Polymer composites prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of graphene-like material: Synthesis and characterization

Yury M. Shulga; Victor N. Vasilets; Dmitry P. Kiryukhin; Dmitry N. Voylov; Alexei P. Sokolov

doi:10.1039/c4ra09074h

Polymer composites prepared by low-temperature post-irradiation polymerization of C₂F₄ in the presence of graphene-like material: Synthesis and characterization

Yury M. Shulga, Victor N. Vasilets, Dmitry P. Kiryukhin, Dmitry N. Voylov, Alexei P. Sokolov

Soft Materials and Membranes

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Abstract

Polymer polytetrafluoroethylene (PTFE)-microwave exfoliated graphene oxide (MEGO) composites containing up to 80 wt% PTFE were prepared by low-temperature post-irradiation polymerization of C₂F₄ in the presence of the graphene-like material. Composites were characterized by FTIR, NMR, XPS, SEM, TGA, XRD, broadband dielectric spectroscopy and DSC techniques. The melting point of PTFE in the composite (332.5°C) was higher than that of pure PTFE by 8.8°C. The measured values of the melting enthalpy (ΔH_m = 51.5 and 45.4 J g^-1) were used to calculate the extent of crystallinity in the PTFE and PTFE-MEGO composite (0.63 and 0.55, respectively). No CF₃ end groups typical of commercial PTFE have been detected in the PTFE-MEGO composites.

Original language	English
Pages (from-to)	9865-9874
Number of pages	10
Journal	RSC Advances
Volume	5
Issue number	13
DOIs	https://doi.org/10.1039/c4ra09074h
State	Published - 2015

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title = "Polymer composites prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of graphene-like material: Synthesis and characterization",

abstract = "Polymer polytetrafluoroethylene (PTFE)-microwave exfoliated graphene oxide (MEGO) composites containing up to 80 wt% PTFE were prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of the graphene-like material. Composites were characterized by FTIR, NMR, XPS, SEM, TGA, XRD, broadband dielectric spectroscopy and DSC techniques. The melting point of PTFE in the composite (332.5°C) was higher than that of pure PTFE by 8.8°C. The measured values of the melting enthalpy (ΔHm = 51.5 and 45.4 J g-1) were used to calculate the extent of crystallinity in the PTFE and PTFE-MEGO composite (0.63 and 0.55, respectively). No CF3 end groups typical of commercial PTFE have been detected in the PTFE-MEGO composites.",

author = "Shulga, {Yury M.} and Vasilets, {Victor N.} and Kiryukhin, {Dmitry P.} and Voylov, {Dmitry N.} and Sokolov, {Alexei P.}",

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doi = "10.1039/c4ra09074h",

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T1 - Polymer composites prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of graphene-like material

T2 - Synthesis and characterization

AU - Shulga, Yury M.

AU - Vasilets, Victor N.

AU - Kiryukhin, Dmitry P.

AU - Voylov, Dmitry N.

AU - Sokolov, Alexei P.

PY - 2015

Y1 - 2015

N2 - Polymer polytetrafluoroethylene (PTFE)-microwave exfoliated graphene oxide (MEGO) composites containing up to 80 wt% PTFE were prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of the graphene-like material. Composites were characterized by FTIR, NMR, XPS, SEM, TGA, XRD, broadband dielectric spectroscopy and DSC techniques. The melting point of PTFE in the composite (332.5°C) was higher than that of pure PTFE by 8.8°C. The measured values of the melting enthalpy (ΔHm = 51.5 and 45.4 J g-1) were used to calculate the extent of crystallinity in the PTFE and PTFE-MEGO composite (0.63 and 0.55, respectively). No CF3 end groups typical of commercial PTFE have been detected in the PTFE-MEGO composites.

AB - Polymer polytetrafluoroethylene (PTFE)-microwave exfoliated graphene oxide (MEGO) composites containing up to 80 wt% PTFE were prepared by low-temperature post-irradiation polymerization of C2F4 in the presence of the graphene-like material. Composites were characterized by FTIR, NMR, XPS, SEM, TGA, XRD, broadband dielectric spectroscopy and DSC techniques. The melting point of PTFE in the composite (332.5°C) was higher than that of pure PTFE by 8.8°C. The measured values of the melting enthalpy (ΔHm = 51.5 and 45.4 J g-1) were used to calculate the extent of crystallinity in the PTFE and PTFE-MEGO composite (0.63 and 0.55, respectively). No CF3 end groups typical of commercial PTFE have been detected in the PTFE-MEGO composites.

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DO - 10.1039/c4ra09074h

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Polymer composites prepared by low-temperature post-irradiation polymerization of C₂F₄ in the presence of graphene-like material: Synthesis and characterization

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