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Copolymerization of Methyl Methacrylate with 4-VinylPyridine Initiated by a Novel Ni(II)a-Benzoinoxime Complex

Identifieur interne : 000237 ( PascalFrancis/Curation ); précédent : 000236; suivant : 000238

Copolymerization of Methyl Methacrylate with 4-VinylPyridine Initiated by a Novel Ni(II)a-Benzoinoxime Complex

Auteurs : Hafida Harrar-Ferfera [Algérie]

Source :

RBID : Pascal:09-0163317

Descripteurs français

English descriptors

Abstract

Copolymerizations of methyl methacrylate (MMA) with 4-vinylpyridine (4VP) were performed from different monomer feed ratios in 1,4-dioxan at 30°C under free radical initiation experimental conditions, using Ni(II)a-Benzoinoxime complex as initiator. The obtained copolymers (PMMA4VP) were examined by FTIR and 1H NMR spectroscopies. The composition of these copolymers was calculated, using 1H NMR spectra and elemental analysis. Monomer reactivity ratios were estimated from Fineman-Ross (FR, rm = 0.550, rv = 1.165) and Kelen-Tudos (KT, rm = 0.559, rv = 1.286) linearization methods, as well as nonlinear error in variables model (EVM) method using the RREVM computer program (RREVM, rm = 0.559, rv = 1.264). These values suggest that MMA-4VP pair copolymerizes randomly. 1H NMR spectra provide information about the stereochemistry of the copolymers in terms of sequence distributions and configurations. These results showed that the age of the Ni complex has an impact not only on its activity towards polymerization reactions but also on the features of the corresponding copolymers, whereas the chemical composition was insensitive to this prominent factor. The mechanism of MMA-4VP copolymerization is consistent with a radical process as supported by microstructure and molecular weight distribution studies. Thermal behaviours of these copolymers were investigated by differential scanning calorimetry and thermogravimetric analysis.
pA  
A01 01  1    @0 0021-8995
A02 01      @0 JAPNAB
A03   1    @0 J. appl. polym. sci.
A05       @2 107
A06       @2 6
A08 01  1  ENG  @1 Copolymerization of Methyl Methacrylate with 4-VinylPyridine Initiated by a Novel Ni(II)a-Benzoinoxime Complex
A11 01  1    @1 HARRAR-FERFERA (Hafida)
A14 01      @1 Laboratoire de Chimie des Polymères, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene @3 DZA @Z 1 aut.
A20       @1 3963-3973
A21       @1 2008
A23 01      @0 ENG
A43 01      @1 INIST @2 1257 @5 354000175036090660
A44       @0 0000 @1 © 2009 INIST-CNRS. All rights reserved.
A45       @0 41 ref.
A47 01  1    @0 09-0163317
A60       @1 P
A61       @0 A
A64 01  1    @0 Journal of applied polymer science
A66 01      @0 USA
