Interface-tuned epoxy/clay nanocomposites

Zaman, Izzuddin and Le, Quyen-Huye and Kuan, Hsu-Chiang and Kawashima, Nobuyuki and Luong, Lee and Gerson, Andrea and Ma, Jun (2011) Interface-tuned epoxy/clay nanocomposites. Polymer, 52. pp. 497-504. ISSN 0032-3861

Text AJ 2017 (199) Interface-tuned epoxyclay nanocomposites.pdf Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Though interface has been known for a critical role in determining the properties of conventional composites, its role in polymer nanocomposites is still fragmented and in its infancy. This study synthesized a series of epoxy/clay nanocomposites with different interface strength by using three types of modifiers: ethanolamine (denoted ETH), Jeffamine� M2070 (M27) and Jeffamine� XTJ502 (XTJ). XTJ created a strong interface between clay layers and matrix because it bridged the layers with matrix by a chemical reaction as proved by Fourier transform infrared spectroscopy; M27 produced an interme-diate interface strength due to the molecular entanglement between grafted M27 chains and matrix molecules; the interface made by ETH was weak because neither chemical bridging nor molecular entanglement was involved. The studies of mechanical and thermal properties and morphology at a wide range of magnification show that the strong interface promoted the highest level of exfoliation and dispersion of clay layers, and achieved the most increment in Young’s modulus, fracture toughness and glass transition temperature (Tg) of matrix. With w1.3 wt% clay, the critical strain energy release rate G1c of neat epoxy improved from 179.0 to 384.7 J/m, 115% improvement and Tg enhanced from 93.7 to 99.7

Item Type:	Article
Uncontrolled Keywords:	Interface; Nanocomposites; Clay
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:	Faculty of Mechanical and Manufacturing Engineering > Department of Mechanical Engineering
Depositing User:	Mrs. Siti Noraida Miskan
Date Deposited:	07 Dec 2021 07:56
Last Modified:	07 Dec 2021 07:56
URI:	http://eprints.uthm.edu.my/id/eprint/4580

Actions (login required)

View Item