Interfacially-grafted Single Wall Carbon Nanotube / Poly (vinyl alcohol) Composite Fibers

Wonjun Lee; Adam Clancy; Juan  Fernández-Toribio; David Anthony; Edward White; Eduardo Solano; Hannah Leese; Juan Vilatela; Milo Shaffer

doi:10.1016/j.carbon.2019.01.075

Interfacially-grafted Single Wall Carbon Nanotube / Poly (vinyl alcohol) Composite Fibers

Wonjun Lee, Adam Clancy, Juan Fernández-Toribio, David Anthony, Edward White, Eduardo Solano, Hannah Leese, Juan Vilatela, Milo Shaffer

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

28 Downloads (Pure)

Abstract

Nanocomposites are critically influenced by interfacial interactions between the reinforcement and matrix. Polyvinyl alcohol (PVOH) of varying molecular weights were prepared and grafted-to single-walled carbon nanotubes (SWCNTs), to improve the interfacial interaction with a homopolymer PVOH matrix. Nanocomposite fibers were coagulation spun across a broad range of loading fractions, controlled by the spinning dope composition. An intermediate grafted-PVOH molecular weight (10 kDa) maximized grafting ratio, and the final composite mechanical performance; the positive effects were attributed to the increased degree of dispersion of the SWCNTs in the dope, as well as the favorable interface. The PVOH grafting increased the stability of the SWCNT loading fractions (up to 45 wt.%), offering increased strength (up to 1100 MPa) and stiffness (up to 38.5 GPa); at the same time, strain-to-failures remained high (up to 23.3%), resulting in high toughness (up to 125 J g−1).

Original language	English
Pages (from-to)	162-171
Number of pages	10
Journal	Carbon
Volume	146
Issue number	0008-6223
Early online date	23 Jan 2019
DOIs	https://doi.org/10.1016/j.carbon.2019.01.075
Publication status	Published - 1 May 2019

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

Access to Document

10.1016/j.carbon.2019.01.075

CNT-PVOH-PVOH_Manuscript_Resubmission_2019-01-15Accepted author manuscript, 1.62 MBLicence: CC BY-NC-ND

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Hannah Leese
- H.S.Leese@bath.ac.uk
Person: Research & Teaching, Researcher

Cite this

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title = "Interfacially-grafted Single Wall Carbon Nanotube / Poly (vinyl alcohol) Composite Fibers",

abstract = "Nanocomposites are critically influenced by interfacial interactions between the reinforcement and matrix. Polyvinyl alcohol (PVOH) of varying molecular weights were prepared and grafted-to single-walled carbon nanotubes (SWCNTs), to improve the interfacial interaction with a homopolymer PVOH matrix. Nanocomposite fibers were coagulation spun across a broad range of loading fractions, controlled by the spinning dope composition. An intermediate grafted-PVOH molecular weight (10 kDa) maximized grafting ratio, and the final composite mechanical performance; the positive effects were attributed to the increased degree of dispersion of the SWCNTs in the dope, as well as the favorable interface. The PVOH grafting increased the stability of the SWCNT loading fractions (up to 45 wt.%), offering increased strength (up to 1100 MPa) and stiffness (up to 38.5 GPa); at the same time, strain-to-failures remained high (up to 23.3%), resulting in high toughness (up to 125 J g−1).",

author = "Wonjun Lee and Adam Clancy and Juan Fern{\'a}ndez-Toribio and David Anthony and Edward White and Eduardo Solano and Hannah Leese and Juan Vilatela and Milo Shaffer",

year = "2019",

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doi = "10.1016/j.carbon.2019.01.075",

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T1 - Interfacially-grafted Single Wall Carbon Nanotube / Poly (vinyl alcohol) Composite Fibers

AU - Lee, Wonjun

AU - Clancy, Adam

AU - Fernández-Toribio, Juan

AU - Anthony, David

AU - White, Edward

AU - Solano, Eduardo

AU - Leese, Hannah

AU - Vilatela, Juan

AU - Shaffer, Milo

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Nanocomposites are critically influenced by interfacial interactions between the reinforcement and matrix. Polyvinyl alcohol (PVOH) of varying molecular weights were prepared and grafted-to single-walled carbon nanotubes (SWCNTs), to improve the interfacial interaction with a homopolymer PVOH matrix. Nanocomposite fibers were coagulation spun across a broad range of loading fractions, controlled by the spinning dope composition. An intermediate grafted-PVOH molecular weight (10 kDa) maximized grafting ratio, and the final composite mechanical performance; the positive effects were attributed to the increased degree of dispersion of the SWCNTs in the dope, as well as the favorable interface. The PVOH grafting increased the stability of the SWCNT loading fractions (up to 45 wt.%), offering increased strength (up to 1100 MPa) and stiffness (up to 38.5 GPa); at the same time, strain-to-failures remained high (up to 23.3%), resulting in high toughness (up to 125 J g−1).

AB - Nanocomposites are critically influenced by interfacial interactions between the reinforcement and matrix. Polyvinyl alcohol (PVOH) of varying molecular weights were prepared and grafted-to single-walled carbon nanotubes (SWCNTs), to improve the interfacial interaction with a homopolymer PVOH matrix. Nanocomposite fibers were coagulation spun across a broad range of loading fractions, controlled by the spinning dope composition. An intermediate grafted-PVOH molecular weight (10 kDa) maximized grafting ratio, and the final composite mechanical performance; the positive effects were attributed to the increased degree of dispersion of the SWCNTs in the dope, as well as the favorable interface. The PVOH grafting increased the stability of the SWCNT loading fractions (up to 45 wt.%), offering increased strength (up to 1100 MPa) and stiffness (up to 38.5 GPa); at the same time, strain-to-failures remained high (up to 23.3%), resulting in high toughness (up to 125 J g−1).

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