PAPERmaking! Vol10 Nr2 2024

Inorganic Chemistry Communications 159 (2024) 111865

Contents lists available at ScienceDirect Inorganic Chemistry Communications

journal homepage: www.elsevier.com/locate/inoche

Short communication Production of environmentally friendly and antibacterial MDF (Medium-density fiberboard) surfaces with green synthesized nano silvers

Arife Kübra Yontar a , c , * , Sinem Çevik b , c , S¸eyma Akbay d a Department Mechanical and Metal Technologies, Ondokuz Mayis University, 55300, Samsun, Turkey b Department of Metallurgical and Materials Engineering, Ondokuz Mayis University, 55270, Samsun, Turkey c Department of Nanoscience and Nanotechnology, Ondokuz Mayis University, Atakum 55139, Samsun, Turkey d CAMSAN ORDU A ˘ GAÇ SANAY ˙ I ˙ I VE T ˙ IC. Inc., 52000, Ordu, Turkey

ARTICLE INFO Keywords: Green synthesis Nano silver

A B S T R A C T The study involves modifying green nano silver particles (AgNP) synthesized from the extracts of Cannabis Sativa seeds onto Medium-Density Fiberboard (MDF) surfaces. Microstructural examinations and chemical analyses of the produced surfaces were performed with Scanning Electron Microscope (SEM) and Energy Dispersive Spec troscopy (EDS). A peak at 415 nm was found in the UV – Vis spectrophotometer analysis range of the aqueous media containing green synthesized silver nanoparticles. The average size of AgNPs was found to be 45 nm by particle size distribution analysis. Performance tests of the modified surfaces revealed that the abrasion and scratch resistance of the coating containing 1 % AgNP increased twice and that all modified surfaces were resistant to staining. With nano silver modification, energy efficiency was achieved by shortening the gelation (drying) time of the surfaces coming out of the bath by one and a half minutes during coating production. Nano silver-modified MDF surfaces have shown antibacterial properties that are at least 1000 times more effective. MDF surface coatings modified with new-generation plant-based nanoparticles can prevent and reduce bacterial diseases that can be contaminated by the environment. The production of MDF surfaces that provide low energy consumption and antibacterial properties with green production will be possible.

Antibacterial MDF coating Mechanical strength

1. Introduction Infections and diseases, especially those of hospital origin, pose a worldwide health risk and cause serious deaths yearly [1]. A report in the Lancet noted that approximately 1.27 million deaths in 2019 were caused by AMR bacteria, which include six leading pathogens such as Escherichia coli, Staphylococcus aureus, Streptococcus pneumoniae, Acinetobacter baumannii, Klebsiella pneumonia, and Pseudomonas aeruginosa [2]. Current global pandemics have raised public awareness of developing new antimicrobial surfaces and coatings that can stop microbial contamination and prevent the spread of infection-causing bacteria [3]. Medium-density fiberboard (MDF) is widely used as a wood substrate in furniture and wood products due to its unique grain and texture, easy processing, lightweight and high strength. MDF products are frequently used in flooring, furniture and building mate rials, tables, counters, cutlery etc. and have a place in our daily lives in many areas, including hospitals and health institutions. MDF is very sensitive to rot and mold, and since it has a structure that can absorb

moisture in the environment, it provides suitable conditions for bacterial growth [4,5]. MDFs are generally used as coated with polymers such as Polyvinyl chloride and melamine and special papers for aesthetic appearance and protection. In this way, moisture retention and disin tegration of the fibers are prevented, while their resistance to fire and chemicals is increased [6]. Unfortunately, until today, MDF surfaces did not provide antibacterial effects and were the source of many mold- related diseases. Generally, people become ill with infectious diseases by coming into direct or indirect contact with pathogenic microorgan isms [7]. For this reason, minimizing the bacterial growth on the sur faces of MDF and similar products used in hospitals and food areas is of great importance for public health. In recent years, it has come to the fore to add antibacterial properties to the surfaces of these wood-based products. Various studies have been carried out on antibacterial MDF surfaces, but they are not sufficient [8 – 11]. The diversification of these studies and their preparation with natural ingredients that do not show toxic effects are critical for both the environment and human health. Antibacterial properties for MDF and all other surfaces can be achieved

* Corresponding author. E-mail address: kubra.demirbas@omu.edu.tr (A. Kübra Yontar).

https://doi.org/10.1016/j.inoche.2023.111865 Received 26 October 2023; Received in revised form 23 November 2023; Accepted 9 December 2023

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