Influence of silver nanoparticles on the mechanical, thermal and antimicrobial properties of cellulose-based hybrid nanocomposites

Abstract

Using cellulose as matrix and different contents of banana peel powder (BPP) as filler, the wet composites were prepared. These films were immersed in 3 mM aq. silver nitrate source solution to in-situ generate silver nanoparticles (AgNPs) in them. The resulting cellulose/BPP/AgNP hybrid nanocomposites films were carefully rinsed to remove any impurities and salts and are dried at ambient temperature. These films were characterized by FTIR spectroscopy, X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, tensile and antibacterial tests. The main aim of this work is to volarize BPP as reinforcing filler and also to study the influence of both BPP and AgNPs in the properties of the hybrid nanocomposites. The SEM images illustrated a uniform distribution and adhesion between the blended components. The blended films presented enhanced thermal stability and tensile properties compared to the matrix material. Further, the infusion of AgNPs proved the blends to have exhibited good antimicrobial activities against all the bacterium taken for the test. From the results, it is clear that the blends have the potential for possible utilization in active packaging applications.