Inkjet printing of viscoelastic polymer inks |
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Authors: | Zhonghui Du Xinhong Yu Yanchun Han |
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Affiliation: | a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;b University of the Chinese Academy of Sciences, Beijing 100049, China |
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Abstract: | Inkjet printing is a new fabricating method that can realize the precise film deposition. For polymer inks, the coil-stretch transition of polymer chains always impacts the ink droplet formation and a beads-on-a string structure filament is formed, thus generating unwanted satellite droplets. This review provides a short introduction of the dynamic process of the droplet formation. Then fluid rheological requirements for a printable polymer ink are summarized. Finally the strain hardening phenomenon of polymer chains in the filament formation and its impact on polymer ink-jetting are discussed. The research of viscoelastic polymer inks shows that rheological parameters and viscoelasticity are two key factors that determine the printability of polymer inks. |
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Keywords: | Inkjet printing Droplet formation Rheological properties Polymer inks Coil–stretch transition |
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