Fabrication and characterization of zinc oxide nanoparticle-treated kenaf polymer composites for weather resistance based on a solar UV radiation

Abstract

Polyester/kenaf composites reinforced with zinc oxide nanoparticles (ZnO NPs) were fabricated. The nanoparticle treatment had a noticeable effect on the mechanical properties of the composites. Kenaf treatments with five different concentrations 1%, 2%, 3%, 4%, and 5% were performed. The mechanical analysis showed an increased flexural strength stability and break elongation in the functionalized ZnO NPs-treated kenaf polyester resin composites. The polymer nanocomposites with 2% ZnO NPs had stable mechanical properties with moderate elastic properties compared with the remaining ZnO NPs systems. The mechanical properties of the composites that contained different layers of kenaf mat demonstrated positive influence on the polymer nanocomposites. The material increased in stiffness with an increase in layers from 1 to 5. The results of weathering confirmed the stability of the polymer nanocomposites with increased stability. The 2% nanoparticle coating with a 5-layer kenaf layer revealed no remarkable changes in the mechanical degradation throughout the 6-month weathering period. The results of the mechanical properties tests suggested that a 2% ZnO NPs concentration with five kenaf layers had the highest moisture resistance, thus; the ZnO NPs acted as a water repellent agent.

Heat transfer and physical-mechanical properties analysis of particleboard produced with ZnO nanoparticles addition

“…Anoop et al (2009) investigated the effect of different nanoparticle sizes on the heat transfer, observing that the nanofluids have high heat transfer capacity. Mohammed et al (2018) used ZnO nanoparticles on wood composites to improve weather resistance and better physical and mechanical properties. In addition, Bak and Németh (2018) verified that zinc oxide provides effective protection against fungi, showing good protection for both investigated fungi, Coniophora puteana and Coriolus versicolor.…”

Antibacterial Activity of Metallic Nanoparticles against Multidrug-Resistant Pathogens Isolated from Environmental Samples: Nanoparticles/Antibiotic Combination Therapy and Cytotoxicity Study

“…This was not in agreement with Kareem et al, whose findings showed that the efficiency of ZnONPs against multidrug-resistant bacteria is higher compared with that of AgNPs. Mohammad et al reported that ZnONPs were effective against Klebsiella pneumonia , Listeria monocytogenes , and Salmonella enteritidis pathogens. The chemically synthesized silver nanoparticles have proven to inhibit the studied pathogenic organisms used for the study, though zinc oxide nanoparticles only inhibited Gram-positive organisms.…”

Interfacial bonding mechanisms of natural fibre-matrix composites: An overview

“…Various surface treatment procedures such as alkylation, acetylation, and maleated coupling have been used to promote the compatibility of the matrix and NFr. NPs or nanofillers offer enormous potential for usage as filler materials in polymer composites to improve their qualities (Mohammed et al 2018). Academics and researchers have improved the characteristics of NFr reinforced polymer composites by including nano clay, nano-silica SiO2, carbon nanotubes, and a variety of other NPs (Mohammed et al 2017a, b).…”

“…The interfacial characteristics can be improved by modifying the fibre, matrix, and NPs in hybrid composites (Pracella et al 2010). NPs is considered to increase the surface roughness of the fibre, hence increasing interfacial adhesion by mechanical interlocking (Mohammed et al 2018).…”