Both grades are produced using a new, patented manufacturing process that is said to simultaneously provide spherical
particle shape, controlled particle size, and narrow particle-size distribution.
Heterogeneous
particle shape and agglomeration are observed in the ball milling method, which can be prevented by particle engineering techniques.
By adding 0.05 wt/wt% flow promoter Aerosil[R] 200 from Evonik, the spreading of the PET powder was good-despite the non-optimum
particle shape and wide size distribution.
To predict settling velocity of nonspherical particles, researchers propose a shape index to explain the effect of the
particle shape on settling velocity [11-20].
Hence, a small change in carrier physicochemical properties such as carrier
particle shape, size, density, surface area, surface energy, surface roughness, electrostatic charge, surface morphology, and topography have a substantial effect on drug aerodynamic performance [8].
Although many researchers have reviewed lots of measured experimental data and demonstrated that
particle shape plays an important role on convective heat transfer characteristic of nanofluids [10, 11], few models can be found in literatures proposed for nanofluid flow containing nonspherical nanoparticles.
After three lectures on statistical mechanics, four or five lectures each cover packing, coding, and ground states; entropy, probability and packing; ideas about self-assembly; the effects of
particle shape in orientationally ordered soft materials; statistical mechanics and nonlinear elasticity; and quantitative stochastic homogenization: the local control of homogenization error through corrector.
Figure 3 shows how surface area according to sand
particle shape affects the surface roughness.
Particle shape had a significant effect on the probability that the particle would be classified in the correct range.