Fabrication and characterization of CMC-based nanocomposites reinforced with sodium montmorillonite and TiO2 nanomaterials

Carbohydrate Polymers
Bahram Fathi Achachlouei, Younes Zahedi

Abstract

In this study, a novel carboxymethyl cellulose (CMC)-based ternary nanocomposite films containing sodium montmorillonite (Na-MMT) (1, 3 and 5% wt) and titanium dioxide (TiO2) (1, 3 and 5% wt) nanoparticles (NPs) were made via casting method. The results showed that addition of NPs decremented water vapor permeability of the films up to 39% and 50% by adding Na-MMT, and Na-MMT + TiO2, respectively, while moisture content, density and glass transition temperature incremented slightly. The nanoclays amplified resistance of the nanocomposites against tensile stress and Young's modulus (YM) of the films at the expense of elongation at break. A synergistic effect of NPs on moisture uptake reduction (≈ 40%) of films was observed. Nano-TiO2 was strongly effective in UV-light blocking (The films containing 5% TiO2 removed more than 99% of UV and more than 98% of visible lights). The interactions, crystallinity and morphology of the nanocomposites were investigated by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM). Development of hydrogen bonds between the hydroxyl groups of CMC and nanoparticles was indicated by FT-IR spectroscopy. Conforming to the XRD analysis,...Continue Reading

Citations

Jun 5, 2020·Small·Magdiel Inggrid SetyawatiKee Woei Ng
May 6, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yage XingHua Yang
Jan 28, 2021·Nanomaterials·Mateja PrimožičMaja Leitgeb
Oct 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Yumei LiRongzhan Liu
Dec 31, 2020·Nanomaterials·Jawad SarfrazMarit Kvalvåg Pettersen
Jun 1, 2021·Food Research International·Jéssica de Matos FonsecaAlcilene Rodrigues Monteiro
Jun 2, 2021·International Journal of Biological Macromolecules·Usman AminMuthu Thiruvengadam

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