RHEOLOGY OF BRANCHED POLYDIMETHYLSILOXANES.

F. M. Valles, Chris Macosko, W. J. Hickey

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

Randomly branched molecules, rather than regular stars, are the type which occur in most commercial polymerizations. However their structure is difficult to determine. By step-reaction polymerization a randomly branched system of known structure can be obtained using a polyfunctional comonomer. In this work the authors have studied the viscosity rise during polymerization of a well defined system composed of long molecules of bifunctional polydimethylsiloxane with reactive groups at their ends and small trifunctional and tetrafunctional molecules. Experimental data are tabulated, plotted and summarized.

Original languageEnglish (US)
Pages (from-to)153-156
Number of pages4
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume20
Issue number2
StatePublished - Jan 1 1979
EventPap presented at a Meet, Symp on Branched Polym - Washington, DC, USA
Duration: Sep 10 1979Sep 14 1979

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