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Cotton fiber hot spot in situ growth of Stöber particles

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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.

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Acknowledgments

This work was supported by the Slovenian Research Agency (Program P2-0393 and P2-0213). We acknowledge E. Šest for performing Raman and AFM measurements, H. Spreizer for ATR FTIR measurements and M. Koželj for NMR measurements.

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Correspondence to I. Jerman.

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Zorko, M., Vasiljević, J., Tomšič, B. et al. Cotton fiber hot spot in situ growth of Stöber particles. Cellulose 22, 3597–3607 (2015). https://doi.org/10.1007/s10570-015-0762-4

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  • DOI: https://doi.org/10.1007/s10570-015-0762-4

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