M. KADI Souad

MCB

Directory of teachers

Department

Departement of Nature and life sciences

Research Interests

nanocomposites, polymer, clay, thermal stability, characterization, kinetic

Contact Info

University of M'Sila, Algeria

Email : souad.kadi@univ-msila.dz

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Recent Publications

2021

Elaboration et caractérisations de nanoblends à base de polyoléfines

L’objectif de cette thèse est l’élaboration et caractérisations de nanoblends à base de poly (méthacrylate d’éthyle) et d’acétate butyrate de cellulose (PEMA/CAB) de différentes compositions en CAB (30, 50, 70) et en bentonite de Maghnia organiquement modifiée avec le chlorure d’hexadecyl triméthyle ammonium (OMMT). Ces nanomatériaux ont été préparés via le mélange en solution utilisant le tétrahydrofurane (THF) comme solvant.
Citation

M. KADI Souad, (2021), "Elaboration et caractérisations de nanoblends à base de polyoléfines", [national] Université des Sciences et de la Technologie ouari Boumediene

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2019-12-08

Morphology and Thermal Properties of Nano-Blends Based on Cellulose Acetate Butyrate, Poly (ethyl methacrylate) and An Organically Modified Algerian Bentonite

Poly (ethyl methacrylate)/Cellulose acetate butyrate/organically modified Algerian Bentonite nano-blends (PEMA/CAB/OMMT) are prepared via solution intercalation method. Transmission electron microscopy (TEM) investigations reveal that depending on the OMMT loading, intercalated and exfoliated silicate layers nano-blends were obtained. These nano-blends exhibit an overall improved thermal stability compared to the pure (PEMA/CAB) blend as evidenced by thermogravimetric analysis (TGA).
Citation

M. KADI Souad, Kamel Ouaad, Said Djadoun, Luc Vincent, Nicolas Sbirrazzuoli, , (2019-12-08), "Morphology and Thermal Properties of Nano-Blends Based on Cellulose Acetate Butyrate, Poly (ethyl methacrylate) and An Organically Modified Algerian Bentonite", [national] Macromolecular Symposia , Wiley-VCH Verlag

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2018-04-09

Morphology and thermal stability of cellulose acetate butyrate and poly (ethyl methacrylate) nanoblends

Enhancing miscibility, mechanical and thermal properties of polymer blends by adding nanofiller has received increasing attention in both scientific and industrials communities. Ternary nanoblends (PEMA/CAB/OMMT) based on cellulose acetate butyrate/ poly (ethyl methacrylate) blends, of different ratios (30/70, 50/50 and 70/30), and an organically modified bentonite (OMMT) (1, 2 and 4%) were prepared by solution method. The PEMA/CAB/OMMT samples were characterized by transmission electronic microscopy (TEM), Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). These nanoblends were elaborated for the purpose of studying the effect of OMMT on the morphology and thermal behavior of PEMA/CAB blends.
In order to have more information on the morphology of the nanoblends at the nanometric scale, a study was carried out by TEM. The PEMA/CAB/OMMT1% and PEMA/CAB/OMMT4% were analyzed at different level of magnifications. According to the TEM micrographs, a better dispersion of the OMMT is observed with the nanoblend (70/30/1%) compared to the system with 4% of OMMT. TEM micrographs highlight the formation of nanomaterial of intercalated and intercalated/partially exfoliated structures.
The single Tg observed with the PEMA/CAB blends and their nanoblends is an evidence of their miscibility.
Moreover, the presence of the OMMT in the PEMA/CAB matrix has a positive influence on their thermal stability. Thermograms of PEMA/CAB/OMMT systems show a better thermal stability than the virgin blend.
Keywords: morphology, thermal properties, poly (ethyl methacrylate), cellulose acetate butyrate, intercalated nanoblends.
Citation

M. KADI Souad, Kamel Ouaad, Said Djadoun, , (2018-04-09), "Morphology and thermal stability of cellulose acetate butyrate and poly (ethyl methacrylate) nanoblends", [international] 12th International IUPAC Conference on Polymer-Solvent Complexes and Intercalates , Institut Laue-Langevin, Grenoble, France

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2017-02-07

Thermal stability and kinetic study of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared by in situ polymerization in presence of an Algerian bentonite

