Development and characterization of sodium polyacrylate/bentonite hydrogel with epoxy resin coating

Composites are relevant to high-performance materials in the aerospace sector and have attracted attention of scientific technological communities. Bentonites present very fine granulometry which enables their use composites. This study showed development water absorbent composite based on sodium polyacrylate, bentonite coated by epoxy resin. Since there gaps quantification near-infrared spectroscopy, especially reflectance analysis (NIRA), this paper shows a methodology (A7200/A5202) polyacrylate bentonite. The error found was 1.45% (95% coefficient determination). effectiveness developed infrared verified showing that values close nominal, for lower content. Besides, scanning electron microscopy (SEM) universal attenuated total reflection (UATR) evidenced coating with Such ensures rapid precise methodologies can be applied quality control materials.