Influence of the Type of Epoxy Resin and Concentration of Glycidylisobutyl-POSS in the Properties of Nanocomposites

Epoxy resin is one of the most used resins for obtaining composites and coatings. Its properties have been modified using many materials, mainly based on nanotechnology, such as clays and polyhedral oligomeric silsesquioxanes (POSS). POSS may increase thermal and mechanical resistance and hydrophobi...

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Bibliographic Details
Published inPolymers & polymer composites Vol. 25; no. 8; pp. 593 - 602
Main Authors Longhi, Marielen, Zini, Lucas Pandolphi, Kunst, Sandra Raquel, Zattera, Ademir José
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.10.2017
Sage Publications Ltd. (UK)
Sage Publications Ltd
Subjects
Butyl compounds
Clay
Composite materials
Crosslinking
Dynamic mechanical analysis
Epoxy resins
Fourier analysis
Fourier transforms
Galvanized steel
Hydrophobicity
Infrared analysis
Infrared spectroscopy
Innovations
Mechanical properties
Nanocomposites
Nanotechnology
Polyhedral oligomeric silsesquioxane
Polymer matrix composites
Polymers
Properties
Science
Spectroscopic analysis
Thermal resistance
Thermogravimetric analysis
Weight reduction
X-ray diffraction
Nanocomposites
Epoxy
POSS
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Summary:Epoxy resin is one of the most used resins for obtaining composites and coatings. Its properties have been modified using many materials, mainly based on nanotechnology, such as clays and polyhedral oligomeric silsesquioxanes (POSS). POSS may increase thermal and mechanical resistance and hydrophobicity of the epoxy resin. This study aims at characterizing epoxy nanocomposites, using two distinct resins (DGEBA and DGEBF) and an addition of glycidylisobutyl-POSS in contents of 2.5% and 5% (w/w), through X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Samples showed an amorphous halo due to the epoxy resin and a characteristic peak of POSS. TGA results showed a greater residual mass in DGEBF systems due to its wider formation of crosslinks. FTIR spectra demonstrated a higher amplitude of the hydroxyl band in DGEBF 5% system, which may affect its hydrophilic behavior because of the molecular mobility and resin weight reduction. DMA results showed that DGEBA systems are more flexible than DGEBF.
ISSN:0967-3911
1478-2391
DOI:10.1177/096739111702500804