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Synthesis and characterization of novel organoclay-epoxy based flame retardant nanocomposites.

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Title: Synthesis and characterization of novel organoclay-epoxy based flame retardant nanocomposites.
Authors: Altaf, Muhammad1,2 (AUTHOR), Ahmed, Muhammad Naeem1 (AUTHOR) drnaeem@ajku.edu.pk, Iqbal, Anila2 (AUTHOR) a.anilaiqbal@gmail.com, Khan, Arshad Ali3 (AUTHOR)
Source: Journal of Reinforced Plastics & Composites. Jan2026, Vol. 45 Issue 1/2, p32-44. 13p.
Subjects: Organoclay, Nanocomposite materials, Thermogravimetry, Microstructure, Bentonite, Ion exchange (Chemistry), Epoxy resins, Fireproofing agents
Abstract: In this study, cost-effective, widely spread, and nontoxic fillers were used to improve the flame retardancy of epoxy nanocomposites. A novel and environmentally benign cation exchange approach was used for the modification of bentonite nanoclay with positively charged L-serine, used to synthesize nanocomposites. Modification of clay was confirmed by using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectroscopy. X-ray diffraction (XRD) technique proved increase of d-spacing from 12.82 Å to 14.42 Å as a result of cation exchange. Field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to investigate microstructure of the nanocomposites. Reduction in weight loss, with 28.0 % to 34.0 % increase in char yield of epoxy nanocomposites was determined by the thermogravimetric analysis (TGA). Underwriters laboratories (UL-94) V-0 ratings of nanocomposites indicated improved flame retardancy. Nanofillers significantly reduced the loading of aluminum tri-hydroxide (ATH) and improved the flame retardancy through its synergistic effect. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:In this study, cost-effective, widely spread, and nontoxic fillers were used to improve the flame retardancy of epoxy nanocomposites. A novel and environmentally benign cation exchange approach was used for the modification of bentonite nanoclay with positively charged L-serine, used to synthesize nanocomposites. Modification of clay was confirmed by using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectroscopy. X-ray diffraction (XRD) technique proved increase of d-spacing from 12.82 Å to 14.42 Å as a result of cation exchange. Field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to investigate microstructure of the nanocomposites. Reduction in weight loss, with 28.0 % to 34.0 % increase in char yield of epoxy nanocomposites was determined by the thermogravimetric analysis (TGA). Underwriters laboratories (UL-94) V-0 ratings of nanocomposites indicated improved flame retardancy. Nanofillers significantly reduced the loading of aluminum tri-hydroxide (ATH) and improved the flame retardancy through its synergistic effect. [ABSTRACT FROM AUTHOR]
ISSN:07316844
DOI:10.1177/07316844241272956