C01 01    ENG  @0 Copolymerizations of methyl methacrylate (MMA) with 4-vinylpyridine (4VP) were performed from different monomer feed ratios in 1,4-dioxan at 30°C under free radical initiation experimental conditions, using Ni(II)a-Benzoinoxime complex as initiator. The obtained copolymers (PMMA4VP) were examined by FTIR and 1H NMR spectroscopies. The composition of these copolymers was calculated, using 1H NMR spectra and elemental analysis. Monomer reactivity ratios were estimated from Fineman-Ross (FR, rm = 0.550, rv = 1.165) and Kelen-Tudos (KT, rm = 0.559, rv = 1.286) linearization methods, as well as nonlinear error in variables model (EVM) method using the RREVM computer program (RREVM, rm = 0.559, rv = 1.264). These values suggest that MMA-4VP pair copolymerizes randomly. 1H NMR spectra provide information about the stereochemistry of the copolymers in terms of sequence distributions and configurations. These results showed that the age of the Ni complex has an impact not only on its activity towards polymerization reactions but also on the features of the corresponding copolymers, whereas the chemical composition was insensitive to this prominent factor. The mechanism of MMA-4VP copolymerization is consistent with a radical process as supported by microstructure and molecular weight distribution studies. Thermal behaviours of these copolymers were investigated by differential scanning calorimetry and thermogravimetric analysis.
C02 01  X    @0 001D09D02C
C03 01  X  FRE  @0 Méthacrylate de méthyle copolymère @2 NK @5 01
C03 01  X  ENG  @0 Methyl methacrylate copolymer @2 NK @5 01
C03 01  X  SPA  @0 Metacrilato de metilo copolímero @2 NK @5 01
C03 02  X  FRE  @0 Pyridine(4-vinyl)copolymère @2 NK @5 02
C03 02  X  ENG  @0 Pyridine(4-vinyl) copolymer @2 NK @5 02
C03 02  X  SPA  @0 Piridina(4-vinil) copolímero @2 NK @5 02
C03 03  X  FRE  @0 Rapport réactivité @5 03
C03 03  X  ENG  @0 Reactivity ratio @5 03
C03 03  X  SPA  @0 Relación reactividad @5 03
C03 04  X  FRE  @0 Distribution séquence @5 04
C03 04  X  ENG  @0 Sequence distribution @5 04
C03 04  X  SPA  @0 Distribución secuencia @5 04
C03 05  X  FRE  @0 Copolymérisation solution @5 05
C03 05  X  ENG  @0 Solution copolymerization @5 05
C03 05  X  SPA  @0 Copolimerización solución @5 05
C03 06  X  FRE  @0 Copolymérisation radicalaire @5 06
C03 06  X  ENG  @0 Radical copolymerization @5 06
C03 06  X  SPA  @0 Copolimerización radical @5 06
C03 07  X  FRE  @0 Nickel II Complexe @1 ACT @2 NC @2 NA @5 07
C03 07  X  ENG  @0 Nickel II Complexes @1 ACT @2 NC @2 NA @5 07
C03 07  X  SPA  @0 Niquel II Complejo @1 ACT @2 NC @2 NA @5 07
C03 08  X  FRE  @0 Relation composition propriété @5 08
C03 08  X  ENG  @0 Property composition relationship @5 08
C03 08  X  SPA  @0 Relación composición propiedad @5 08
C03 09  X  FRE  @0 Stabilité thermique @5 09
C03 09  X  ENG  @0 Thermal stability @5 09
C03 09  X  SPA  @0 Estabilidad térmica @5 09
C03 10  X  FRE  @0 Etude expérimentale @5 10
C03 10  X  ENG  @0 Experimental study @5 10
C03 10  X  SPA  @0 Estudio experimental @5 10
C03 11  X  FRE  @0 Microstructure @5 31
C03 11  X  ENG  @0 Microstructure @5 31
C03 11  X  SPA  @0 Microestructura @5 31
C03 12  X  FRE  @0 Polymérisation transfert atome @5 32
C03 12  X  ENG  @0 Atom transfer polymerization @5 32
C03 12  X  SPA  @0 Polimerización transferencia atomo @5 32
C03 13  X  FRE  @0 Propriété thermique @5 33
C03 13  X  ENG  @0 Thermal properties @5 33
C03 13  X  SPA  @0 Propiedad térmica @5 33
C03 14  X  FRE  @0 Copolymérisation transfert atome @4 INC @5 41
N21       @1 117

