Issue 19, 2010
From the journal:

Soft Matter

Chemically guided topography in alkylsilane- and oligosiloxane-modified silicananoparticle coatings: from very hydrophobic surfaces to “pearl” bouncing droplets

N. García,a   E. Benito,a   P. Tiemblo,*a   M. M. B. Hasan,b   A. Synytska*c  and  M. Stammc  

* Corresponding authors

a Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva, 3, Madrid, Spain
E-mail: ptiemblo@ictp.csic.es

b Institute of Textile and Clothing Technology (ITB), TU Dresden, Dresden, Germany

c Leibniz Institute of Polymer Research, Hohe Str. 6, Dresden, Germany
E-mail: synytska@ipfdd.de

Abstract

The surface of silica nanoparticles has been modified using four sets of reagents: trimethoxysilanes (TMS), methoxysilanes (MS), dimethoxysilanes (DMS), and polydimethylsiloxanes (PDMS). Characterization of the organic loading and structure has been carried out. Glass slides have been coated with the organosilicas, and the wetting/topographic properties studied. Especially for the TMS organosilica series, the wetting behaviour of the coatings changes from very hydrophobic to superhydrophobic and finally to “pearl” bouncing droplets with contact angle of 180°, as the length of the silane alkyl side chain increases. The length of the side chain modifies not only the surface chemistry but also the aggregation state of the nanosilica, and thus controls the coating topography at the nano-, submicro and micrometre scales. This has been called “chemically guided topography”, and it produces a hierarchical structure dependent on the silica surface coverage, leading to different wetting responses.

Graphical abstract: Chemically guided topography in alkylsilane- and oligosiloxane-modified silica nanoparticle coatings: from very hydrophobic surfaces to “pearl” bouncing droplets

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C0SM00119H
Article type
Paper
Submitted
18 Mar 2010
Accepted
14 Jun 2010
First published
06 Aug 2010

Soft Matter, 2010,6, 4768-4776

Permissions

Request permissions

Chemically guided topography in alkylsilane- and oligosiloxane-modified silica nanoparticle coatings: from very hydrophobic surfaces to “pearl” bouncing droplets

N. García, E. Benito, P. Tiemblo, M. M. B. Hasan, A. Synytska and M. Stamm, Soft Matter, 2010, 6, 4768 DOI: 10.1039/C0SM00119H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements