Affiliations 

  • 1 Wood Science and Technology Department, Faculty of Materials Engineering &Interdisciplinary Sciences, Shahid Rajaee Teacher Training University (SRTTU), Tehran, 16788-15811, Iran. htaghiyari@sru.ac.ir
  • 2 Department of Mechanical Wood Technology, Faculty of Forest Industry, University of Forestry, 1797, Sofia, Bulgaria
  • 3 Department of Civil Engineering - Geotechnics, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University (SRTTU), Tehran, 16788-15811, Iran
  • 4 Department of Geography, Tourism, and Territorial Planning, Faculty of Geography, Tourism, and Sport, University of Oradea, 410087, Oradea, Romania. dilies@uoradea.ro
  • 5 Department of Wood & Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, 77871-31587, Iran
  • 6 Department of Wood Industry, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Cawangan Pahang, 26400, Bandar Tun Razak, Malaysia
  • 7 Department of Geography, Tourism, and Territorial Planning, Faculty of Geography, Tourism, and Sport, University of Oradea, 410087, Oradea, Romania
  • 8 Department of Textiles, Leather and Industrial Management, Faculty of Energy Engineering and Industrial Management, University of Oradea, 410058, Oradea, Romania
Sci Rep, 2024 Feb 20;14(1):4168.
PMID: 38378787 DOI: 10.1038/s41598-024-54451-9

Abstract

Sepiolite is a silicate mineral that improves the fire properties in solid wood when mixed with a water-based coating. The present study was carried out to investigate and evaluate the effects of sepiolite addition to acrylic-latex paint on the pull-off adhesion strength, as an important characteristic of paints and finishes used in the modern furniture industry and historical furniture as well for preservation and restoration of heritage objects. Sepiolite was added at the rate of 10%, and brushed onto plain-sawn beech (Fagus orientalis L.) wood specimens, unimpregnated and impregnated with a 400 ppm silver nano-suspension, which were further thermally modified at 185 °C for 4 h. The results showed that thermal modification had a decreasing effect on the pull-off adhesion strength, primarily as a result of the thermal degradation of cell-wall polymers (mostly hemicelluloses). Still, a decreased wettability as a result of condensation and plasticization of lignin was also partially influential. Based on the obtained results,thermal modification was found to have a significant influence on pull-off adhesion strength. Sepiolite addition had a decreasing effectin all treatments, though the effect was not statistically significant in all treatments. The maximum and minimum decreases due to sepiolite addition were observed in the unimpregnated control (21%) and the thermally-modified NS-impregnated (4%) specimens. Other aspects of the sepiolite addition, and further studies that cover different types of paints and coatings, should be evaluated before coming to a final firm conclusion in this regard.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.