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The Spreading of Inkjet‐Printed Droplets with Varying Polymer Molar Mass on a Dry Solid Substrate
Author(s) -
Perelaer Jolke,
Smith Patrick J.,
van den Bosch Erwin,
van Grootel Stephen S. C.,
Ketelaars Peter H. J. M.,
Schubert Ulrich S.
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800569
Subject(s) - molar mass , polystyrene , polymer , evaporation , toluene , substrate (aquarium) , polymer chemistry , viscosity , chemical engineering , materials science , chemistry , analytical chemistry (journal) , composite material , chromatography , thermodynamics , organic chemistry , physics , oceanography , engineering , geology
An experimental study on the spreading of inkjet printed droplets of a polystyrene/toluene solution with varied molar masses on solid dry surfaces is presented. The polymer's number‐averaged molar mass was varied between 1.5 and 545 kDa, which also caused a variation in the viscosity from 0.6 to 1.7 mPa · s. The results were compared with theoretical models for droplet spreading and were found to fit with an error between 2 and 20% with the predictions. Furthermore, the in‐flight evaporation of the free‐falling droplet was investigated for polystyrene/toluene solutions that have a constant vapor pressure by printing from a systematically increased height.