Synthesis and thermal behavior of poly(methyl methacrylate)/Maghnia bentonite nanocomposite prepared at room temperature via in situ polymerization initiated by a new Ni(II)α‐benzoinoxime complex
Identifieur interne : 000091 ( France/Analysis ); précédent : 000090; suivant : 000092Synthesis and thermal behavior of poly(methyl methacrylate)/Maghnia bentonite nanocomposite prepared at room temperature via in situ polymerization initiated by a new Ni(II)α‐benzoinoxime complex
Auteurs : Kamel Ouaad [Algérie] ; Saïd Djadoun [Algérie] ; Hafida Ferfera-Harrar [Algérie] ; Nicolas Sbirrazzuoli [France] ; Luc Vincent [France]Source :
- Journal of Applied Polymer Science [ 0021-8995 ] ; 2011-03-15.
Descripteurs français
- Pascal (Inist)
- Argile, Argile organique, Bentonite, Etude expérimentale, Matériau composite, Morphologie, Méthacrylate de méthyle polymère, Nanocomposite, Nickel II Complexe, Oxime, Polymérisation catalyseur complexe, Propriété rhéologique, Propriété thermique, Préparation, Stabilité thermique, Structure moléculaire, Température transition vitreuse, Viscosité intrinsèque.
- Wicri :
- topic : Matériau composite.
English descriptors
- KwdEn :
- Bentonite, Clay, Complex catalyst polymerization, Composite material, Experimental study, Glass transition temperature, Intrinsic viscosity, Methyl methacrylate polymer, Molecular structure, Morphology, Nanocomposite, Ni(II)α‐ benzoinoxime complex, Nickel II Complexes, Organic clay, Oxime, Preparation, Rheological properties, Thermal properties, Thermal stability, in situ polymerization, nanocomposite, poly(methyl methacrylate), thermal stability.
Abstract
Poly(methyl methacrylate) (PMMA) and poly(methyl methacrylate)/clay nanocomposite (PMMA/OBT) were successfully prepared in dioxan at room temperature via in situ radical polymerization initiated by a new Ni(II)α‐ Benzoinoxime complex as a single component in presence of 3% by weight of an organically modified bentonite (OBT) (originated from Maghnia, Algeria) and characterized by FTIR, 1H‐NMR and viscometry. Mainly intercalated and partially exfoliated PMMA/OBT nanocomposite was elaborated and evidenced by X‐Ray diffraction (XRD) and transmission electron microscopy (TEM). The intrinsic viscosity of PMMA/OBT nanocomposite is much higher than the one of pure PMMA prepared under the same conditions. Differential scanning calorimetry (DSC) displayed an increase of 10°C in the glass transition temperature of the elaborated PMMA/OBT nanocomposite relative to the one of pure PMMA. Moreover, the TGA analysis confirms a significant improvement of the thermal stability of PMMA/OBT nanocomposite compared to virgin PMMA: the onset degradation temperature of the nanocomposite, carried out under nitrogen atmosphere, increased by more than 45°C. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Url:
DOI: 10.1002/app.32872
Affiliations:
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ISTEX:9E452543FD162D9114EBB564EA10D005A8B765DELe document en format XML
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Sci.</title><idno type="ISSN">0021-8995</idno><idno type="eISSN">1097-4628</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-03-15">2011-03-15</date><biblScope unit="volume">119</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="3227">3227</biblScope><biblScope unit="page" to="3233">3233</biblScope></imprint><idno type="ISSN">0021-8995</idno></series><idno type="istex">9E452543FD162D9114EBB564EA10D005A8B765DE</idno><idno type="DOI">10.1002/app.32872</idno><idno type="ArticleID">APP32872</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-8995</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bentonite</term><term>Clay</term><term>Complex catalyst polymerization</term><term>Composite material</term><term>Experimental study</term><term>Glass transition temperature</term><term>Intrinsic viscosity</term><term>Methyl methacrylate polymer</term><term>Molecular structure</term><term>Morphology</term><term>Nanocomposite</term><term>Ni(II)α‐ benzoinoxime complex</term><term>Nickel II Complexes</term><term>Organic clay</term><term>Oxime</term><term>Preparation</term><term>Rheological properties</term><term>Thermal properties</term><term>Thermal stability</term><term>in situ polymerization</term><term>nanocomposite</term><term>poly(methyl methacrylate)</term><term>thermal stability</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Argile</term><term>Argile organique</term><term>Bentonite</term><term>Etude expérimentale</term><term>Matériau composite</term><term>Morphologie</term><term>Méthacrylate de méthyle polymère</term><term>Nanocomposite</term><term>Nickel II Complexe</term><term>Oxime</term><term>Polymérisation catalyseur complexe</term><term>Propriété rhéologique</term><term>Propriété thermique</term><term>Préparation</term><term>Stabilité thermique</term><term>Structure moléculaire</term><term>Température transition vitreuse</term><term>Viscosité intrinsèque</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Matériau composite</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Poly(methyl methacrylate) (PMMA) and poly(methyl methacrylate)/clay nanocomposite (PMMA/OBT) were successfully prepared in dioxan at room temperature via in situ radical polymerization initiated by a new Ni(II)α‐ Benzoinoxime complex as a single component in presence of 3% by weight of an organically modified bentonite (OBT) (originated from Maghnia, Algeria) and characterized by FTIR, 1H‐NMR and viscometry. Mainly intercalated and partially exfoliated PMMA/OBT nanocomposite was elaborated and evidenced by X‐Ray diffraction (XRD) and transmission electron microscopy (TEM). The intrinsic viscosity of PMMA/OBT nanocomposite is much higher than the one of pure PMMA prepared under the same conditions. Differential scanning calorimetry (DSC) displayed an increase of 10°C in the glass transition temperature of the elaborated PMMA/OBT nanocomposite relative to the one of pure PMMA. Moreover, the TGA analysis confirms a significant improvement of the thermal stability of PMMA/OBT nanocomposite compared to virgin PMMA: the onset degradation temperature of the nanocomposite, carried out under nitrogen atmosphere, increased by more than 45°C. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li><li>Wilaya d'Alger</li></region><settlement><li>Alger</li></settlement></list><tree><country name="Algérie"><region name="Wilaya d'Alger"><name sortKey="Ouaad, Kamel" sort="Ouaad, Kamel" uniqKey="Ouaad K" first="Kamel" last="Ouaad">Kamel Ouaad</name></region><name sortKey="Djadoun, Said" sort="Djadoun, Said" uniqKey="Djadoun S" first="Saïd" last="Djadoun">Saïd Djadoun</name><name sortKey="Djadoun, Said" sort="Djadoun, Said" uniqKey="Djadoun S" first="Saïd" last="Djadoun">Saïd Djadoun</name><name sortKey="Ferfera Arrar, Hafida" sort="Ferfera Arrar, Hafida" uniqKey="Ferfera Arrar H" first="Hafida" last="Ferfera-Harrar">Hafida Ferfera-Harrar</name><name sortKey="Ouaad, Kamel" sort="Ouaad, Kamel" uniqKey="Ouaad K" first="Kamel" last="Ouaad">Kamel Ouaad</name></country><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Sbirrazzuoli, Nicolas" sort="Sbirrazzuoli, Nicolas" uniqKey="Sbirrazzuoli N" first="Nicolas" last="Sbirrazzuoli">Nicolas Sbirrazzuoli</name></region><name sortKey="Vincent, Luc" sort="Vincent, Luc" uniqKey="Vincent L" first="Luc" last="Vincent">Luc Vincent</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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