A Study on Surface Physicochemical Properties of Woods Treated in Emulsion of Waterborne Varnish with Sesame and Grape Seed Oil

Aims: An eco-friendly coating emulsion prepared with mixture of oils sesame and grape seed alkyd-based waterborne varnish. The applied four different wood substrates (walnut, beech, cedar fir) in order to be investigated for some selected surface properties.
 Study Design: Several test methods were used evaluate physicochemical properties the coatings. results obtained may suggested selection best varnish-emulsion formulation improvement could provide useful evaluation employed.
 Methodology: species Beech (Fagus sylvatica), Walnut (Juglans regia), Cedar (Cedrus libani) Fir (Abies nordmandiana) investigation. Commercially available alkyd based varnish was supplied ready use form.
 Both oil (Sesamum indicum L.) (Vitis vinifera from a company that produces them by cold press technique commercially. as supplied, without additional processing. These added at 10% 20% proportions (volume/volume). 5 μl distilled water (surface tension 72.6 mN /m) on sessile droplet method measure contact angles. hardness scratch resistance cured layers measured using pencil procedure according ASTM-D-3363 standard. Cross cut also conducted EN ISO 2409 standard.
 Experimental Findings: It found coated walnut samples show 9.8 13.5° higher angle values all directions while other three only marginally (0.1 4.3°). highest value 35.9° 35.8° Wg20 Wg10 which treated 20- emulsion. typically contain various fatty acids fractions are constituents carboxylic acid long, aliphatic tail. groups created strong bond combination resin surface. However, energy distribution changes regardless treatment levels conditions. Therefore, there is not any clear advantage observed applications. For oil/varnish conditions, surfaces 3H, 2H, 2H walnut, fir cedar, respectively. At coatings, H level range. cross hatch experiments, similar trend 10-and species. Moreover, it ranked 2 fir, 3 beech 4 noticeable correlation between surfaces.