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 language | English (US) |
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Pages (from-to) | 153-156 |
Number of pages | 4 |
Journal | American Chemical Society, Polymer Preprints, Division of Polymer Chemistry |
Volume | 20 |
Issue number | 2 |
State | Published - Jan 1 1979 |
Event | Pap presented at a Meet, Symp on Branched Polym - Washington, DC, USA Duration: Sep 10 1979 → Sep 14 1979 |