نوع مقاله : مقاله پژوهشی
نویسنده
پژوهشکده فیزیک رنگ، گروه پژوهشی علوم و فناوری چاپ
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
This study investigates the effect of molecular structure and concentration of three non-ionic ethoxylated surfactants—Sorbitan monooleate (Tween80), oleic acid (Keol6), and nonylphenol (Kenon10) —on the milling process and final properties of dispersions for water-based inkjet inks. Particle size, surface tension, colorimetry, spectroscopy, and dynamic stability were evaluated. Results indicated that Kenon10 at an amount of 0.05 g, yields dispersions with the smallest particle size (~100 nm), narrowest distribution, highest color strength, and superior stability, attributed to its aromatic structure and optimal ethoxylate chain. Higher Kenon10 concentrations induce excessive surface tension reduction and competitive adsorption with the polymeric dispersant, leading to particle growth, reduced color strength, and instability. Conversely, Keol6 and Tween80 perform effectively at a higher concentration (0.1 g). The findings highlight the critical influence of surfactant molecular architecture on dispersion quality, governing milling efficiency, color performance, and colloidal stability.
کلیدواژهها [English]
)