Abstract
The dynamic mechanical properties of Zinc oxide (ZnO) reinforced Linear low density polyethylene (LLDPE) high performance composites were analyzed with special reference to the filler loading and temperature. The filler loading was varied from 0 to 20 wt% at −30 and +30 °C. The composites were prepared by conventional melt compounding by mixing the filler and polymer in a twin screw micro-compounder followed by molding in a micro-injection molding machine. The storage and loss moduli values showed an increment of about 309 and 248% at 15 wt% filler loading at 30 °C. The degree of entanglement showed an outstanding increase of 178 and 308% for the composite having 15 wt% filler at −30 and +30 °C. Storage modulus and damping parameters were predicted according to different equations and were in agreement with the experimental results. The mechanical and morphological analysis of the composites exhibited a good interfacial adhesion between the polymer and filler which was in correlation with tensile properties of these composites. The viscoelastic characterization reported in this work for the composite might be useful for a variety of biomedical implant applications.
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