Liquid Transfer for Viscoelastic Solutions

Viscoelastic liquid transfer from one surface to another is a process that finds applications in many technologies, primarily printing. Here, cylindrical shaped capillary bridges pinned between two parallel disks are considered. Specifically, the effects of polymer mass fraction, solution viscosity, disk diameter, initial aspect ratio, final stretching velocity and filling fraction (alike contact angle) experimentally investigated uniaxial extensional flow. Both Newtonian viscoelastic solutions prepared using polyethylene glycol (PEG) oxide (PEO), with wide variety fractions. The results show increase solvent viscosity reduces top surface. Moreover, height bridge also decreases transfer, for both solutions. Finally, shape varied by changing volume. Now, exhibit opposite behaviors transfer. These findings discussed terms interfacial instability gravitational drainage.