Application of proton beams to radiation-induced graft polymerization for making amidoxime-type adsorbents
MeV proton beams have been successfully applied as ionizing radiation to induce graft polymerization of acrylonitrile to prepare amidoxime-type adsorbents on polyethylene film substrates. Dependence of degree of grafting (DG) on the pre-irradiation proton energy, beam current and fluence has been ex...
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Published in: | Radiation physics and chemistry (Oxford, England : 1993) Vol. 69; no. 2; pp. 171 - 178 |
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Main Authors: | , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Elsevier Ltd
01-02-2004
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Subjects: | |
Online Access: | Get full text |
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Summary: | MeV proton beams have been successfully applied as ionizing radiation to induce graft polymerization of acrylonitrile to prepare amidoxime-type adsorbents on polyethylene film substrates. Dependence of degree of grafting (DG) on the pre-irradiation proton energy, beam current and fluence has been examined with use of FTIR absorption measurements and RBS. The DG is observed to be proportional to the deposited energy, and saturate at a fluence of the order of 10
13
cm
−2 which is more than one order of magnitude smaller than the saturation fluence for molecular hydrogen release from the substrate. It is shown that graft polymerization could be possible deep into a substrate with thickness of hundreds of μm, indicating a possibility to control distribution of functional groups with a spatial variation of the order of a micron. |
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ISSN: | 0969-806X 1879-0895 |
DOI: | 10.1016/S0969-806X(03)00439-0 |