Real Space and Wave‐Number Space Studies of the Phase Structure and Morphology of iPP/PEOc Blends Using Scanning Electron Microscopy

Abstract

The influence of blend composition on the phase structure and morphology of poly(propylene)/poly(ethylene‐co‐octene) blends was studied using SEM. A diameter dg was defined and calculated in real space to discuss the phase structure and morphology of iPP/PEOc blends. The figure‐estimation method was introduced to determine the distribution width of dg. It was shown that the distribution of dg obeys a log‐normal distribution and the distribution width σ of dg was calculated. In wave‐number (h) space, the correlation distance, ac, was defined by applying light scattering theory to power spectrum images obtained by 2D Fourier transformation. Moreover, a fractal dimension, Dc, was introduced to describe the uniformity of the spatial distribution.magnified image

Phase structure evolution during mixing and processing of poly(lactic acid)/polycaprolactone (PLA/PCL) blends

“…A part of the experimental results shows a steeper than linear increase of the average R with u [11][12][13][14][15][16][17][18][19]. Slower than linear growth of R with u has been found only rarely [20,21].…”

Real space and wave-number space studies of the phase structure and morphology of iPP/PEOc blends using phase contrast microscopy

“…In our preceding paper, 1 the phase structure and morphology of binary blends of isotactic polypropylene (iPP) with poly(ethylene-co-octene) (PEOc) were studied by scanning electron microscope (SEM) both in real space and wave-number space. In the real space, the average sizes of dispersed phase particles and their distribution widths were calculated.…”