On the mechanism of stretching and breaking of polymers in elongational flows

Yitzhak Rabin

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5 Scopus citations

Abstract

We show that some of the experimental results on the stretching and fracture of isolated polymers in elongational flows do not agree with existing theoretical predictions. We suggest that the difficulties stem from the assumption of an abrupt transition from a uniformly deformed coil to a fully stretched state of the polymer and that the experimental observations support a recently proposed model according to which the stretching proceeds continuously through a non-uniform state of the deformed macromolecule that consists of a strongly stretched central segment and weakly perturbed coiled ends. Further experimental tests of the above model are proposed.

Original languageEnglish
Pages (from-to)119-123
Number of pages5
JournalJournal of Non-Newtonian Fluid Mechanics
Volume30
Issue number2-3
DOIs
StatePublished - 1988
Externally publishedYes

Bibliographical note

Funding Information:
Helpful conversationsa nd written correspondencew ith E.W. Merrill, T.Q. Nguyen and G. Ryskin are gratefully acknowledgedT. his work was supportedb y grants from the Bat-Shevad e Rothschild Foundation and from DARPA (throught he La Jolla Institute).

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