| Description |
Polymer composites are materials with a high application potential in advanced technologies. The topic concerns with a control of polymer-filler interface by surface modification of filler particles and its effect on rheological properties of composites with a particular attention to the occurance of flow instabilities (shark skin, melt fracture etc.), which limit the processing window of polymer materials. Although the effects induced by the presence of filler particles on polymer melt processing are reported in literature, understanding of their origins and mechanisms is still lacking. Systematic study of the influence of particle size, concentration and surface modification on melts elasticity and appearance of flow instabilities will be performed. Moreover, processing properties of the composites including flow instabilities analysis will be studied. The composites will be studied experimentally by different rheological techniques (oscillatory shear, capillary rheometry). Structure of the composites will be characterized by electron microscopy and thermal analysis. |
