Abstract
ABSTRACTIn present work, Dextran‐grafted poly(acrylic acid) [D‐g‐PAA] hybrid nanocomposites are prepared in aqueous medium with reinforcement of various concentrations of nano‐CaCO3 (CC) through in situ polymerization of acrylic acid. The chemical interactions between filler and polymeric matrix are studied by Fourier transform infrared spectroscopy. The structural properties of the D‐g‐PAA/CC nanocomposite are investigated by X‐ray diffraction, field‐emission scanning electron microscopy, and high‐resolution transmission electron microscopy. The aloe vera plant structured morphology is noticed by interaction of dextran with PAA, where CC nanoparticles are embedded within the D‐g‐PAA matrix. The thermal stability of the D‐g‐PAA/CC hybrid nanocomposites is enhanced by the incorporation of nano‐CC. The tensile properties and antibacterial behavior of D‐g‐PAA/CC hybrid nanocomposites are also increased by incorporation of nano‐CC. The oxygen barrier behavior of hybrid nanocomposites is increased by 11‐folds with a reinforcement of 8 wt % of nano‐CC. Herein, the incorporation of nano‐CC enhances the oxygen barrier, thermal, and antimicrobial properties of the D‐g‐PAA matrix by which the synthesized material is suitable for packaging applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48298.
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