Abstract
Abstract Short fluoroalkyl chain of C3F7 instead of longer fluoroalkyl chain (C > 7) was robustly grafted on cotton fibers via an atom transfer radical polymerization (ATRP) strategy. This study focused on the influence of different finishing parameters (synthetic approach, grafting concentration) and post-treatment (washing, drying) conditions on wettability, liquid adhesion, air permeability, and mechanical (dry abrasion and wet laundering) properties. The results indicated that C3F7 chain was successfully grafting by a developed ATRP technique to construct superhydrophobic cotton fabrics. The optimized surfaces demonstrated super-anti-wetting property with a contact angle of about 163.7 ± 2.5° and an ultralow droplet adhesion of 62.3 ± 2.6 μN. The wettability remained highly hydrophobic even after 40 abrasion or 35 laundering cycles. This work also demonstrated the rational design and elaboration strategy of short fluorine-containing chains are vital for the construction of super-anti-wetting surfaces with controllable droplet adhesions. The results indicated that the anti-wetting, abrasion and laundering properties are much more influenced by the grafting strategy. We believe that environmental-friendly short fluoroalkyl chain (C
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