An ESCA investigation of low energy electron beam interactions with polymers: II. PVDF and a mechanistic comparison between PTFE and PVDF

An ESCA investigation of low energy electron beam interactions with polymers: II. PVDF and a mechanistic comparison between PTFE and PVDF

Poly(vinylidene fluoride) (PVDF) has been irradiated by low energy (< 2 keV) electrons and the changes in structure and bonding monitored by ESCA. Defluorination is found to occur, ultimately leading to an unsaturated crosslinked, partially fluorinated carbonaceous network. For 2 keV electron bom...

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Veröffentlicht in:Journal of electron spectroscopy and related phenomena 1988, Vol.47, p.93-104
Hauptverfasser: Clark, D.T., Brennan, W.J.
Format: Artikel
Sprache:eng
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Applied sciences
Exact sciences and technology
Physicochemistry of polymers
Polymers and radiations
Properties and characterization
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container_title Journal of electron spectroscopy and related phenomena
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creator Clark, D.T.
Brennan, W.J.
description Poly(vinylidene fluoride) (PVDF) has been irradiated by low energy (< 2 keV) electrons and the changes in structure and bonding monitored by ESCA. Defluorination is found to occur, ultimately leading to an unsaturated crosslinked, partially fluorinated carbonaceous network. For 2 keV electron bombardment the changes are found to be vertically homogeneous when studied using Mg Kα 1,2 ESCA analysis but a comparison with Ti Kα 1,2 excited spectra reveals a depth heterogeneity. The effect of electron energy is also only revealed by the use of Ti Kα 1,2 X-ray excited ESCA analysis. The results obtained are compared with a previous study on electron beam effects on PTFE. The differences between the two systems are seen to be explained by the ability of PVDF to form HF as a route to defluorination.
doi_str_mv 10.1016/0368-2048(88)85006-0
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subjects Applied sciences
Exact sciences and technology
Physicochemistry of polymers
Polymers and radiations
Properties and characterization
title An ESCA investigation of low energy electron beam interactions with polymers: II. PVDF and a mechanistic comparison between PTFE and PVDF
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