Surface structure

Controllability

Engineering

Polymer chemistry

Materials science

Applied mathematics

Chemical engineering

Mechanical engineering

Contact angle

Operations research

Melting point

Nanotechnology

Mathematics

Surface modification

Composite material

Fiber

Penetration (warfare)

Crystallography

Chemistry

Wetting

Fold (higher-order function)

Surface Engineering

Ethylene-Propylene Side by Side (ES ) fibre remains an important challenge in hydrophilicity. In this study, we obtained folded nonwoven fabrics (FNF) by the through air–bonding process. The fiber with the fold structure was prepared by regulating the treatment temperature, treatment time, and cooling rate. The results showed that the melting point of the shell layer should be controlled at 135°C. The fold structure was most obvious at 135°C, 2.5 min, and rapid cooling. Compared with the common sample, liquid absorption capacity, thickness, and the diffusion area of the FNF increased by 64%, 0.3 mm, and 41%, respectively, and the rewet decreased by 35%. The contact angle of FNF was 140°, which was 30° larger than that of common nonwovens. Except for the first time, the penetration time for the two other times was better than that of ordinary materials.

Surface modification of ES fibres: the controllability of fold structure and its effect on hydrophilicity