Cotton fiber hot spot in situ growth of Stöber particles

M Zorko, J Vasiljević, B Tomšič, B Simončič… - Cellulose, 2015 - Springer
M Zorko, J Vasiljević, B Tomšič, B Simončič, M Gaberšček, I Jerman
Cellulose, 2015Springer
Textured cotton substrates are drawing interest as a new class of non-wetting and non-
fouling materials. We investigated the effect of temperature, solvent and substrate presence
on the in situ particle growth process for the production of self-cleaning, wash-resilient and
air-permeable superhydrophobic and oleophobic cotton textiles. By comparing the size of
particles grown in solution with those grown on cotton fibers, we show that the uniform
solution growth follows a faster reaction rate. In general, the cotton surface favors the …
Abstract
Textured cotton substrates are drawing interest as a new class of non-wetting and non-fouling materials. We investigated the effect of temperature, solvent and substrate presence on the in situ particle growth process for the production of self-cleaning, wash-resilient and air-permeable superhydrophobic and oleophobic cotton textiles. By comparing the size of particles grown in solution with those grown on cotton fibers, we show that the uniform solution growth follows a faster reaction rate. In general, the cotton surface favors the production of hierarchical structures that provide a liquid-repellent behavior, when combined with low surface free energy nanocoatings, such as an organically modified silane precursor or perfluoro ethers. In addition, the influence of an oil-based lubricant on the pinning effect was evaluated. On the basis of these findings, we present a low-cost method to manufacture nanostructured coatings to achieve optimal roughness and liquid repellence.
Springer
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