1. Introduction
Understanding the morphology of polymer blends is
important in order to determine relationships between the
structure and properties of materials. Microscopic methods like
light microscopy (LM), scanning electron microscopy (SEM),
low voltage scanning electron microscopy (LVSEM), transmission
electron microscopy (TEM) or atomic force
microscopy (AFM) can detect details, ranging from the
millimetre to the subnanometer scale, and are therefore popular
tools for visualising blend morphology: Table 1 [1]. In spite of
several spectacular developments in instrumental techniques,
structure determination of polymer blends remains a formidable
challenge. This is, because most electron microscopic
methods are based on observations on thin sections or surfaces
that show a cross-section of the three-dimensional structure or
only some surface topography that can be influenced by the