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Thermal and mechanical properties of epoxy resin reinforced with modified iron oxide nanoparticles
Author(s) -
Baghdadi Yasmine N.,
Youssef Lucia,
Bouhadir Kamal,
Harb Mohammad,
Mustapha Samir,
Patra Digambara,
TehraniBagha Ali Reza
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50533
Subject(s) - thermogravimetric analysis , materials science , dynamic mechanical analysis , epoxy , differential scanning calorimetry , thermal stability , nanocomposite , fourier transform infrared spectroscopy , composite material , glass transition , scanning electron microscope , ultimate tensile strength , nanoparticle , polymer , chemical engineering , nanotechnology , physics , engineering , thermodynamics
Abstract Epoxy polymers, having good mechanical properties and thermal stability, are often used for engineering applications. Their properties can be further enhanced by the addition of iron oxide (Fe 3 O 4 ) nanoparticles (NPs) as fillers to the resin. In this study, pristine Fe 3 O 4 NPs were functionalized with polydopamine (PDA), (3‐glycidoxypropyl)trimethoxysilane (GPTMS), and (3‐aminopropyl)trimethoxysilane (APTES). X‐ray diffraction and scanning electron microscopy (SEM) were used to study any changes in the crystal structure and size of the NPs while Fourier‐Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA) were used to ensure the presence of functional groups on the surface. The mechanical properties of the Fe 3 O 4 ‐based nanocomposites generally improved except when reinforced with Fe 3 O 4 /PDA. The maximum improvement in tensile strength (∼34%) and fracture toughness (∼13%) were observed for pristine Fe 3 O 4 ‐based nanocomposites. Dynamic mechanical analysis (DMA) showed that the use of any of the treated NPs improved the material's initial storage modulus and had a substantial impact on its dissipation potential. Also, it was observed that the glass transition temperature measurements by DMA and differential scanning calorimetry were below that of pure epoxy. SEM of the cracked surfaces shows that the incorporation of any NPs leads to an enhancement in its thermal and mechanical properties.