Towards identifying the new structures formed on the γ-radiolysis of Ultem

Brereton, Ian, Devasahayam, Sheila, Hill, David J. T. and Whittaker, Andrew K. (2004) Towards identifying the new structures formed on the γ-radiolysis of Ultem. Radiation Physics And Chemistry, 69 1: 65-77. doi:10.1016/S0969-806X(03)00350-5


Author Brereton, Ian
Devasahayam, Sheila
Hill, David J. T.
Whittaker, Andrew K.
Title Towards identifying the new structures formed on the γ-radiolysis of Ultem
Journal name Radiation Physics And Chemistry   Check publisher's open access policy
ISSN 0969-806X
Publication date 2004-01
Year available 2004
Sub-type Article (original research)
DOI 10.1016/S0969-806X(03)00350-5
Volume 69
Issue 1
Start page 65
End page 77
Total pages 13
Editor A. Miller
D.A. Bradley
L. Wojnarovits
Place of publication Oxford
Publisher Pergamon Press
Collection year 2004
Language eng
Subject C1
250403 Electroanalytical Chemistry
670705 Plastic products (incl. construction materials)
Abstract Ultem irradiated up to 10.0 MGy has been analysed using C-13, H-1 and D-2 proton-carbon and proton-proton correlation NMR spectroscopy to shed light on the formation of new structures. Chemical shifts and correlation data were used to determine the structure or partial structures of several new components. The spectra indicated the presence of new groups and structures involving the isopropylidene group, the imide ring, and hydrogen-abstraction reactions. Possible pathways for formation of the new structures are proposed and the G-values for their formation have been estimated. (C) 2003 Elsevier Science Ltd. All rights reserved.
Keyword Nuclear Science & Technology
Physics, Atomic, Molecular & Chemical
Ultem
Gamma-radiolysis
Nmr
Partial Structures
Radiation-chemistry
Spectroscopy
Polyetherimides
Polycarbonate
Sensitivity
Bisphenol
Esr
Chemistry, Physical
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 03:50:02 EST