Affordable Access

Publisher Website

Negative poisson ratio in poly(tetrafluoroethylene) monitored spectroscopically

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
35
Issue
23
Identifiers
DOI: 10.1016/0032-3861(94)90676-9
Keywords
  • Poly(Tetrafluoroethylene)
  • Negative Poisson Ratio
  • Spectroscopy
Disciplines
  • Musicology
  • Physics

Abstract

Abstract Morphological changes resulting from the elongation of poly(tetrafluoroethylene) (PTFE) have been examined using rheo-photoacoustic Fourier transform infra-red (r.p.a. FTi.r.) methodology. Based on the quantitative analysis of the r.p.a. FTi.r. data, several transitions in the film permeability are identified over the range of examined elongations, and the mechanism responsible for these transitions is discussed. Electron microscopy and X-ray diffraction measurements were utilized in an attempt to further support the proposed mechanism of elongation in the negative Poisson ratio region. In contrast to polyethylene and other polymers, this phenomenon is characteristic of PTFE. The strain dichroic ratios obtained using transmission FTi.r. spectroscopy are not sensitive to these transitions.

There are no comments yet on this publication. Be the first to share your thoughts.