APPLICATION OF SIZE-EXCLUSION CHROMATOGRAPHY TO THE STRUCTURAL STUDY OF POLYORGANOMETALLOSILOXANESстатья
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Дата последнего поиска статьи во внешних источниках: 24 октября 2016 г.
Аннотация:Size exclusion chromatography was employed to elucidate the structure of the organosiloxane moiety in trimethylsiloxy derivatives of organometallosiloxanes containing Na, K, Ni, Mn, Cu, and Fe. An efficient technique of trimethylsilylation of organometallosiloxanes was developed to minimize alterations in their structure. The TMS derivatives of organometallosiloxanes were found to exist mostly as a more or less polydisperse mixture of cyclic poly[phenyltrimethylsiloxy siloxane]s. The preferred size of the cycles depends primarily on the nature of the metal in organometallosiloxane.