Enhancement of Polystyrene Nanocomposites with THDACl-Modified Montmorillonite via Melt Compounding
The research findings on PS nanocomposites prepared with N,N,N-trimethyl-1-
hexadecyl ammonium chloride (THDACl) reveal improved dispersion, enhanced
mechanical properties, and increased thermal stability. These advancements have
significant implications for various industries, including automotive, aerospace,
packaging, and electronics, where the nanocomposites can be utilized for lightweight
structural components, flame-resistant coatings, and high-performance packaging
materials. Increasing the interlayer distance (d-spacing) of fractioned sodium
montmorillonite (FMMT-Na) using N,N,N-trimethyl-1-hexadecyl ammonium chloride
(THDACl) is done to improve the compatibility and dispersion of the clay in polymer
matrices. This modification is relevant and beneficial as it enhances the mechanical
properties, barrier performance, and thermal stability of the resulting nanocomposites,
opening up opportunities for various applications in industries such as packaging,
automotive, construction, and electronics. PS nanocomposites were prepared by
incorporating MMT clay using THDACl as a surfactant. The composition ratios included
1-10% weight percentage of MMT with a 1:1 weight ratio of THDACl to MMT. The
melt compounding process involved treating MMT with THDACl, dispersing it in a
solvent, and adding it to melted PS pellets. Characterization techniques, such as XRD,
TEM, SEM, TGA, and mechanical testing, were used to evaluate the nanocomposites.
The results demonstrated improved dispersion, enhanced mechanical properties, and
increased thermal stability. These findings contribute to the optimization of the
nanocomposites for specific applications.
Citation
M. ZID EL KHEIR Belkacem,
(2024-04-30),
"Enhancement of Polystyrene Nanocomposites with THDACl-Modified Montmorillonite via Melt Compounding",
[national]Annales de Chimie - Science des Matériaux, IIETA
ADSORPTION PERFORMANCE OF ANIONIC TEXTILE DYE (NYLOSAN RED N-2RBL) ONTO RAW, SODIC AND FRACTIONATED SODIC INORGANIC CLAY MATERIAL
The inorganic montmorillonitic clay material in raw and
modified forms (sodic and fractionated sodic materials) was
evaluated as adsorbent for anionic textile dye (Nylosan Red N-
2RBL). A various characterization using XRD, XRF, AFM,
FTIR, TG, adsorption of methylene blue and pHPCN of the
considered samples was realized. The experimental results show
that, the adsorption was pH dependent with a high adsorption
capacity of NR dye in acidic range. The pseudo-second-order
kinetic model provided the best fit to the experimental data for
the adsorption of dye by clay materials. The equilibrium
adsorption data were analyzed by Langmuir, Freundlich and
Dubinin–Radushkevich isotherm models. The best fit of
experimental data was obtained by the Dubinin–Radushkevich
isotherm model. The maximum adsorption capacity of the raw
clay calculated by the latest isotherm model is 62.05 mg/g. It is
increased in modified forms (170.11 and 201 mg/g for sodic
clay and fractionated sodified clay materials, respectively).
Increasing solution ionic strength (NaCl, KCl, NaNO3, and
Na2SO4) increased significantly the adsorption of dye
Citation
M. ZID EL KHEIR Belkacem, Naziha LADJAL, Kkaldoun BACHARI, ,
(2020),
"ADSORPTION PERFORMANCE OF ANIONIC TEXTILE DYE (NYLOSAN RED N-2RBL) ONTO RAW, SODIC AND FRACTIONATED SODIC INORGANIC CLAY MATERIAL",
[national]Revue Roumaine de Chimie, ACADEMIA ROMÂNĂ
Influence of octadecylammonium,N,N-dimethylhexadecylammonium,and 1-hexadecyltrimethylammonium chloride upon the fractionatedmontmorillonite
Various alkyl-amines (ammoniums) salts were reacted with fractionated sodic montmorillonite (FNa-MMT) to prepare theorganomontmorillonites. The interlayer d-spacing obtained by X-ray diffraction analysis of FNa-MMT was increased afterthe alkylammonium cations intercalation. The FTIR spectrograms indicate the presence of the different surfactant agents inthe montmorillonite interlayer space. High-resolution thermogravimetric analysis reveals that the thermal decomposition ofthe modified montmorillonite occurs in three steps. For the surface morphologies examined by atomic force microscopy,the measured root-mean-square roughness was increased after the reaction of the FNa-MMT (\2lm) with the different surfactants.
Citation
M. ZID EL KHEIR Belkacem, Naziha ladjal, ,
(2018),
"Influence of octadecylammonium,N,N-dimethylhexadecylammonium,and 1-hexadecyltrimethylammonium chloride upon the fractionatedmontmorillonite",
[national]journal of thermal analysis and calorimetry, springer