Poly(ethyl methacrylate-co-acrylonitrile) (PEAMN20) nanocomposites were successfully prepared viafree radical in situ polymerization using a bentonite from Algeria modified by Hexadecyltrimethy-lammonium chloride (HDTMA). X-ray diffraction (XRD) and transmission electronic microscopy (TEM)investigations revealed that depending on the OMMT loading, intercalated or partially exfoliatednanocomposites were obtained. These nanocomposites exhibited an overall improved thermal stabil-ity and an increase in their glass transition temperature compared to the pure copolymer (PEMAN20) asevidenced by Thermogravimetric (TGA) and Differential Scanning Calorimetry (DSC) analysis.Apparent activation energies (E) of thermal decomposition of the elaborated nanocomposites, deter-mined by Tang method, were higher than those of the virgin copolymer.The significant increase of (E), observed with PEMAN20/OMMT (1 wt%) confirmed the change in thedegradation mechanism with OMMT loading and the ratio of intercalated/exfoliated structures.
Citation

M. KADI Souad, Said djadoun, Nicolas Sbirrazzuoli, , (2017-02-07), "Thermal stability and kinetic study of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared by in situ polymerization in presence of an Algerian bentonite", [national] Thermochimica Acta , Elsevier

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2016-12-15

Thermal behavior of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared in the presence of an Algerian bentonite via solution intercalation and in situ polymerization

Nanocomposites based on Poly (ethyl methacrylate-
co-acrylonitrile) containing 20 mol% of acrylonitrile
(PEMAN20) and a bentonite from Algeria, modified
by Hexadecyltrimethylammonium chloride (HDTMA),
were successfully prepared via solution method and in situ
polymerization using tetrahydrofuran (THF) as a solvent.
Interactions between the clay and polymer matrix occurred
and were evidenced by Fourier transform infrared spectroscopy
(FTIR). Depending on the clay loading, intercalated
or mixed partially exfoliated nanocomposites,
investigated by X-ray diffraction (XRD) and transmission
electronic microscopy (TEM), were obtained. All elaborated
hybrids exhibited an overall improved thermal stability
and a moderate increase in their glass transition
temperatures compared to virgin (PEMAN20) as evidenced
by thermogravimetric (TG) and differential scanning calorimetry
(DSC) analyses. Apparent activation energies Ea
of thermal decomposition of these materials were estimated
using Tang’s method and showed that higher Ea values
were obtained with virgin PEMAN20 compared to its
sPEMAN20/OMMT (2 or 4 mass%) nanocomposites.
Different thermal decomposition behaviors were, however,
observed with hybrids prepared via in situ polymerization.Nanocomposites prepared in the presence of low clay
loading (1 % by mass) via both methods were of partially
exfoliated structures. The increase of their apparent activation
energies, compared to virgin PEMAN20 or
PEMAN20/OMMT (2 or 4 mass%) nanocomposites,confirmed the change in the degradation mechanism with
the clay loading and the intercalated/exfoliated structures.
Citation

M. KADI Souad, Said Djadoun, , (2016-12-15), "Thermal behavior of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared in the presence of an Algerian bentonite via solution intercalation and in situ polymerization", [national] Journal of Thermal Analysis and Calorimetry , Springer

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2014

Nanoblends based on cellulose acetate butyrate, poly (ethyl methacrylate) and an Algerian bentonite

It is rather rare to find a single polymer that possesses all required properties to be used in a specific application, for instance as a coating material in the field of drug delivery systems.
Blending two polymers of complementary properties and different drug release rates, an inexpensive way, expected to produce materials with desired properties has been suggested as a solution by few authors. Unfortunately, this is not always the case since most pairs of polymers do not mix, giving rise to heterogeneous systems with properties usually far from those initially targeted.
This communication will focus on its first part on the elaboration of novel materials based on blends of different ratios of Cellulose acetate butyrate (CAB) and poly (ethyl methacrylate) (PEMA). Phase behavior and thermal analyses of these blends were then investigated by differential scanning calorimetry (DSC) and thermogravimetry (TGA).
Depending on the blend composition, favorable specific interactions occurred within these blends and were evidenced by Fourier transform infrared spectroscopy (FTIR).
Homogeneous miscible blends, displaying a single glass transition temperature (Tg), intermediate between those of pure constituents and blends exhibiting two Tg different from those of pure constituents were observed.
The obtained results also confirmed the effect of blend composition on their morphology and degradation behaviour. Moreover, significant enhanced thermal stability, increasing with CAB content, was observed with these blends compared to neat PEMA.
The second part of this contribution concerns the elaboration by solution intercalation method and thermal analyses of ternary hybrids based on 1 to 4 % by weight of an organically modified bentonite (OMMT), originated from Algeria, cellulose acetate butyrate and poly(ethyl methacrylate),carried out by DSC and TGA. Enhanced thermal stability of these hybrids compared to their corresponding blends was confirmed as illustrated in Figure 1.
Keywords: Thermal analysis, phase behavior, specific interactions, miscibility, Cellulose acetate butyrate, poly (ethyl methacrylate), ternary hybrids.
Citation

