New strategies were developed which incorporate silica nanoparticles (<30 nm) into a nylon‐6 matrix, to form technically interesting hybrid nanocomposites with improved stiffness. Silica particles retained their original shape and size (10–30 nm), are mono‐dispersed and mainly non‐agglomerated as shown by TEM. Mechanical tests on the composites were conducted and showed that with less than 0.1 volume fraction of silica addition the E‐modulus of the nanocomposite increased when compared with neat nylon‐6. Furthermore, the rheological properties of the nanocomposites were determined. The viscosity showed a very dependant behavior at different filler loadings. The viscosity of highly filled samples was mainly caused by interactions between particles.
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Rodríguez‐García et al. (2004) studied this question.
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