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Le document en format XML

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<term>Atom transfer polymerization</term>
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<term>Microstructure</term>
<term>Nickel II Complexes</term>
<term>Property composition relationship</term>
<term>Pyridine(4-vinyl) copolymer</term>
<term>Radical copolymerization</term>
<term>Reactivity ratio</term>
<term>Sequence distribution</term>
<term>Solution copolymerization</term>
<term>Thermal properties</term>
<term>Thermal stability</term>
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<term>Méthacrylate de méthyle copolymère</term>
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<term>Rapport réactivité</term>
<term>Distribution séquence</term>
<term>Copolymérisation solution</term>
<term>Copolymérisation radicalaire</term>
<term>Nickel II Complexe</term>
<term>Relation composition propriété</term>
<term>Stabilité thermique</term>
<term>Etude expérimentale</term>
<term>Microstructure</term>
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<div type="abstract" xml:lang="en">Copolymerizations of methyl methacrylate (MMA) with 4-vinylpyridine (4VP) were performed from different monomer feed ratios in 1,4-dioxan at 30°C under free radical initiation experimental conditions, using Ni(II)a-Benzoinoxime complex as initiator. The obtained copolymers (PMMA4VP) were examined by FTIR and
<sup>1</sup>
H NMR spectroscopies. The composition of these copolymers was calculated, using
<sup>1</sup>
H NMR spectra and elemental analysis. Monomer reactivity ratios were estimated from Fineman-Ross (FR, r
<sub>m</sub>
= 0.550, r
<sub>v</sub>
= 1.165) and Kelen-Tudos (KT, r
<sub>m</sub>
= 0.559, r
<sub>v</sub>
= 1.286) linearization methods, as well as nonlinear error in variables model (EVM) method using the RREVM computer program (RREVM, r
<sub>m</sub>
= 0.559, r
<sub>v</sub>
= 1.264). These values suggest that MMA-4VP pair copolymerizes randomly.
<sup>1</sup>
H NMR spectra provide information about the stereochemistry of the copolymers in terms of sequence distributions and configurations. These results showed that the age of the Ni complex has an impact not only on its activity towards polymerization reactions but also on the features of the corresponding copolymers, whereas the chemical composition was insensitive to this prominent factor. The mechanism of MMA-4VP copolymerization is consistent with a radical process as supported by microstructure and molecular weight distribution studies. Thermal behaviours of these copolymers were investigated by differential scanning calorimetry and thermogravimetric analysis.</div>
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<s0>Copolymerizations of methyl methacrylate (MMA) with 4-vinylpyridine (4VP) were performed from different monomer feed ratios in 1,4-dioxan at 30°C under free radical initiation experimental conditions, using Ni(II)a-Benzoinoxime complex as initiator. The obtained copolymers (PMMA4VP) were examined by FTIR and
<sup>1</sup>
H NMR spectroscopies. The composition of these copolymers was calculated, using
<sup>1</sup>
H NMR spectra and elemental analysis. Monomer reactivity ratios were estimated from Fineman-Ross (FR, r
<sub>m</sub>
= 0.550, r
<sub>v</sub>
= 1.165) and Kelen-Tudos (KT, r
<sub>m</sub>
= 0.559, r
<sub>v</sub>
= 1.286) linearization methods, as well as nonlinear error in variables model (EVM) method using the RREVM computer program (RREVM, r
<sub>m</sub>
= 0.559, r
<sub>v</sub>
= 1.264). These values suggest that MMA-4VP pair copolymerizes randomly.
<sup>1</sup>
H NMR spectra provide information about the stereochemistry of the copolymers in terms of sequence distributions and configurations. These results showed that the age of the Ni complex has an impact not only on its activity towards polymerization reactions but also on the features of the corresponding copolymers, whereas the chemical composition was insensitive to this prominent factor. The mechanism of MMA-4VP copolymerization is consistent with a radical process as supported by microstructure and molecular weight distribution studies. Thermal behaviours of these copolymers were investigated by differential scanning calorimetry and thermogravimetric analysis.</s0>
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<s2>NK</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG">
<s0>Methyl methacrylate copolymer</s0>
<s2>NK</s2>
<s5>01</s5>
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<s5>01</s5>
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<s0>Pyridine(4-vinyl)copolymère</s0>
<s2>NK</s2>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="ENG">
<s0>Pyridine(4-vinyl) copolymer</s0>
<s2>NK</s2>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="SPA">
<s0>Piridina(4-vinil) copolímero</s0>
<s2>NK</s2>
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<s0>Rapport réactivité</s0>
<s5>03</s5>
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<fC03 i1="03" i2="X" l="ENG">
<s0>Reactivity ratio</s0>
<s5>03</s5>
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<s5>03</s5>
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<s5>04</s5>
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<s5>04</s5>
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<s5>04</s5>
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<s5>05</s5>
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<s5>05</s5>
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<s5>06</s5>
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<fC03 i1="06" i2="X" l="SPA">
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<s5>06</s5>
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<fC03 i1="07" i2="X" l="FRE">
<s0>Nickel II Complexe</s0>
<s1>ACT</s1>
<s2>NC</s2>
<s2>NA</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG">
<s0>Nickel II Complexes</s0>
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<s2>NA</s2>
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<fC03 i1="07" i2="X" l="SPA">
<s0>Niquel II Complejo</s0>
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<s2>NA</s2>
<s5>07</s5>
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<s5>08</s5>
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<s5>08</s5>
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<s5>08</s5>
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<s5>09</s5>
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<fC03 i1="09" i2="X" l="ENG">
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<s5>09</s5>
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<s5>09</s5>
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<s5>10</s5>
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<s5>10</s5>
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<s5>10</s5>
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<s5>31</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG">
<s0>Microstructure</s0>
<s5>31</s5>
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<s5>31</s5>
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<s5>32</s5>
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<s0>Atom transfer polymerization</s0>
<s5>32</s5>
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<fC03 i1="12" i2="X" l="SPA">
<s0>Polimerización transferencia atomo</s0>
<s5>32</s5>
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<fC03 i1="13" i2="X" l="FRE">
<s0>Propriété thermique</s0>
<s5>33</s5>
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<s0>Thermal properties</s0>
<s5>33</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA">
<s0>Propiedad térmica</s0>
<s5>33</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE">
<s0>Copolymérisation transfert atome</s0>
<s4>INC</s4>
<s5>41</s5>
</fC03>
<fN21>
<s1>117</s1>
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