Effect of PTFE irradiation above the melting point on ITS porosity |
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Authors: | Sergei A Khatipov Sergei P KabanovElena M Konova Sergei A IvanovSergei A Serov |
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Institution: | Karpov Institute of Physical Chemistry, Vorontsovo Pole street 10, Moscow 105064, Russia |
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Abstract: | XRD crystallinity and density of PTFE produced by suspension polymerization were investigated after its irradiation above the melting point as a function of absorbed dose. Comparison of behavior of these two parameters with adsorbed dose revealed that original PTFE is highly porous, the irradiation decreasing substantially its porosity. A qualitative model of pore shrinking in PTFE during irradiation above the melting point was proposed, considering a viscous flow produced by surface tension. |
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Keywords: | Polytetrafluoroethylene Radiation modification Crystallinity Density Porosity Surface tension |
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