Nanoparticle morphology aspect ratio

Conducting-polymer nanoparticles are a distinct structural morphology with aspect ratios of roughly 1 1 1. As is the case with other forms of nanoparticle, such as metallic and metal oxides, these materials have several potential physical and chemical benefits. They have high surface-area-to-volume ratios and high radii of curvature which drastically alter the surface morphology in comparison to bulk polymer strucmres. This effect, in common with other nanostmctures, may lead to enhancements of alterations in electrocatalytic processes. Nanoparticles can also be formulated to be stable suspensions, which can be processed as if they were a true solution. This has significant benefits for production and... 

The potential of nanoparticles for the damage resistance of polymers enhancement depend on several factors such as aspect ratio [94], hardness [95] and shape [97] as the nanoparticles structural parameters, which should be considered along with the morphological parameters like orientation [94], clustering [95] and weight content [94-97]. 

This chapter surveys the strong influence of the quality of dispersion, structure, morphology, and aspect ratio on the properties of PI nanocomposites containing various nanoparticles with different shapes and sizes. X-ray diflEraction and TGA measurements confirm that... 

Their nanoscale dimensions, responsible for their high specific surface (from 200 to 700 m /g) and for the significant aspect ratio (from 100 to 1000), confer on th dramatic properties linked to their capacity of confinement within material. Although the majority of studies reported in the literature mainly concern effects of nanoparticles on foam morphology, some studies have shown the benefit of nanoscale fillers on the final properties of polymer nanocomposite foams such as mechanical, thermal, and barrier properties. 

The high mechanical properties that nanocellnlose provides to composites are related to the rigid network of nanocrystals in which the tension transfer is facilitated by hydrogen bonds between the nanoparticles [72] and are also due to the crystals morphology that presents a high aspect ratio, in particularly, when they are obtained in the form of nanowhiskers. The aspect ratio depends mainly on factors such as type of fiber, where the nanocellulose was extracted and the extraction method [78,79]. 

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