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首页> 外文期刊>Applied Surface Science >Superhydrophobic cotton fabric fabricated by electrostatic assembly of silica nanoparticles and its remarkable buoyancy
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Superhydrophobic cotton fabric fabricated by electrostatic assembly of silica nanoparticles and its remarkable buoyancy

机译：二氧化硅纳米粒子静电组装制备超疏水棉织物及其优异的浮力

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摘要

Highly hydrophilic cotton fabrics were rendered superhydrophobic via electrostatic layer-by-layer assembly of polyelectrolyte/silica nanoparticle multilayers on cotton fibers, followed with a fluoroalkyl-silane treatment. The surface morphology of the silica nanoparticle-coated fibers, which results in the variety of the hydrophobicity, can be tailored by controlling the multilayer number. Although with the static contact angle larger than 150°, in the case of 1 or 3 multilayers, the fabrics showed sticky property with a high contact angle hysteresis (>45°). For the cotton fabrics assembled with 5 multilayers or more, slippery superhydrophobicity with a contact angle hysteresis lower than 10° was achieved. The buoyancy of the superhydrophobic fabric was examined by using a miniature boat made with the fabric. The superhydrophobic fabric boat exhibited a remarkable loading capacity; for a boat with a volume of 8.0 cm~3, the maximum loading was 11.6 or 12.2 gwhen the boat weight is included. Moreover, the superhydrophobic cotton fabric showed a reasonable durability to withstand at least 30 machine washing cycles.
机译：高亲水性棉织物通过在棉纤维上进行静电逐层组装聚电解质/二氧化硅纳米颗粒多层，从而使其具有超疏水性，然后进行氟烷基硅烷处理。可以通过控制多层数来定制导致疏水性变化的二氧化硅纳米颗粒涂覆的纤维的表面形态。尽管静态接触角大于150°，但在1或3个多层的情况下，织物显示出粘性，并具有高接触角滞后（> 45°）。对于组装有5个或更多的多层的棉织物，获得了具有小于10°的接触角滞后的光滑超疏水性。超疏水性织物的浮力通过使用由该织物制成的微型船来检查。超疏水性织物船具有出色的承载能力；对于体积为8.0 cm〜3的船，包括船重在内，最大载荷为11.6或12.2 g。此外，超疏水棉织物显示出合理的耐久性，可以承受至少30次机洗循环。

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