SOLID STATE NMR STUDIES OF BLEND MORPHOLOGY AND AGEING PROCESSES

Authors
  1. Axelson, D.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);NMR Technologies Inc, Edmonton ALTA (CAN)
Abstract
A series of eight carbon black filled bromobutyl rubber samples were prepared and allowed to age under ambient conditons for five months. Carbon-13 (C-13) nuclear magnetic resonance (NMR) spectroscopy analyses and concomitant physical testing allowed comparisons to be made in that time span. NMR chemical shift analysis provided direct observation of the nature and extent of oxidation in the solid samples studied. Correlations among the C-13 NMR relaxation times (T. and T.) and the mechanical properties measured were also demonstrated. Thus, C-13 solid state NMR measurements provided unambiguous quantitative and qualitative measures of ageing of the rubber samples studies over a short period of time.
Report Number
DREO/PSD/CPS-01/90 — Contractor Report (Final)
Date of publication
15 Jan 1990
Number of Pages
231
DSTKIM No
91-00476
CANDIS No
67695
Format(s):
Hardcopy;Originator's fiche received by DSIS

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