STRESS-STRAIN BEHAVIOR OF RANDOMLY CROSSLINKED POLYDIMETHYLSILOXANE NETWORKS.

M. Gottlieb, C. W. Macosko, T. C. Lepsch

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

In the reported research program, the stress-strain behavior of randomly crosslinked polydimethylsiloxane (PDMS) networks was studied. The small-strain data obtained agreed well with available data on radiation-crosslinked PDMS networks. It was found that both the suppression of junction fluctuation and trapped entanglements have to be considered in order to account for the discrepancy between experimental data and the phantom-network theory. With the addition of a constant trapped entanglement term, Flory's recent network model describes correctly the behavior of our networks under tension and compression. The values of the parameters used in fitting the data are within the range suggested by Flory for typical rubber networks. Edwards' ″potential pipe″ theory did not correlate experimental data over the entire range of strain variation.

Original languageEnglish (US)
Pages (from-to)1603-1617
Number of pages15
JournalJournal of polymer science. Part A-2, Polymer physics
Volume19
Issue number10
StatePublished - Jan 1 1981

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