ABSTRACT: This work reported the static and dynamic
hydrophobic properties of the honeycomb porous and peeled
films with pincushion structures by changing the concentrations
of the copolymer solution. Honeycomb porous films
were fabricated via breath figure technology employing a
pentablock copolymer containing poly(ethylene glycol)/PEG,
poly(methyl methacrylate)/PMMA, and poly(trifluoroethyl
methacrylate)/PTFEMA. The relationship between the
copolymer concentrations and the pore size (D) and rim
width (W) was examined. Moreover, we studied the hydrophobic
properties from different surfaces of flat, porous, and
pincushion structures, and the contact angles, W/D ratios, and
fraction of air on the porous and pincushion films were obtained. It was noteworthy that the W/D ratios and surface hydrophobic
properties had a notable correlation. Finally, the dynamic behaviors of water droplets impacting on these porous and pincushion
films were examined using a high speed camera. It examined the influence of the fraction of air on the measurement of the
dynamic morphologies, contact angle in equilibrium state, maximum spreading diameter and maximum height of the droplet, and
adhesive property of porous and pincushion films. The films obtained in this paper may have some potential applications as
hydrophobic, self-cleaning, and antibacterial surfaces.