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FE-NMR analysis of silane hydrogen, phenyl, and vinyl content of several siloxane pre-polymer materials
1979
Abstract
The vinyl contents of siloxane pre-polymer materials were determined by proton FT-NMR. It was determined that the presence of silane hydrogen in these pre-polymers compromises and in some cases negates vinyl content data reported by use of the iodine monochloride procedure. The active hydrogen species reacts with ICl and produces high iodine numbers, even if no vinyl is present. Siloxane aromatic compounds have also been detected by proton FT-NMR, and they also function as an interfering species and produce high iodine numbers by the ICl procedure.
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