Effect of graphene content on thermal degradation of PTFE | Zendy

A.D. Pienaar | Zendy; Louis Johann van Rooyen | Zendy; Hertzog Bissett | Zendy; J. KargerKocsis | Zendy

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Effect of graphene content on thermal degradation of PTFE

Author(s) -

A.D. Pienaar,

Louis Johann van Rooyen,

Hertzog Bissett,

J. KargerKocsis

Publication year - 2017

Publication title -

brazilian journal of thermal analysis

Language(s) - English

Resource type - Journals

ISSN - 2316-9842

DOI - 10.18362/bjta.v6.i2.12

Subject(s) - graphene , materials science , degradation (telecommunications) , composite material , thermal , nanotechnology , thermodynamics , electronic engineering , physics , engineering

In this work we report on the effect of graphene nanoplatelet inclusion on the thermal degradation of polytetrafuoroethylene (PTFE) in nitrogen. PTFE/graphene nanocomposites, containing up to 4 vol% graphene were produced by solution-assisted blending followed by sintering. Decomposition parameters were determined by direct fitting of the Sestak-Berggren equation to the experimental data. It was found that the activation energy of thermal decomposition increased up to as much as 20% and was practically independent of the graphene content in the studied PTFE/graphene nanocomposites. This was attributed to the tortuosity of the graphene layers hampering the diffusion of the gaseous decomposition products.

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