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On-line and post irradiation analysis of swift heavy ion induced modification of PMMA (polymethyl-methacrylate)

Hossain, Umme Habiba and Lima, Vincent and Baake, Olaf and Severin, Daniel and Bender, M. and Ensinger, Wolfgang (2014):
On-line and post irradiation analysis of swift heavy ion induced modification of PMMA (polymethyl-methacrylate).
326, In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, pp. 135-139, [Online-Edition: http://www.sciencedirect.com/science/article/pii/S0168583X14...],
[Article]

Abstract

The present work is part of a research program studying the swift heavy ion induced modification of aliphatic polymers with some comparable side groups, here polymethyl-methacrylate (PMMA). This paper presents a study on Fourier-transform-infrared spectroscopy (FTIR), residual gas analysis (RGA), and Ultraviolet-Visible (UV-Vis) spectroscopy of the transformations of a PMMA film under gold (Au) and uranium (U) ion irradiation in the MeV/u range in vacuum to fluences up to 3 x 1011 ions per cm2. The results show a general ion induced degradation of the polymer, with release of volatile fragments, scission of side chains and polymeric backbone, formation of conjugated double bonds, and the resulting increased absorption of the UV part in the UV-Vis spectral region. A molecular scission mechanism which explains the main degradation products is proposed.

Item Type: Article
Erschienen: 2014
Creators: Hossain, Umme Habiba and Lima, Vincent and Baake, Olaf and Severin, Daniel and Bender, M. and Ensinger, Wolfgang
Title: On-line and post irradiation analysis of swift heavy ion induced modification of PMMA (polymethyl-methacrylate)
Language: English
Abstract:

The present work is part of a research program studying the swift heavy ion induced modification of aliphatic polymers with some comparable side groups, here polymethyl-methacrylate (PMMA). This paper presents a study on Fourier-transform-infrared spectroscopy (FTIR), residual gas analysis (RGA), and Ultraviolet-Visible (UV-Vis) spectroscopy of the transformations of a PMMA film under gold (Au) and uranium (U) ion irradiation in the MeV/u range in vacuum to fluences up to 3 x 1011 ions per cm2. The results show a general ion induced degradation of the polymer, with release of volatile fragments, scission of side chains and polymeric backbone, formation of conjugated double bonds, and the resulting increased absorption of the UV part in the UV-Vis spectral region. A molecular scission mechanism which explains the main degradation products is proposed.

Journal or Publication Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Series Name: 17th International Conference on Radiation Effects in Insulators (REI)
Volume: 326
Uncontrolled Keywords: PMMA polymer, Polymer degradation, Radiation damage
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences
Date Deposited: 22 Apr 2014 14:37
Official URL: http://www.sciencedirect.com/science/article/pii/S0168583X14...
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