Synthesis of polyethylene‐grafted multiwalled carbon nanotubes via a peroxide‐initiating radical coupling reaction and by using well‐defined TEMPO and thiol end‐functionalized polyethylenes
Identifieur interne : 001651 ( Main/Exploration ); précédent : 001650; suivant : 001652Synthesis of polyethylene‐grafted multiwalled carbon nanotubes via a peroxide‐initiating radical coupling reaction and by using well‐defined TEMPO and thiol end‐functionalized polyethylenes
Auteurs : Sohaib Akbar [France] ; Emmanuel Beyou [France] ; Philippe Chaumont [France] ; Jérôme Mazzolini [France] ; Edgar Espinosa [France] ; Franck D'Agosto [France] ; Christophe Boisson [France]Source :
- Journal of Polymer Science Part A: Polymer Chemistry [ 0887-624X ] ; 2011-02-15.
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Abstract
Polyethylene (PE), alkoxyamine‐ and thiol‐terminated PEs (PE‐TEMPO and PE‐SH, respectively) can be converted to macroradicals using a peroxide, a thermal cleavage of the alkoxyamine and a hydrogen transfer reaction of the thiol, respectively. The addition of these macroradicals to multiwalled carbon nanotubes (MWCNTs) were compared by performing grafting reactions at 160 °C in 1,3‐dichlorobenzene as solvent. Raman spectroscopy was utilized to follow the introduction of PE on the MWCNTs' surface while thermogravimetric and elemental analysis indicated the extent of this grafting. The grafting ratio was found to be in the range of 19–36 wt %. PE‐functionalized MWCNTs were imaged by transmission electronic microscopy showing a PE layer with various thicknesses covering the surface of nanotubes. It was found that higher levels of grafting were obtained using PE‐2,2,6,6‐tetramethylpiperidinyl‐1‐oxy and PE‐SH rather than a radical grafting reaction in which dicumyl peroxide, PE, and MWCNTs were reacted. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011
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DOI: 10.1002/pola.24508
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Polym. Sci. A Polym. Chem.</title><idno type="ISSN">0887-624X</idno><idno type="eISSN">1099-0518</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-02-15">2011-02-15</date><biblScope unit="volume">49</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="957">957</biblScope><biblScope unit="page" to="965">965</biblScope></imprint><idno type="ISSN">0887-624X</idno></series><idno type="istex">5FE08B62CE70AEBCCBF2E403C7CFF6F98F806DB8</idno><idno type="DOI">10.1002/pola.24508</idno><idno type="ArticleID">POLA24508</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0887-624X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>DCP</term><term>MWCNTs</term><term>TEMPO</term><term>end‐functionalized polyethylene</term><term>hydrogen abstraction</term><term>modification</term><term>nanocomposites</term><term>polyethylene (PE)</term><term>radical grafting</term><term>radical scavenger</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Polyethylene (PE), alkoxyamine‐ and thiol‐terminated PEs (PE‐TEMPO and PE‐SH, respectively) can be converted to macroradicals using a peroxide, a thermal cleavage of the alkoxyamine and a hydrogen transfer reaction of the thiol, respectively. The addition of these macroradicals to multiwalled carbon nanotubes (MWCNTs) were compared by performing grafting reactions at 160 °C in 1,3‐dichlorobenzene as solvent. Raman spectroscopy was utilized to follow the introduction of PE on the MWCNTs' surface while thermogravimetric and elemental analysis indicated the extent of this grafting. The grafting ratio was found to be in the range of 19–36 wt %. PE‐functionalized MWCNTs were imaged by transmission electronic microscopy showing a PE layer with various thicknesses covering the surface of nanotubes. It was found that higher levels of grafting were obtained using PE‐2,2,6,6‐tetramethylpiperidinyl‐1‐oxy and PE‐SH rather than a radical grafting reaction in which dicumyl peroxide, PE, and MWCNTs were reacted. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region><settlement><li>Villeurbanne</li></settlement></list><tree><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Akbar, Sohaib" sort="Akbar, Sohaib" uniqKey="Akbar S" first="Sohaib" last="Akbar">Sohaib Akbar</name></region><name sortKey="Beyou, Emmanuel" sort="Beyou, Emmanuel" uniqKey="Beyou E" first="Emmanuel" last="Beyou">Emmanuel Beyou</name><name sortKey="Beyou, Emmanuel" sort="Beyou, Emmanuel" uniqKey="Beyou E" first="Emmanuel" last="Beyou">Emmanuel Beyou</name><name sortKey="Boisson, Christophe" sort="Boisson, Christophe" uniqKey="Boisson C" first="Christophe" last="Boisson">Christophe Boisson</name><name sortKey="Chaumont, Philippe" sort="Chaumont, Philippe" uniqKey="Chaumont P" first="Philippe" last="Chaumont">Philippe Chaumont</name><name sortKey="D Agosto, Franck" sort="D Agosto, Franck" uniqKey="D Agosto F" first="Franck" last="D'Agosto">Franck D'Agosto</name><name sortKey="Espinosa, Edgar" sort="Espinosa, Edgar" uniqKey="Espinosa E" first="Edgar" last="Espinosa">Edgar Espinosa</name><name sortKey="Mazzolini, Jerome" sort="Mazzolini, Jerome" uniqKey="Mazzolini J" first="Jérôme" last="Mazzolini">Jérôme Mazzolini</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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