Abstract

FRIDA, Erna; BUKIT, Nurdin; BUKIT, Ferry Rahmat Astianta  and  BUKIT, Bunga Fisikanta. Analysis Structure and Morphology of Bentonite-Opba Nanocomposites as Nanofillers. J. appl. res. technol [online]. 2022, vol.20, n.2, pp.117-125.  Epub Jan 27, 2023. ISSN 2448-6736.  https://doi.org/10.22201/icat.24486736e.2022.20.2.1710.

This study aims to analyze the structure and morphology of bentonite-OPBA nanocomposite used as a nanofiller. The methods used to synthesis bentonite nanoparticles are ball mill and co-precipitation and modification with surfactant cetyltrimethylammonium bromide (CTAB). Likewise, the OPBA synthesis process with the ball mill process and co-precipitation. Characterization using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), FTIR and X-ray fluorescence (XRF). The results of characterization using XRD showed a decrease in particle size in bentonite-OPBA nanocomposites. The peak angle Btb, Btbc occurs at an angle of 2θ are 19.97 o, 26.43 o, 35.29o. After being modified with CTAB surfactant, there was a shift in peak, which indicated CTAB had been inserted into the layer of Na-bentonite by ion exchange. The SEM results show uniformity of particle size in Bentonite-OPBA nanocomposite. Meanwhile, the FTIR results showed absorption peaks indicating bonding in the nanocomposite, confirmed by XRF results. The XRF results show the content of SiO2 and Al2O3 in the nanocomposite so that it can be applied as a nanofiller.

Keywords : Nanoparticles; CTAB; Geopolymer.

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