M. KADI Souad, Said Djadoun, , (2014), "Nanoblends based on cellulose acetate butyrate, poly (ethyl methacrylate) and an Algerian bentonite", [international] 247th ACS National Meeting & exposition , Dallas, USA

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Thermal behaviour of poly (ethyl methacrylate)/bentonite nanocomposites prepared via in situ polymerization initiated by azobis isobutyronitrile or Ni (II) α-Benzoinoxime complex

Thermal behaviour of poly (ethyl methacrylate)/bentonite nanocomposites prepared via in situ polymerization initiated by azobis isobutyronitrile or Ni (II) α-Benzoinoxime complex.
Citation

M. KADI Souad, Kamel Ouaad, Said Djadoun, Luc Vincent, Nicolas Sbirrazzuoli, , (2014), "Thermal behaviour of poly (ethyl methacrylate)/bentonite nanocomposites prepared via in situ polymerization initiated by azobis isobutyronitrile or Ni (II) α-Benzoinoxime complex", [international] 2nd international conference on Bioinspired and Biobased Chemistry & Materials , Nice, France

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Clay loading effect on morphology and thermal stability of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared via solution method in presence of an Algerian bentonite

Clay loading effect on morphology and thermal stability of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared via solution method in presence of an Algerian bentonite - Archive ouverte HAL Arrêt de service programmé du vendredi 10 juin 16h jusqu’au lundi 13 juin 9h. Pour en savoir plus Accéder directement au contenu Accéder directement à la navigation Toggle navigation HAL HAL - Archives Ouvertes La connaissance libre et partagée Accueil Dépôt Consultation Les derniers dépôts Par type de publication Par discipline Par année de publication Par structure de recherche Les portails de l'archive Recherche Documentation hal-01089866, version 1 Poster Clay loading effect on morphology and thermal stability of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared via solution method in presence of an Algerian bentonite.
Citation

M. KADI Souad, Amar Djadoun, Said Djadoun, Nicolas Sbirrazzuoli, , (2014), "Clay loading effect on morphology and thermal stability of poly (ethyl methacrylate-co-acrylonitrile) nanocomposites prepared via solution method in presence of an Algerian bentonite", [international] 2nd international conference on Bioinspired and Biobased Chemistry & Materials , Nice, France

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2012

Preparation of nanocomposites based on poly (methyl methacrylate-co-4-vinylpyridine) via solution method: Thermal properties

Preparation of nanocomposites based on poly (methyl methacrylate-co-4-vinylpyridine) via solution method: Thermal properties.
Citation

M. KADI Souad, Kamel Ouaad, Said Djaoun, , (2012), "Preparation of nanocomposites based on poly (methyl methacrylate-co-4-vinylpyridine) via solution method: Thermal properties", [international] 244th ACS National Meeting & expositin, Philadelphia, PA , Philadelphia, PA

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Elaboration of Nanocomposites Based on Poly (Ethyl Methacrylate-co-Acrylonitrile) by in Situ Polymerization Using an Algerian Bentonite. Thermal Stability and Kinetic Study

This contribution focuses on the synthesis and characterization of nanocomposites based on poly (ethyl methacrylate-co-acrylonitrile) (PEMAN) and different loadings of an organically modified bentonite from Algeria prepared via in situ polymerization. TEM images and X-ray patterns revealed that depending on the loading of this clay, intercalated or partially exfoliated nanocomposites were obtained. These nanocomposites showed an increase in their glass transition temperature compared to the pure copolymer as investigated by Differential Scanning Calorimetry and improved thermal stability as evidenced by Thermogravimetric analysis and kinetics of their thermal degradation. Activation energies (Ea) of thermal decomposition of PEMAN and its nanocomposites were determined by Flynn–Wall–Ozawa and Kissinger-Akahira-Sunose methods. The changes in (Ea) value with the level of conversion suggest a significant improved thermal stability of the nanocomposites compared to the copolymer.
Citation

