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Structure And Properties Of Polypropylene-Nanoclay Composites, Raghavendra R. Hegde Dr
Structure And Properties Of Polypropylene-Nanoclay Composites, Raghavendra R. Hegde Dr
Raghavendra R Hegde Dr
The structure, morphology and mechanical properties of polypropylene-nanoclay composites with 1 to 15 wt.% nanoclay additives were investigated. Mixture of intercalated and exfoliated morphology was observed in nanocomposites. At higher weight percentage reinforcement (10–15 wt.%), up to 67 % improvement in tensile modulus is observed. At higher weight percentage, exclusion of clay additives at the boundary of spherulites was observed. This study illustrates that along with the thermodynamic driving force, spherulite formation also drives the ultimate morphology
Investigation Of The Morphology Of Polypropylene-Nanoclay Nanocomposites, Raghavendra R. Hegde Dr
Investigation Of The Morphology Of Polypropylene-Nanoclay Nanocomposites, Raghavendra R. Hegde Dr
Raghavendra R Hegde Dr
The morphology development in polypropylene − nanoclay composites with different weight percentages of nanoclay additives was studied using a combination of wide-angle X-ray diffraction, small-angle X-ray scattering (SAXS), polarized optical microscopy and transmission electron microscopy. SAXS studies showed an increase in long period with increase in additive weight percentage. Thermal analysis showed that even if the clay platelets are not completely exfoliated they can act as effective nucleating agents. Studies indicated that the ultimate morphology formation is influenced by both the thermodynamics of mixing and crystallization and spherulite formation. During spherulite growth, unenclosed clay platelets were excluded at the spherulite …