The effects of dip-coating dispersion formulation, coating time and thermal treatment process on the membrane microstructure and performance were comprehensively investigated.
As fibre strength was seen to decrease after magnesium coating, the Weibull parameters (shape and scale) used to calculate IFSS were obtained using their real tensile strength data (i.e., from the coated fibre properties at each coating time).
We found that the DLC coatings reduce the rates drastically, and a 1-min coating time is enough to form a gas barrier.
Moreover, it is also found that the growth length and density of the TiO2 nanorods of the BTs can be readily controlled by adjusting the growth time and the concentration of growth solution, and that the density of the coated P25 particles can also be controlled through changing the coating time and the concentration of coating solution.
It was seen that rougher films (compared with pristine fibre in Figure 6(a)) were created on the fibre surface with increased coating time which correlated well with the observations made for the coated glass slides (Section 3.1.1).
The wall thickness of nanotubes is about 30 nm uniformly corresponding to a 10-min coating time.
The coating time was 20 to 30 min and deposit thickness was 8 10 μm according to the electrolysis time.
The influence of pH, coating time, shellac concentration and preparation mechanism (acid or calcium precipitation) were investigated.
NIRS is sensitive to changes in coating formulation, the quality of a coating excipient (hydroxypropyl methylcellulose), and coating time.
The process variables investigated were inlet airflow, pan speed, inlet air temperature, coating time, atomization pressure, and fan pressure.
The influence of the modifying conditions such as coating time and DA concentration on the membrane properties was investigated.
