Polymer nanocomposites: In situ polymerization of polyamide 6 in the presence of graphene oxide

Research output: Contribution to journalArticle

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Abstract

Polyamide 6 (PA6)/graphene oxide (GO) nanocomposites were prepared via in situ, ring opening polymerization of ε-caprolactam in the presence of both dried powder and colloidally dispersed single layer GO. Characterization of the composites and GO (both as received and after removal from the composites) was carried out using atomic force microscopy (AFM), Fourier transform infra-red spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry and tensile testing. Reduction in the GO during polymerization was observed. So too was functionalization of the GO flakes with PA6 chains. FTIR demonstrates the retention of some carbonyl oxygen functionalities after polymerization. AFM imaging indicated the presence of single layer GO and the sheet height increased to ∼4 nm for graphene sheets after polymerization. This suggests the graphene acts as a base for polymer chain formation, leading to good interfacial interaction between the filler and matrix. Raman data show no evidence of the restoration of sp2 hybrid as a result of polymerization. The nanocomposites are thermally stable while molecular weight and crystallinity have both been affected by GO inclusion. A percentage linear increase in Young's modulus was observed as colloidally dispersed GO content increased. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers
LanguageEnglish
Pages528-537
JournalPolymer Composites
Volume38
Issue number3
Early online date27 May 2015
DOIs
Publication statusPublished - Mar 2017

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Graphite
Oxides
Nanocomposites
Polymers
Polymerization
Infrared spectroscopy
Atomic force microscopy
Fourier transforms
Caprolactam
nylon 6
Ring opening polymerization
Tensile testing
Composite materials
Powders
Restoration
Raman spectroscopy
Thermogravimetric analysis
Fillers
Differential scanning calorimetry
X ray photoelectron spectroscopy

Keywords

  • Graphene Oxide
  • Colloidal Dispersion
  • Polyamide 6
  • In situ Polymerization.

Cite this

@article{8be9c4f492f1444f8855d87ecdae996e,
title = "Polymer nanocomposites: In situ polymerization of polyamide 6 in the presence of graphene oxide",
abstract = "Polyamide 6 (PA6)/graphene oxide (GO) nanocomposites were prepared via in situ, ring opening polymerization of ε-caprolactam in the presence of both dried powder and colloidally dispersed single layer GO. Characterization of the composites and GO (both as received and after removal from the composites) was carried out using atomic force microscopy (AFM), Fourier transform infra-red spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry and tensile testing. Reduction in the GO during polymerization was observed. So too was functionalization of the GO flakes with PA6 chains. FTIR demonstrates the retention of some carbonyl oxygen functionalities after polymerization. AFM imaging indicated the presence of single layer GO and the sheet height increased to ∼4 nm for graphene sheets after polymerization. This suggests the graphene acts as a base for polymer chain formation, leading to good interfacial interaction between the filler and matrix. Raman data show no evidence of the restoration of sp2 hybrid as a result of polymerization. The nanocomposites are thermally stable while molecular weight and crystallinity have both been affected by GO inclusion. A percentage linear increase in Young's modulus was observed as colloidally dispersed GO content increased. POLYM. COMPOS., 2015. {\circledC} 2015 Society of Plastics Engineers",
keywords = "Graphene Oxide, Colloidal Dispersion, Polyamide 6, In situ Polymerization.",
author = "Aidan O'Neill and E Archer and AT McIlhagger and P Lemoine and D Dixon",
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Polymer nanocomposites: In situ polymerization of polyamide 6 in the presence of graphene oxide. / O'Neill, Aidan; Archer, E; McIlhagger, AT; Lemoine, P; Dixon, D.

In: Polymer Composites, Vol. 38, No. 3, 03.2017, p. 528-537.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polymer nanocomposites: In situ polymerization of polyamide 6 in the presence of graphene oxide

AU - O'Neill, Aidan

AU - Archer, E

AU - McIlhagger, AT

AU - Lemoine, P

AU - Dixon, D

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N2 - Polyamide 6 (PA6)/graphene oxide (GO) nanocomposites were prepared via in situ, ring opening polymerization of ε-caprolactam in the presence of both dried powder and colloidally dispersed single layer GO. Characterization of the composites and GO (both as received and after removal from the composites) was carried out using atomic force microscopy (AFM), Fourier transform infra-red spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry and tensile testing. Reduction in the GO during polymerization was observed. So too was functionalization of the GO flakes with PA6 chains. FTIR demonstrates the retention of some carbonyl oxygen functionalities after polymerization. AFM imaging indicated the presence of single layer GO and the sheet height increased to ∼4 nm for graphene sheets after polymerization. This suggests the graphene acts as a base for polymer chain formation, leading to good interfacial interaction between the filler and matrix. Raman data show no evidence of the restoration of sp2 hybrid as a result of polymerization. The nanocomposites are thermally stable while molecular weight and crystallinity have both been affected by GO inclusion. A percentage linear increase in Young's modulus was observed as colloidally dispersed GO content increased. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers

AB - Polyamide 6 (PA6)/graphene oxide (GO) nanocomposites were prepared via in situ, ring opening polymerization of ε-caprolactam in the presence of both dried powder and colloidally dispersed single layer GO. Characterization of the composites and GO (both as received and after removal from the composites) was carried out using atomic force microscopy (AFM), Fourier transform infra-red spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry and tensile testing. Reduction in the GO during polymerization was observed. So too was functionalization of the GO flakes with PA6 chains. FTIR demonstrates the retention of some carbonyl oxygen functionalities after polymerization. AFM imaging indicated the presence of single layer GO and the sheet height increased to ∼4 nm for graphene sheets after polymerization. This suggests the graphene acts as a base for polymer chain formation, leading to good interfacial interaction between the filler and matrix. Raman data show no evidence of the restoration of sp2 hybrid as a result of polymerization. The nanocomposites are thermally stable while molecular weight and crystallinity have both been affected by GO inclusion. A percentage linear increase in Young's modulus was observed as colloidally dispersed GO content increased. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers

KW - Graphene Oxide

KW - Colloidal Dispersion

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