Likewise, minimizing the mesh surface roughness via melting the meshes into films also dramatically reduced the water contact angles to 100° or lower for the respective compositions (see Supporting Information Figure S5).
A rational design of experiments was employed to evaluate the correlation between scan parameters and the resulting surface roughness of Selective Laser Melted Ti-6Al-4V components.
The N coatings present the highest surface roughness due to the lowest melting degree.
Electrospinning is a versatile polymer processing method by which nonwoven nano- and microfiber meshes with high surface area and surface roughness are prepared from polymer melts, solutions, blends, immiscible mixtures, emulsions, and even from low-molecular-weight supramolecular assemblies.
Several factors such as alloy composition, melt superheat, mold material, roughness of inner mold surface, mold coating layer, etc., can affect the transient metal/mold heat transfer coefficient, hi.
A separate group of meshes was melted to eliminate surface roughness and therefore act as a nonsuperhydrophobic control with identical polymer composition.
Surface roughness, Ra, from 40 to 160 μm, melt pool depths from 0.4 to 1.7 mm, increases in the pin outer diameter from 0.5 to 1.1 mm, and pull out forces of up to 7.51 kN were achieved.
The neutron reflectivity profiles of PE-dPS bilayer samples were measured in situ at 150°C in the melt regime giving a melt interfacial roughness, σ12, of 1.18 ± 0.33 nm.
Roughness related to the particle velocity and particle melting, and was highest at low gas flow rates and, due to the quadratic effect of current, at the central current value.
Rheological study revealed that the surface roughness was originated from the irregular flow of LDPE melt during the extrusion process.
