Development of hydroxyapatite nanoparticles reinforced chlorinated acrylonitrile butadiene rubber/chlorinated ethylene propylene diene monomer rubber blends

Abstract

Hydroxyapatite nanoparticles (HA) reinforced polymer blend based on chlorinated nitrile rubber (Cl‐NBR) and chlorinated ethylene propylene diene monomer rubber (Cl‐EPDM) were prepared. Resulting blend composites were analyzed with regard to their rheometric processing, crystallinity, glass transition temperature (Tg), mechanical properties, oil resistance, AC conductivity, and transport behavior. The decrease in optimum cure time with the addition of HA is more advantageous for the development of products from these blend nanocomposites. The XRD, FTIR, and SEM confirmed the attachment and uniform dispersion of HA nanoparticles in the Cl‐NBR/Cl‐EPDM blend. The good compatibility between polymer blend and nanoparticles was also deduced by the formation of spherically shaped HA particles in the blend matrix determined by TEM analysis. DSC analysis showed an increase in Tg of the blend with the filler loading. The addition of HA particles to the blend produced a remarkable increase in tensile and tear strength, hardness, AC conductivity, abrasion, and oil resistance. The diffusion of blend composites was decreased with an increase in penetrant size. The diffusion mechanism was found to follow an anomalous trend. Among the blend composites, the sample with 7 phr of HA not only showed good oil and solvent resistance but also a remarkable increase in AC conductivity and mechanical properties.

Natural rubber and copper alumina nanocomposite‐based flexible elastomer‐inorganic hybrid systems

“…Cure time (time required for optimum vulcanization) of the composites reduced with the addition of nanoparticles, which is more economic for the fabrication of rubber goods in rubber industry. [33] The conductive nanoparticles present in the composite easily transfer heat energy through the macromolecular chain, which is responsible for the decrease in cure time with an increase in filler loading. The scorch time (premature vulcanization time) shows a similar trend with the cure time.…”

The effect of tannic acid functional multi‐walled carbon nanotubes on the properties of nitrile rubber/ethylene propylene diene monomer composites

“…Nowadays nanoscience offers a new opportunity to use nanosized particles as compatibilizers for composites. [6] Multi-walled carbon nanotubes (MWCNT) have great potential as rubber fillers owing to the extreme large aspect ratio and the unique properties produced by the rigid chemical structure composed of carbon networks. [7][8][9] MWCNT is interspersed between twophase of the blended rubber due to the great large aspect ratio to force two-phase to "stitch."…”

“…Nowadays nanoscience offers a new opportunity to use nanosized particles as compatibilizers for composites. [ 6 ]…”

Curing, thermal, tensile and flammability characteristics of sepiolite/ethylene propylene diene monomer rubber composites with glut palmitate salt and silane coupling agents

“…[2] EPDM is commonly added with fillers such as natural fiber, [3] carbon black, [4] silica [5] and hydroxyapatite. [6,7] Among various fillers used to produce rubber composites, silica and carbon black are widely used in the preparation and production of elastomeric composites, with the primary goal of improving mechanical and thermal properties while also lowering production costs and, in some cases, the weight of the final rubber products. [8] Although fillers are versatile in industrial applications, their productions typically require high energy consumption.…”