Preprint Article Version 1 This version is not peer-reviewed

Formation of Hierarchical Porous Films with Breath-Figures Self-Assembly Performed on Oil-Lubricated Substrates

Version 1 : Received: 12 August 2019 / Approved: 13 August 2019 / Online: 13 August 2019 (09:57:51 CEST)

How to cite: Bormashenko, E.; Bormashenko, Y.; Frenkel, M. Formation of Hierarchical Porous Films with Breath-Figures Self-Assembly Performed on Oil-Lubricated Substrates. Preprints 2019, 2019080153 (doi: 10.20944/preprints201908.0153.v1). Bormashenko, E.; Bormashenko, Y.; Frenkel, M. Formation of Hierarchical Porous Films with Breath-Figures Self-Assembly Performed on Oil-Lubricated Substrates. Preprints 2019, 2019080153 (doi: 10.20944/preprints201908.0153.v1).

Abstract

Hierarchical honeycomb patterns were manufactured with the breath-figures self-assembly by drop-casting on the silicone-oil lubricated glass substrates. Silicone oil promoted spreading of the polymer solutions. The process was carried out with the industrial grade polystyrene and polystyrene with the molecular weight Mw=35.000. Both of polymers gave rise to the patterns, built from micro- and nano-scaled pores. Ordering of the pores was quantified with the Voronoi tessellations and calculating the Voronoi entropy. Measurement of the apparent contact angles evidenced the Cassie - Baxter wetting regime of the porous films.

Subject Areas

honeycomb polymer films; breath figures self-assembly; oil-lubricated substrates; Voronoi entropy; Cassie wetting regime

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