Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5186873 | Polymer | 2005 | 7 Pages |
Abstract
Under repeated tensile strain, many particle-filled polymers such as silica-filled polydimethylsiloxane (PDMS), exhibit a reduction in stress after the initial extension, the so-called Mullins effect, and the mechanism(s) responsible for this is considered to be a major unsolved mystery of polymer physics. We report here the first observation of the absence of this effect in cross linked, silica-filled PDMS when the second strain axis is perpendicular to the initial strain axis. This result poses a challenge for existing theories. We propose a mechanism to account for the Mullins effect that is consistent with our experimental observations.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
David E. Hanson, Marilyn Hawley, Robert Houlton, Kiran Chitanvis, Philip Rae, E. Bruce Orler, Debra A. Wrobleski,