Development and characterization of novel modified red mud nanocomposites based on poly(hydroxy ether) of bisphenol A

Abstract

This study dealt with the use of various quantities of modified red mud as a nanofiller in a poly(hydroxy ether) of bisphenol A (Phe) based matrix. Phe-based polymer nanocomposites reinforced with acidically and organically modified layered red mud were prepared by a conventional solvent-casting technique. The best dispersion occurred in the polymer nanocomposites where the interactions between the functional groups of the polymer matrix and those of the organic substitution of the red mud appeared to be the highest. The particle size of the modified red mud was determined by field emission scanning electron microscopy. The as-synthesized composite films were typically characterized by Fourier transform infrared spectroscopy and X-ray diffraction. The dispersion of the modified fillers within the matrix was studied by transmission electron microscopy. The thermal properties measured by thermogravimetric analysis showed enhanced thermal stability of a series of composite materials.

Red Mud from Brazil: Thermal Behavior and Physical Properties

“…In recent years, many studies have investigated different applications of red mud: as construction materials, − as raw cement products, − in the production of ceramics, − as a geopolymer, , as composite materials, − as a catalyst, − as a coagulant, , as a Fenton reagent, for the capture of CO 2 , − and as a metal, organic, and dye adsorbent. , In order for applications of this residue to be devised, the thermal and physical properties of red mud need to be understood. This investigation has characterized this particular Brazilian red mud in the hopes that applications can be elucidated.…”

The use of bamboo fibres as reinforcements in composites

“…Fibres can be made from the leaves, branches and trunks through chemical process, mechanical needling and scraping or through a steam explosion process. It is extremely resilient and durable as a fi bre and has served as a foundation structure (Khanam et al ., 2011 ;Bhat et al ., 2011 ). In studies comparing it to cotton and polyester, it was found to have a high breaking tenacity, better moisture wicking properties and better moisture absorption.…”

Applications of bauxite residue: A mini-review

“…Similarly, BR nanofiller of 53 µm size was used in poly (hydroxyl ether) of a bisphenol A (Phe)based nanocomposite. A matrix phase in an acidically and organically modified layered BR (as reinforcement) was further prepared by a solvent casting technique (Bhat et al, 2011). The dispersion was found to be good where the interactions between a functional group of polymer and organic substitution of BR appeared to be higher.…”