Drying process of micro-scale polymer solution droplets deposited on lyophobic surfaces

J. Fukai, H. Ishizuka, Y. Sakai, M. Kaneda, M. Morita, A. Takahara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A micro-scale polymer solution droplet is deposited on a lyophobic surface using an inkjet printing method, and then dried to form a thin polymer film. The shapes of the films formed from xylene-polystyrene (PS) droplets are changed from ring-like to dot-like as the initial PS concentration decreases. Detailed investigations of the drying processes reveal that the pinning time of the contact line dominates the shape and dimension of the polymer film. For ethyl acetate/acetophenone-PS solutions, ethyl acetate rapidly evaporates at the initial stage, but it plays an important role in delaying the pinning time. As a result, this binary solvent forms a dot-like polymer film.

Original languageEnglish
Pages (from-to)137-146
Number of pages10
JournalExperimental Heat Transfer
Issue number2
Publication statusPublished - Apr 2007

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Instrumentation
  • Electrical and Electronic Engineering


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