M. KADI Souad, Said Djadoun, , (2012), "Elaboration of Nanocomposites Based on Poly (Ethyl Methacrylate-co-Acrylonitrile) by in Situ Polymerization Using an Algerian Bentonite. Thermal Stability and Kinetic Study", [international] INTERNATIONAL CONFERENCE NANOMATERIALS: APPLICATIONS AND PROPERTIES (NAP-2012) , Alushta, the Crimea, Ukraine

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Preparation and Characterization of Nanocomposite Based on Poly (ethyl methacrylate-co-acrylonitrile) and an Algerian Organically Modified Bentonite via In Situ Polymerization

The present contribution focuses on the synthesis and characterization for the first time, of nanocomposites prepared via in situ polymerization using a bentonite, originated from Algeria, modified by hexadecyltrimethylammonium chloride (OBT) and poly (ethyl methacrylate-co-acrylonitrile (PEMAN) as a matrix.
These nanocomposites were qualitatively characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Proton Nuclear Magnetic Resonance Spectroscopy (1H NMR).
X-Ray Diffraction (DRX) and Transmission Electron Microscopy (TEM) analysis of the elaborated materials confirmed the formation of intercalated-partially exfoliated nanocomposites.
These nanocomposites showed a significant increase in their glass transition temperature compared to the pure copolymer as investigated by Differential Scanning Calorimetry (DSC) and improved thermal stability as evidenced by Thermogravimetric analysis (TGA) and kinetics of their thermal degradation.
Keywords: poly (ethyl methacrylate-co-acrylonitrile), hexadecyltrimethylammonium chloride, intercalated nanocomposite, Maghnia bentonite, morphology, thermal stability.
Citation

M. KADI Souad, Kamel Ouaad, Said Djdoun, , (2012), "Preparation and Characterization of Nanocomposite Based on Poly (ethyl methacrylate-co-acrylonitrile) and an Algerian Organically Modified Bentonite via In Situ Polymerization", [international] 244th ACS National Meeting & expositin, Philadelphia, PA , Philadelphia, PA

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2010

Elaboration and thermal bihaviour of nanocomposites based on poly (ethyl methacrylate–co-acrylonitrile) and an organically modified bentonite

This contribution will report on its first part on the preparation via in situ polymerization and solution intercalation method of nanocomposites based on an organically modified Maghnia bentonite (OBT) originated from Algeria and copolymers of ethyl methacrylate with acrylonitrile (PEMAN) prepared in THF at 60°C using AIBN as initiator.
The structure, morphology and thermal behavior of the elaborated materials investigated by FTIR, 1HNMR, XRD, TEM, DSC and TGA will then be presented.
Mixed intercalated + exfoliated (PEMAN) /OBT nanocomposites evidenced by both XRD and TEM were successfully prepared via in situ polymerization and solution intercalation method.
The elaborated PEMAN/OBT nanocomposites exhibited a significant improved thermal stability compared to their virgin copolymers as investigated by TGA.
This contribution will report on its first part on the preparation via in situ polymerization and solution intercalation method of nanocomposites based on an organically modified Maghnia bentonite (OBT) originated from Algeria and copolymers of ethyl methacrylate with acrylonitrile (PEMAN) prepared in THF at 60°C using AIBN as initiator.
The structure, morphology and thermal behavior of the elaborated materials investigated by FTIR, 1HNMR, XRD, TEM, DSC and TGA will then be presented.
Mixed intercalated + exfoliated (PEMAN) /OBT nanocomposites evidenced by both XRD and TEM were successfully prepared via in situ polymerization and solution intercalation method.
The elaborated PEMAN/OBT nanocomposites exhibited a significant improved thermal stability compared to their virgin copolymers as investigated by TGA.
Key Words: Maghnia bentonite, poly (ethyl methacrylate–co-acrylonitrile) nanocomposites and thermal properties.
Citation

M. KADI Souad, (2010), "Elaboration and thermal bihaviour of nanocomposites based on poly (ethyl methacrylate–co-acrylonitrile) and an organically modified bentonite", [international] International Conference in Nanomaterial and Renewable Energy ICNMRE-Safi, Morocco , Safi, Morocco

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