A homogeneous distribution of finely dispersed
fillers in a silica/polymer composite is a prerequisite for
obtaining good mechanical properties of the end
material. In a composite, interfacial interaction between
the fillers and the polymer matrix plays a crucial role in
toughening the composite. In order to achieve a high
particle/polymer area and to distribute the mechanical
stresses within the composite, the composite has to
consist of homogeneously distributed filler particles
which are not agglomerated. Therefore, prior to further
mechanical testing, the chemical structure, morphology
and microstructure of the composites must be analysed.