nonisothermal cure kinetics and viscoelastic behavior assessments
Abstract
Layered double hydroxide (LDH) has a particular place in clay family because of its flame retardant action. The nanoplatelet-like structure of LDH makes possible development of polymer composites with cationic or anionic nature structures in which macromolecules are positioned in between nanoplatelet galleries. In this work, neat epoxy and its transparent nanocomposite coatings with sodium dodecylbenzene sulfonate (SDBS)-modified LDHs; Mg-Al and Zn-Al LDHs, were prepared and their cure kinetics and viscoelastic behavior were tracked through nonisothermal calorimetric and dynamic mechanical analyses. The higher progression of crosslinking in the epoxy network was observed for epoxy/Zn-Al LDH nanocomposites, while activation energy of cure reaction took a higher value for Mg-Al LDH-incorporated systems. Moreover, epoxy/Mg-Al LDH system revealed higher value of storage modulus and glass transition temperature thanks to larger galleries of Mg-Al nanoplatelets. Network formation in the presence of SDBS-modified Zn-Al LDH nanoplatelets was facilitated due to the action of Zn metal as an adduct with a lone-pair of oxygen atom of epoxy leading to an enhanced epoxy ring-opening. Viscoelastic behavior of transparent coatings containing Zn-Al LDH and Mg-Al LDH was studied through temperature-sweep test at various frequencies to compare the results of calorimetric and thermo-mechanical analyses.
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Authors (11)
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Hadi Rastin
- University of Tehran, Tehran, Iran School of Chemical Engineering, College of Engineering
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Mohammad Saeb
- Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives
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Milad Nonahal
- University of Tehran, Tehran, Iran School of Chemical Engineering, College of Engineering
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Meisam Shabanian
- Standard Research Institute (SRI), Karaj, Iran Faculty of Chemistry and Petrochemical Engineering
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Henri Vahabi
- Université de Lorraine, Metz, France Laboratoire MOPS E.A.
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Xavier Gabrion
- University Bourgogne-Franche-Comté, Besançon, France FEMTO-ST Institute, Department of Applied Mechanics
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Farzad Seidi
- Vidyasirimedhi Institute of Science and Technology, Rayong, Thailand Department of Materials Science and Engineering, School of Molecular Science and Engineering
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Payam Zarrintaj
- University of Tehran, Tehran, Iran School of Chemical Engineering, College of Engineering
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Morteza Sari
- Institute for Color Science and Technology, Tehran, Iran Department of Nanomaterials and Nanocoatings
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Pascal Laheurte
- Universite de Lorraine, Metz, France Laboratoire LEM3
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
PROGRESS IN ORGANIC COATINGS
no. 113,
pages 126 - 135,
ISSN: 0300-9440 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Rastin H., Saeb M., Nonahal M., Shabanian M., Vahabi H., Formela K., Gabrion X., Seidi F., Zarrintaj P., Sari M., Laheurte P.: Transparent nanocomposite coatings based on epoxy and layered double hydroxide: Nonisothermal cure kinetics and viscoelastic behavior assessments// PROGRESS IN ORGANIC COATINGS. -Vol. 113, (2017), s.126-135
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.porgcoat.2017.09.003
- Verified by:
- Gdańsk University of Technology
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