Abstract The most common polymeric nanocomposites are constituted of organically-modified clays. Generally, these organic modifiers based on quaternary ammonium salts. These systems have as disadvantage the low thermal resistance its under processing. Ionic liquids (IL) with different molecular structures can be used modifier in lamellar clays-based nanocomposites, being promising not only to i...

Thermoplastic elastomers are a special class of polymeric materials that combine the properties of thermo plasticity during processing and rubber-like behaviour in service. They can be processed in conventional plastic processing equipment, such as twin screw extruders, internal batch mixers, extruders and injection moulding machine, but exhibit vulcanized rubber like ultimate properties (i.e. ...

Chitosan-nanoclay bio-hybrid films were successfully crosslinked with glutaraldehyde, genipin and glyoxal. Moisture sensitivity of films decreased as a result of crosslinking which led to improved barrier properties against water vapor and oxygen. Films containing chitosan (6.6 g/m) with genipin (3.3 g/m) and nanoclay (6.6 g/m) had water vapor transmission rate of 72 g × 100 μm/(m × 24 h) which...

Abstract Epoxy resins are prone to serious moisture absorption inspite of their inherent advantages, which can be mitigated by the incorporation montmorillonite nanoclay that provide tortuous path flow moisture. Moisture studies epoxy clay nanocomposites is carried out, analyse effect content, immersion media and temperature. Nanocomposites prepared in 0.5, 1 1.5 wt% using magnetic stirring ult...

C-Phycocyanin (PC) and B-phycoerythrin (PE) are light-harvesting water-soluble phycobiliproteins from microalgae that belong mainly to the cyanobaceria rhodhophytes families. Different methods have been developed for PC PE extraction purification microalgae, offer a high potential their use as additives in sectors such food cosmetics. However, main limitations of using these dyes sensitivity en...

This work evaluated the synergistic effect of citronella essential oil (Ct) and montmorillonite (MMT) (called hybrid compound) incorporated in Poly(lactic acid) (PLA) films at different concentrations (3, 10, 15, 20 wt%). PLA were characterized using X-ray diffraction, SEM, TGA, DSC considering their mechanical properties migration. XRD analysis showed effective interaction between MMT oil. The...

This study was conducted to investigate the influence of the saturating cation on the adsorption of parathion, methyl parathion, fenitrothion, aminoparathion, and paraoxon by montmorillonite suspensions. In all cases the saturating cation distinctly influenced the Freundlich-type adsorption, with adsorption decreasing in the following sequence: Fe—> Ca— > Na-montmorillonite. Adsorption of parat...

In the current study, a green method that can be easily used in different industrial applications, based on modification of sodium exchanged montmorillonite (Na+-Mt) with essential oils (EO) such as thyme oil, thymol and carvacrol was presented. The obtained results show prepared clays-essential hybrids were promising nanomaterials to encapsulate active compounds control their release selective...

Nanomaterials are relatively new and unconventional materials with many useful properties, but their effects on biological systems are poorly understood. Nanoclay is a general term for layered mineral silicate nanoparticles that are ideally suited for use in clay-based nanocomposites. The potential biological hazards of nanoclays have not been addressed, however. Therefore, we investigated the ...

In environmental studies, we need to be able to predict the behaviour of contaminants in more or less complex physico-chemical contexts. The improvement of this prediction partly depends on establishing thermodynamic models that can describe the behaviour of these contaminants and, in particular, the sorption reactions on mineral surfaces. In this way, based on the mass action law, it is possib...