CHARACTERIZATION OF THE FLOWING BEHAVIOUR OF TWO (2) POLYMETHACRYLATE METHYL DURING IMPLEMENTATION BY EXPERIMENTAL MEASUREMENT OF THE MELT FLOW FLUIDITY INDEX FOR THE RECYCLING OF USED PLASTICS

The present study consists in obtaining rheological data of two polymers from the experimental data obtained from the measurements of their melt indices and using a simple apparatus, the "meltindexer? or ?meltflixer" currently available in the polymers processing industry. The objective of this work is to model the behavior of two (2) polymethacrylate methyl polymers in the process of implementation. The methodology used consists of conducting tests associated with the metrology of the melt flow index (MFI or IF), replacing the standardized conditions of these tests by a selection of masses and adjustable temperatures. The results obtained made it possible to produce rheograms and a characterization of the non-Newtonian and viscofluidifying behavior of the polymers studied. The pseudo-plastic behavior of the selected polymers was determined for which it was determined: - their yield stress, 1. the consistency K 2. their flow index n, 3. and the limit viscosity . From a practical point of view, the lawfulness of these descriptive tests of the polymer for low shear rates [0,1; 10 s-1] applied. danger of indiscriminate dumping of wastes as they affect human health.