Impact of High Concentrations of Cellulose Fibers on the Morphology, Durability and Protective Properties of Wood Paint

Abstract

This work aims to reveal the effect of a high amount of cellulose fibers on the durability and protective behavior of a bio-based wood paint. The influence of the filler on the morphology of the coatings was investigated by scanning electron microscopy observations, while the durability of the paint was evaluated by exposing the samples to UV-B radiation and continuous thermal shocks. Infrared spectroscopy analysis, colorimetric inspections, adhesion tests and scanning electron microscope observations were employed to assess the role of the high concentrations of fillers in affecting the resilience of the acrylic matrix. Moreover, the impact of the filler on the barrier performance of the coatings was estimated using a liquid resistance test and a water uptake test. Finally, the mechanical properties of hardness and abrasion resistance of the layers were evaluated by means of the Buchholz Hardness Indentation test and the Scrub test. Ultimately, this study demonstrates the pros and cons of using large amounts of cellulose fibers as filler in wood paint: the work warns against the excessive use of these fibers, which need a threshold limit so as not to significantly change the coating’s structure and thereby weaken its protective properties.

Comparative Analysis of the Advantages and Disadvantages of Utilizing Spirulina-Derived Pigment as a Bio-Based Colorant for Wood Impregnator

“…Following exposure to UV-B radiation, the intensity of the peak at 1728 cm −1 increases, while the signal of the peak at 1233 cm −1 decreases. These observations indicate that the wood panel undergoes degradation and experiences changes in the molecular arrangement of cellulose [51].…”

“…In contrast, when exposed to red ink, all four series of samples display similar behavior, resulting in a discoloration level of 5. This outcome was anticipated, considering the characteristic properties of red ink, known for its intense coloring efficiency and ability to penetrate easily within the paint's polymer structure [51].…”

“…The liquid resistance test is valuable for understanding the barrier qualities of wood coatings and how pigments [36,48] and additives [51,84] in the polymeric matrix can potentially affect them. To evaluate the test outcomes, the amount of color alteration resulting from the interaction between the coating and the test solutions is assessed, with reference to the sources provided in Table 3 [85].…”

“…Academia is now exploring the utilization of untreated additives in films [45,46]. In line with this objective, recent studies have examined the effects of incorporating various substances into wood coatings, including linseed oil [47], timber waste-derived colorants [48], microbialassisted coloring [49], mycelium-based dyes [50], and biomass fibrous material [51].…”

Assessing the Impact of Sepiolite-Based Bio-Pigment Infused with Indigo Extract on Appearance and Durability of Water-Based White Primer

“…For instance, chicken eggshells (ES) stand out as one of the extensively employed biobased resources for filling organic coatings [11][12][13] due to their abundant availability as a bio-waste form and their high calcium carbonate content (95%) [14]. Likewise, lignin and cellulose serve as renewable resources used as strengthening nanofillers in composite materials [15,16]. Additionally, the diverse range of discarded seashells from mollusks offers an endless supply of CaCO 3 , their primary component, which can serve as an alternative to conventional calcium carbonate in eco-friendly coatings [17][18][19].…”