Abstract
Abstract This work aims in developing carboxyl functionalised graphene based PP nanocomposites by using melt mixing method to enhance the mechanical and thermal properties. Maleic anhydride grafted polypropylene was used as a compatibilizer to achieve better compatibility between the non-polar polymer and polar nanofiller. FTIR study confirms the presence of functional groups at corresponding absorption levels. TEM and SEM image shows the uniform distribution of COOH-Gr onto the PP matrix with the addition of MA-g-PP onto it. The tensile strength and young’s modulus of PMG5 depicts better improvement of 62% and 20% compared to neat sample. The increase in storage modulus of 19.02% was obtained for PG and 43.48% for PMG samples. The reduction in tan δ peak confirms the minimum heat buildup and as a result, leads to better damping characteristics of the nanofiller incorporated PP matrix.
Highlights
Polymer nanocomposites are the material wherein nanofillers are reinforced in a polymer matrix
Scanning electron microscopy (SEM) image (Figure 8) shows a fibrillated morphological texture, which proves the enhancement in compatibility between polar COOH functionalised graphene (COOH-Gr) and non-polar PP matrix by introducing Maleic anhydride grafted polypropylene (MA-g-PP) as compatibilizer . [18,20]
PP nanocomposite was prepared by incorporating COOH functionalised graphene to investigate the enrichment of mechanical and thermal stability of PP
Summary
Polymer nanocomposites are the material wherein nanofillers are reinforced in a polymer matrix. [3,4] Superior interaction of nanofillers with other particles and improvement in properties is because of high surface area of the nanofillers [1]. Another effect of the nanofillers is the change in glass transition temperature (Tg). Both increase and decrease in Tg have been noticed depends on the interaction between the polymer and nanofiller. Some of the nanofillers used are carbon black, nano clay, carbon nanotubes, graphite oxide, graphene, copper nanoparticles etc. Nanoparticles show improvement in properties at very low loadings. It leads to significant reduction in weight for the same strength, performance and properties
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