NickelMaghrebV1, Main, Exploration, bibRecord, 000195

Elaboration and Thermal Analysis of Nanocomposites Based on Poly(methyl methacrylate-co-4-vinylpyridine) and Maghnia Bentonite

Identifieur interne : 000195 ( Main/Exploration ); précédent : 000194; suivant : 000196

Elaboration and Thermal Analysis of Nanocomposites Based on Poly(methyl methacrylate-co-4-vinylpyridine) and Maghnia Bentonite

Auteurs : Kamal Ouaad [Algérie] ; Saïd Djadoun [Algérie]

Source :

Journal of applied polymer science [ 0021-8995 ] ; 2013.

RBID : Pascal:13-0363259

Descripteurs français

Pascal (Inist)
- Nanocomposite, Méthacrylate de méthyle copolymère, Bentonite, Argile organique, Pyridine(4-vinyl)copolymère, Préparation, Stabilité thermique, Température transition vitreuse, Propriété thermique, Copolymérisation catalyseur complexe, Nickel II Complexe, Effet concentration, Morphologie, Etude expérimentale, Matériau composite.
Wicri :
- topic : Matériau composite.

English descriptors

KwdEn :
- Bentonite, Complex catalyst copolymerization, Composite material, Concentration effect, Experimental study, Glass transition temperature, Methyl methacrylate copolymer, Morphology, Nanocomposite, Nickel II Complexes, Organic clay, Preparation, Pyridine(4-vinyl) copolymer, Thermal properties, Thermal stability.

Abstract

Nanocomposites based on an organically modified bentonite, from Maghnia Algeria (OBT) and a copolymer of methyl methacrylate with 4-vinylpyridine (PMM4VP) synthesized in dioxan at room temperature using a neutral Ni(II)α-benzoinoxime complex as a single component initiator, were elaborated via solution intercalation method and characterized by several techniques. X-ray diffraction and transmission electron microscopy investigations indicate that mainly exfoliated and intercalated PMM4VP/OBT nanocomposites were elaborated and that the degree of exfoliation decreases with an increase of the OBT loading. Thermal analyses of these nanocomposites compared with their virgin copolymer confirmed a significant improvement of their thermal stability as evidenced by an increase of 28°C in their onset degradation temperatures. In addition, differential scanning calorimetry displayed an increase in the range of 12-18°C in their glass transition temperatures relative to their virgin copolymer.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Nanocomposites based on an organically modified bentonite, from Maghnia Algeria (OBT) and a copolymer of methyl methacrylate with 4-vinylpyridine (PMM4VP) synthesized in dioxan at room temperature using a neutral Ni(II)α-benzoinoxime complex as a single component initiator, were elaborated via solution intercalation method and characterized by several techniques. X-ray diffraction and transmission electron microscopy investigations indicate that mainly exfoliated and intercalated PMM4VP/OBT nanocomposites were elaborated and that the degree of exfoliation decreases with an increase of the OBT loading. Thermal analyses of these nanocomposites compared with their virgin copolymer confirmed a significant improvement of their thermal stability as evidenced by an increase of 28°C in their onset degradation temperatures. In addition, differential scanning calorimetry displayed an increase in the range of 12-18°C in their glass transition temperatures relative to their virgin copolymer.</div>
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Elaboration and Thermal Analysis of Nanocomposites Based on Poly(methyl methacrylate-co-4-vinylpyridine) and Maghnia Bentonite

Elaboration and Thermal Analysis of Nanocomposites Based on Poly(methyl methacrylate-co-4-vinylpyridine) and Maghnia Bentonite

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

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Pour manipuler ce document sous Unix (Dilib)

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