Understanding the evaporation and absorption of surfactant-laden droplets on porous media is challenging and important for many industrial applications, such as inkjet printing. Fast penetration of the droplets is desirable to minimize the time droplets remain on the paper, thereby preventing the coalescence of droplets, which is an undesirable outcome in inkjet printing. The addition of...
Latex inks are one of the most prevalent types of inks within the inkjet printing market. These inks are water-based, but commonly contain cosolvents to tune their liquid properties. After the printing process these cosolvents are in part (<5 wt% cosolvents in paper) left in the paper, where over a period of days to months (long-term) they will redistribute to form a uniform concentration...
After inkjet printing onto uncoated and unsized paper, the ink is first imbibed into the interfiber pores and subsequently absorbed by the cellulose fibers. The achievable print quality depends on the rate of this pore-fiber transport. The latter is accompanied by mechanical expansion of the fibers and the paper sheet. Therefore, we systematically monitored the swelling dynamics of several...
To reduce its environmental impact, the printing industry is transitioning towards using water-based inks. The liquid vehicle typically contains, besides water, cosolvents and surfactants to modify the physical properties of the ink [1]. Pigments and polymeric particles are added to create the print itself. To optimize the print quality, a thorough understanding of the transport processes of...
The cleaning and decontamination of various porous surfaces (e.g., concrete, tarmac, wood, etc.) is a challenging and multidisciplinary problem for both fundamental understanding and a wide range of industrial, medical, urban, everyday-life and disaster-response applications. The role of such processes is particularly crucial in cases where contaminants, such as chemical substances and...
