In this work, the water-dissolved surface modifier method was
introduced to recycled high-density polyethylene (rHDPE) matrix to
fabricate green superhydrophobic surfaces. Surface cavities on rHDPE are
formed by sodium chloride particles which can be readily rinsed off and
reused. Water contact angle, self-cleaning properties, and surface
morphology were characterized. By creating porosity onto the rHDPE
matrix, the surface exhibits an excellent self-cleaning property with a water
contact angle larger than 150°. Surface morphology reveals the porosity and
roughness of the surface. In this fabricating process, no chemicals are used
while rHDPE is selected for the purpose. Based on the findings, it is proven
that the superhydrophobic surface can be fabricated with a simple yet green
approach