Facile method to prepare superhydrophobic and water repellent cellulosic paper

Ioannis Karapanagiotis, Diana Grosu, Dimitra Aslanidou, Katerina E Aifantis

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Silica nanoparticles (7 nm) were dispersed in solutions of a silane/siloxane mixture. The dispersions were applied, by brush, on four types of paper: (i) modern, unprinted (blank) paper, (ii) modern paper where a text was printed using a common laser jet printer, (iii) a handmade paper sheet detached from an old book, and (iv) Japanese tissue paper. It is shown that superhydrophobicity and water repellency were achieved on the surface of the deposited films, when high particle concentrations were used (≥1% w/v), corresponding to high static (θS ≈ 162°) and low tilt (θt < 3°) contact angles. To interpret these results, scanning electron microscopy (SEM) was employed to observe the surface morphologies of the siloxane-nanoparticle films. Static contact angles, measured on surfaces that were prepared from dilute dispersions (particle concentration <1% w/v), increased with particle concentration and attained a maximum value (162°) which corresponds to superhydrophobicity. Increasing further the particle concentration did not have any effect on θS. Colourimetric measurements showed that the superhydrophobic films had negligible effects on the aesthetic appearance of the treated papers. Furthermore, it is shown that the superhydrophobic character of the siloxane-nanoparticle films was stable over a wide range of pH.

Original languageEnglish (US)
Article number219013
JournalJournal of Nanomaterials
Volume2015
DOIs
StatePublished - 2015

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Siloxanes
Water
Nanoparticles
Dispersions
Contact angle
Silanes
Brushes
Silicon Dioxide
Surface morphology
Silica
Tissue
Scanning electron microscopy
Lasers

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Facile method to prepare superhydrophobic and water repellent cellulosic paper. / Karapanagiotis, Ioannis; Grosu, Diana; Aslanidou, Dimitra; Aifantis, Katerina E.

In: Journal of Nanomaterials, Vol. 2015, 219013, 2015.

Research output: Contribution to journalArticle

Karapanagiotis, Ioannis ; Grosu, Diana ; Aslanidou, Dimitra ; Aifantis, Katerina E. / Facile method to prepare superhydrophobic and water repellent cellulosic paper. In: Journal of Nanomaterials. 2015 ; Vol. 2015.
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