Chhetri, Suman and Adak, Nitai Chandra and Samanta, Pranab and Murmu, Naresh Chandra and Kuila, Tapas (2018) Rheological, Mechanical, and Thermal Properties of Silane Grafted Layered Double Hydroxide/Epoxy Composites. Industrial & Engineering Chemistry Research, 57 (26). pp. 8729-8739.

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Judicious surface design of a nanofiller is pertinent to exploit its reinforcing competency in polymer composites. Herein, sodium dodecyl sulfate intercalated layered double hydroxide (LDH) was functionalized using 3-aminopropyltriethoxysilane (APTES), which was then dispersed in the epoxy matrix. The grafting of APTES on the LDH surface was confirmed by Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis. The robustness of the interface reflected the significant improvement of ∼104 and 90% in flexural strength and modulus at 0.25 wt % loading, while the tensile strength and Young̀s modulus were found to increase by ∼44 and 50.8%, respectively. The tangible improvement in interfacial interaction due to the functionlization was further reflected in the enhanced storage modulus and glass transition temperature, Tg, by ∼36% and ∼6 °C, respectively, at 0.25 wt % loading. A rheological study confirmed the Newtonian behavior of the composites in the shear rate range of 0.1–100 s–1.

Item Type: Article
Subjects: Analysis of composite material structures
Depositing User: Dr. Arup Kr. Nandi
Date Deposited: 15 Jul 2020 13:51
Last Modified: 15 Jul 2020 13:51

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